DMSC Integration Testing

Test: nexusfiles-scipp|odin|odin_read_detector_everything|orca

2025-09-15 00:16:36: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00084402.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-09-14 00:16:23: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00084262.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-09-13 00:16:33: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00084129.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00084129.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-09-12 00:16:26: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00083993.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-09-11 00:16:05: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00083867.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-09-10 00:16:32: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00083741.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-09-09 00:16:30: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00083608.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-09-08 00:16:00: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00083475.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-09-07 00:16:17: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00083342.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-09-06 00:16:23: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00083216.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00083216.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-09-05 00:16:13: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00083083.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00083083.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-09-04 00:16:17: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00082957.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-09-03 00:16:16: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00082824.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/999999/raw/999999_00082824.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-09-02 00:27:28: error

instrument = 'odin', coda_proposal_id = '977695'
pathfinder = . at 0x7ffa8e65b100>

@pytest.fixture(scope="session")
def coda_nexus_file_path(
instrument: str, coda_proposal_id: str, pathfinder: Callable[..., Path]
) -> Path:
> return pathfinder(proposal_id=coda_proposal_id, instrument=instrument)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dmsc_nightly/testing/nexusfiles/setup_fixtures.py:46:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dmsc_nightly/testing/nexusfiles/setup_fixtures.py:34: in
"manual": lambda *args, **kwargs: coda.get_latest_nexus_paths(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

instrument = 'ODIN', proposal_id = '977695', n = 1, inspect = 20

def get_latest_nexus_paths(
instrument: str, proposal_id: str | None, n: int = 1, inspect: int = 20
) -> list[Path]:
"""
Get the latest file paths manually by sorting the files in the directory.

Parameters
----------
instrument:
The instrument name.
proposal_id:
SciCat proposal ID for CODA.
If ``None``, the environment variable ``OVERRIDE_RAW_DATA_DIR`` must be set.
n:
The number of files to return.
inspect:
The number of files to inspect before returning.

Returns
-------
:
Paths to the n latest files for the given instrument and proposal.
"""
instrument = NEXUS_INSTRUMENT_NAME[instrument]
path = _coda_raw_data_path(proposal_id)
files_found = []
logging.info(
"Scanning the %d latest files in %s for instrument %s",
inspect,
path,
instrument,
)
recent_files = sorted(path.glob("*.hdf"))[-inspect::][::-1]
logging.info("Recent files: %s", recent_files)
for file in recent_files:
logging.info("Inspecting file: %s", file)
try:
with snx.File(file, "r", locking=False) as f:
instrument_in_file = f["/entry/instrument/name"][()]
if instrument_in_file == instrument:
logging.info(
"File %s matches requested instrument %s. Adding to list. "
"Last modified: %s",
file,
instrument,
datetime.fromtimestamp(
os.stat(file).st_mtime, tz=local_timezone()
),
)
files_found.append(file)
if len(files_found) == n:
logging.info("Found %d files. Returning.", n)
return files_found
else:
logging.info(
"File instrument is %s, but %s was requested. Skipping.",
instrument_in_file,
instrument,
)
except OSError as e:
logging.warning(
"File %s could not be opened. Reason: %s",
file,
e,
)
continue
logging.error("No files found for instrument %s", instrument)
> raise RuntimeError(f"No files found for instrument {instrument}")
E RuntimeError: No files found for instrument ODIN

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dmsc_nightly/nexusfiles/coda.py:94: RuntimeError

2025-09-01 00:25:43: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00082355.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-31 00:27:13: failed

2025-08-30 00:18:52: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00082295.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-29 00:21:14: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00082169.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00082169.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-08-28 00:23:17: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00082043.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-27 00:22:25: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00081911.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00081911.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-08-25 00:20:26: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00081641.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-24 00:30:26: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00081521.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00081521.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-08-23 00:20:54: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00081401.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-22 00:18:54: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00081263.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00081263.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-08-21 00:18:08: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00081131.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-20 00:18:13: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00081005.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00081005.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-08-19 00:18:00: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00080879.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-18 00:18:34: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00080741.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00080741.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-08-17 00:18:18: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00080603.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-16 00:26:27: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00080453.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00080453.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-08-15 00:19:56: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00080315.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:549: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:353: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:258: in execute_task
result = task(data)
^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:759: in __call__
return self.func(*new_argspec)
^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:80: in apply
return func(*args)
^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00080315.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-08-14 00:24:30: error

instrument = 'odin', coda_proposal_id = '977695'
pathfinder = . at 0x7f8aa6f353a0>

