DMSC Integration Testing

Test: nexusfiles-scipp|odin|odin_validate_exposure_time|orca

2026-02-03 00:18:05: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00017191.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:361: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:370: KeyError

2026-02-02 00:16:57: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00017044.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:361: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:370: KeyError

2026-02-01 00:18:10: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00016904.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:361: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:370: KeyError

2026-01-31 00:17:18: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00016764.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:361: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:370: KeyError

2026-01-30 00:17:11: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00016624.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:361: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:370: KeyError

2026-01-29 00:17:33: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00016484.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:361: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:370: KeyError

2026-01-28 00:17:16: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00016337.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:361: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:370: KeyError

2026-01-27 00:17:30: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00016197.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:361: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:370: KeyError

2026-01-26 00:16:43: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00016057.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:361: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:370: KeyError

2026-01-25 00:18:29: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00015917.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:361: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:370: KeyError

2026-01-24 00:16:23: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00015784.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:361: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:370: KeyError

2026-01-23 00:17:36: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00015644.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:361: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:370: KeyError

2026-01-22 00:17:08: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00015504.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:361: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:370: KeyError

2026-01-21 00:16:15: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00014865.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:361: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:367: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:370: KeyError

2026-01-20 20:45:02: failed

2026-01-20 13:56:37: failed

2026-01-20 00:16:07: failed

2026-01-19 21:58:13: failed

2026-01-19 12:25:07: failed

2026-01-19 12:22:38: failed

2026-01-19 00:16:21: failed

2026-01-18 01:43:40: failed

2026-01-17 00:16:14: failed

2026-01-16 15:07:29: failed

2026-01-16 14:40:14: failed

2026-01-16 14:33:47: failed

2026-01-16 14:28:30: failed

item =

def pytest_runtest_call(item) -> None:
coda_file = getattr(item, "_coda_file", None)
if coda_file is not None:
> item.record_property("coda_file", coda_file)
^^^^^^^^^^^^^^^^^^^^
E AttributeError: 'Function' object has no attribute 'record_property'

tests/conftest.py:17: AttributeError

System Out:

--------------------------------- Captured Log ---------------------------------

2026-01-16 14:17:54: error

request = >
_session_coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00014865.hdf')

@pytest.fixture
def coda_nexus_file_path(request, _session_coda_nexus_file_path: Path) -> Path:
> request.node.record_property(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"coda_file",
str(_session_coda_nexus_file_path),
)
E AttributeError: 'Function' object has no attribute 'record_property'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/dmsc_nightly/testing/nexusfiles/setup_fixtures.py:46: AttributeError

System Out:

--------------------------------- Captured Log ---------------------------------

2026-01-16 14:03:32: failed

2026-01-16 11:57:01: failed

2026-01-16 11:30:35: failed

2026-01-16 10:39:44: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00014865.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:356: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:365: KeyError

2026-01-16 10:36:54: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00014865.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:356: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:365: KeyError

2026-01-16 00:16:33: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00014816.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:356: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:365: KeyError

2026-01-15 16:38:16: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00014774.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:356: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:365: KeyError

2026-01-15 16:26:55: failed

2026-01-15 16:24:32: failed

2026-01-15 15:52:37: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00014767.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:356: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:365: KeyError

2026-01-14 00:17:06: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00014536.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:356: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:365: KeyError

2026-01-13 00:17:09: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00014395.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:356: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:365: KeyError

2026-01-12 00:16:45: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00014255.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:356: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:365: KeyError

2026-01-11 00:17:45: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00014115.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:356: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:365: KeyError

2026-01-10 00:16:34: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00013968.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:356: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:365: KeyError

2026-01-09 08:59:39: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00013877.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:356: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:365: KeyError

2026-01-09 00:16:53: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00013828.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:356: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:365: KeyError

2026-01-08 11:10:56: failed

coda_nexus_file_path = PosixPath('/ess/data/coda/999999/raw/coda_odin_999999_00013753.hdf')

def test_odin_validate_exposure_time__orca(coda_nexus_file_path: FilePath) -> None:
"""Test that the exposure_time dataset in the ORCA detector is valid.

We need `exposure_time` of each image frame to normalize the histogram data.
It is not part of `GenericWorkflow` so we test it manually here.
Assuming `exposure_time` is not changed during a measurement,
it should be a single value dataset.
"""
# This is a temporary path until we know where it will be placed in the NeXus file.
exposure_time_path = "/entry/instrument/histogram_mode_detectors/orca/exposure_time"
# We are using `ess.reduce.nexus.open_nexus_file` here
# due to file locking issue.
# See https://github.com/scipp/essreduce/issues/287.
with open_nexus_file(coda_nexus_file_path) as f:
> exposure_time_data: sc.Variable = f[exposure_time_path][()]
^^^^^^^^^^^^^^^^^^^^^

tests/nexusfiles-scipp/odin/odin_load_nexus_test.py:141:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:356: in __getitem__
return self.file[sel_path.relative_to('/').as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:362: in __getitem__
return self[grp][sel_path.relative_to(grp).as_posix()]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = , sel = 'exposure_time'

def __getitem__(self, sel):
"""
Get a child group or child dataset, a selection of child groups, or load and
return the current group.

Three cases are supported:

- String name: The child group or child dataset of that name is returned.
- Class such as ``NXdata`` or ``NXlog``: A dict containing all direct children
with a matching ``NX_class`` attribute are returned. Also accepts a tuple of
classes. ``Field`` selects all child fields, i.e., all datasets but not
groups.
- Scipp-style index: Load the specified slice of the current group, returning
a :class:`scipp.DataArray` or :class:`scipp.DataGroup`.

Parameters
----------
sel:
Child name, class, or index.

Returns
-------
:
Field, group, dict of fields, or loaded data.
"""
if isinstance(sel, str):
# We cannot get the child directly from the HDF5 group, since we need to
# create the parent group, to ensure that fields get the correct properties
# such as sizes and dtype.
if '/' in sel:
sel_path = PurePosixPath(sel)
if sel_path.is_absolute():
return self.file[sel_path.relative_to('/').as_posix()]
# If the path is a single name, we can directly access the child
elif len(sel_path.parts) == 1:
return self[sel_path.as_posix()]
else:
grp = sel_path.parts[0]
return self[grp][sel_path.relative_to(grp).as_posix()]
elif sel == '..':
return self.parent
> child = self._children[sel]
^^^^^^^^^^^^^^^^^^^
E KeyError: 'exposure_time'

.tox/nexusfiles-scipp-odin/lib/python3.12/site-packages/scippnexus/base.py:365: KeyError