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IDEX l1b filter for desired evt messages #2882

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Merged
lacoak21 merged 1 commit into from
Mar 30, 2026
Merged

IDEX l1b filter for desired evt messages #2882

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5 changes: 5 additions & 0 deletions imap_processing/idex/idex_l1b.py
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Original file line number Diff line number Diff line change
Expand Up @@ -200,6 +200,11 @@ def idex_l1b_msg(l1a_dataset: xr.Dataset) -> xr.Dataset:
name="science_on",
attrs=idex_attrs.get_variable_attributes("science_on"),
)

# Filter dataset to only include rows where there is an event
# (either science or pulser)
null_event = (pulser_on == 255) & (science_on == 255)
l1b_dataset = l1b_dataset.isel(epoch=~null_event)
logger.info("IDEX L1B MSG data processing completed.")
return l1b_dataset

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14 changes: 7 additions & 7 deletions imap_processing/tests/idex/test_idex_l1b.py
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Expand Up @@ -392,14 +392,14 @@ def test_l1b_msg_processing(decom_test_data_msg: xr.Dataset):

# Check that the pulser_on variable is correct
expected_pulser_on = np.ones_like(test_l1b_msg["pulser_on"]) * 255
# The pulser_on variable should be 1 for the 2nd and 0 for the 3rd event, and
# The pulser_on variable should be 1 for the 1st and 0 for the 2nd event, and
# 255 for all other events
expected_pulser_on[2] = 1
expected_pulser_on[3] = 0
np.testing.assert_array_equal(test_l1b_msg["pulser_on"].data, expected_pulser_on)
expected_pulser_on[0] = 1
expected_pulser_on[1] = 0
# Check that the science_on variable is correct
expected_science_on = np.ones_like(test_l1b_msg["pulser_on"]) * 255
# The science_on variable should be 1 for the 10th event and 0 for the 11th event
expected_science_on[10] = 1
expected_science_on[11] = 0
# The science_on variable should be 1 for the 3rd event and 0 for the 4th event
expected_science_on[2] = 1
expected_science_on[3] = 0
np.testing.assert_array_equal(test_l1b_msg["pulser_on"].data, expected_pulser_on)
np.testing.assert_array_equal(test_l1b_msg["science_on"].data, expected_science_on)
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