@pytest.fixture(scope="session")
def coda_nexus_file_path(
instrument: str, coda_proposal_id: str, pathfinder: Callable[..., Path]
) -> Path:
> return pathfinder(proposal_id=coda_proposal_id, instrument=instrument)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dmsc_nightly/testing/nexusfiles/setup_fixtures.py:46:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dmsc_nightly/testing/nexusfiles/setup_fixtures.py:34: in
"manual": lambda *args, **kwargs: coda.get_latest_nexus_paths(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

instrument = 'ODIN', proposal_id = '977695', n = 1, inspect = 20

def get_latest_nexus_paths(
instrument: str, proposal_id: str | None, n: int = 1, inspect: int = 20
) -> list[Path]:
"""
Get the latest file paths manually by sorting the files in the directory.

Parameters
----------
instrument:
The instrument name.
proposal_id:
SciCat proposal ID for CODA.
If ``None``, the environment variable ``OVERRIDE_RAW_DATA_DIR`` must be set.
n:
The number of files to return.
inspect:
The number of files to inspect before returning.

Returns
-------
:
Paths to the n latest files for the given instrument and proposal.
"""
instrument = NEXUS_INSTRUMENT_NAME[instrument]
path = _coda_raw_data_path(proposal_id)
files_found = []
logging.info(
"Scanning the %d latest files in %s for instrument %s",
inspect,
path,
instrument,
)
recent_files = sorted(path.glob("*.hdf"))[-inspect::][::-1]
logging.info("Recent files: %s", recent_files)
for file in recent_files:
logging.info("Inspecting file: %s", file)
try:
with snx.File(file, "r", locking=False) as f:
instrument_in_file = f["/entry/instrument/name"][()]
if instrument_in_file == instrument:
logging.info(
"File %s matches requested instrument %s. Adding to list. "
"Last modified: %s",
file,
instrument,
datetime.fromtimestamp(
os.stat(file).st_mtime, tz=local_timezone()
),
)
files_found.append(file)
if len(files_found) == n:
logging.info("Found %d files. Returning.", n)
return files_found
else:
logging.info(
"File instrument is %s, but %s was requested. Skipping.",
instrument_in_file,
instrument,
)
except OSError as e:
logging.warning(
"File %s could not be opened. Reason: %s",
file,
e,
)
continue
logging.error("No files found for instrument %s", instrument)
> raise RuntimeError(f"No files found for instrument {instrument}")
E RuntimeError: No files found for instrument ODIN

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dmsc_nightly/nexusfiles/coda.py:94: RuntimeError

2025-08-13 00:19:44: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00080039.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-12 00:17:32: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00079885.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-11 00:17:56: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00079759.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-10 00:18:15: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00079605.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-09 00:20:12: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00079472.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00079472.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-08-08 00:18:09: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00079332.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:191: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-07 00:22:23: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00079199.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:182: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-06 00:18:04: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00079059.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:182: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-05 00:18:04: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00078919.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:182: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00078919.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-08-04 00:38:02: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00078779.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:182: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-03 00:17:50: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00078625.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:182: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-02 00:18:17: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00078478.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:182: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-08-01 00:18:04: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00078338.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:182: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00078338.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-07-31 00:18:04: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00078205.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:182: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-07-30 00:17:37: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00077894.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:182: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:230: in load_nexus_component
nexus.load_component(location, nx_class=nx_class, definitions=definitions)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:58: in load_component
loaded = cast(sc.DataGroup, component[selection])
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:378: in __getitem__
dg = self._nexus.read_children(sel)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:265: in _nexus
self._populate_fields()
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:280: in _populate_fields
self._lazy_nexus = self._definitions.get(self.attrs.get('NX_class'), NXobject)(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self =
attrs = mappingproxy()
children = {'current': , 'data': , 'depends_on': , 'description': , ...}

def __init__(
self, attrs: dict[str, Any], children: dict[str, snx.Field | snx.Group]
):
children = _drop(children, (snx.NXoff_geometry, snx.NXevent_data))
> children['data'] = children['detector_number']
E KeyError: 'detector_number'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:556: KeyError

2025-07-29 00:17:30: failed

workflow =
coda_nexus_file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00076949.hdf')
check_everything_histogram =

def test_odin_read_detector_everything__orca(
workflow: sciline.Pipeline,
coda_nexus_file_path: Path,
check_everything_histogram: Callable,
) -> None:
workflow[Filename[SampleRun]] = coda_nexus_file_path
workflow[NeXusDetectorName] = "histogram_mode_detectors/orca"

> result = workflow.compute(DetectorData[SampleRun])

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:118:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/pipeline.py:182: in compute
return self.get(tp, **kwargs).compute(reporter=reporter)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/task_graph.py:122: in compute
return self._scheduler.get(self._graph, [targets], reporter=reporter)[0]
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/sciline/scheduler.py:119: in get
return self._dask_get(dsk, list(map(_to_dask_key, keys)))
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/threaded.py:91: in get
results = get_async(
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:516: in get_async
raise_exception(exc, tb)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:324: in reraise
raise exc
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/local.py:229: in execute_task
result = task(data)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/_task_spec.py:741: in __call__
return self.func(*new_argspec)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dask/utils.py:79: in apply
return func(*args)
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/workflow.py:267: in load_nexus_data
nexus.load_data(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

file_path = PosixPath('/ess/data/coda/2025/977695/raw/977695_00076949.hdf')
selection = slice(None, None, None)

def load_data(
file_path: FilePath | NeXusFile | NeXusGroup,
selection: snx.typing.ScippIndex | slice = (),
*,
entry_name: NeXusEntryName | None = None,
component_name: str,
definitions: Mapping | NoNewDefinitionsType = NoNewDefinitions,
) -> sc.DataArray:
"""Load data of a detector or monitor from a NeXus file.

Loads either event data from an ``NXevent_data`` group or histogram
data from an ``NXdata`` group depending on which ``group`` contains.
Event data is grouped by ``'event_time_zero'`` as in the NeXus file.
Histogram data is returned as encoded in the file.

Parameters
----------
file_path:
Indicates where to load data from.
One of:

- Path to a NeXus file on disk.
- File handle or buffer for reading binary data.
- A ScippNexus group of the root of a NeXus file.
selection:
Select which aprt of the data to load.
By default, load all data.
Supports anything that ScippNexus supports.
component_name:
Name of the NXdetector or NXmonitor containing the NXevent_data to load.
Must be a group in an instrument group in the entry (see below).
entry_name:
Name of the entry that contains the detector.
If ``None``, the entry will be located based
on its NeXus class, but there cannot be more than 1.
definitions:
Definitions used by scippnexus loader, see :py:`scippnexus.File`
for documentation.

Returns
-------
:
Data array with events or a histogram.
"""
with open_nexus_file(file_path, definitions=definitions) as f:
entry = _unique_child_group(f, snx.NXentry, entry_name)
instrument = _unique_child_group(entry, snx.NXinstrument, None)
component = instrument[component_name]
if _contains_nx_class(component, snx.NXevent_data):
data = _unique_child_group(component, snx.NXevent_data, None)
sel = _to_snx_selection(selection, for_events=True)
elif _contains_nx_class(component, snx.NXdata):
data = _unique_child_group(component, snx.NXdata, None)
sel = _to_snx_selection(selection, for_events=False)
else:
> raise ValueError(
f"NeXus group '{component.name}' contains neither "
"NXevent_data nor NXdata."
)
E ValueError: NeXus group '/entry/instrument/histogram_mode_detectors/orca' contains neither NXevent_data nor NXdata.

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/ess/reduce/nexus/_nexus_loader.py:371: ValueError

2025-07-28 00:17:25: failed