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  1. Instrument control development
  2. INSTRM-2571

Could you pelease clear CCD exposure when IERS failure happens

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    • Type: Task
    • Status: Open (View Workflow)
    • Priority: Normal
    • Resolution: Unresolved
    • Component/s: None
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      Description

      On 31 May IERS failure occurred.
      The next exposure also failed for CCDs because they already were in reading status. The exposure was not cleared after the first failure. It is helpful if CCDs terminate the exposure when it failed.

      Here is a log of ccd_b1 (the same should be seen in the other CCDs)

      2025-06-01 03:56:40.763Z astropy 30 logger.py:235 failed to download https://datacenter.iers.org/data/9/finals2000A.all and https://maia.usno.navy.mil/ser7/finals2000A.all: <urlopen error Unable to open any source! Exceptions were {'https://datacenter.iers.org/data/9/finals2000A.all': URLError(gaierror(-2, 'Name or service not known')), 'https://maia.usno.navy.mil/ser7/finals2000A.all': URLError(gaierror(-2, 'Name or service not known'))}>.
      A coordinate or time-related calculation might be compromised or fail because the dates are not covered by the available IERS file. See the "IERS data access" section of the astropy documentation for additional information on working offline.
      2025-06-01 03:56:40.800Z cmds 20 CommandLink.py:122 > 2 1644 f text="command failed: ValueError('interpolating from IERS_Auto using predictive values that are more\\nthan 30.0 days old.\\n\\nNormally you should not see this error because this class\\nautomatically downloads the latest IERS-A table. Perhaps you are\\noffline? If you understand what you are doing then this error can be\\nsuppressed by setting the auto_max_age configuration variable to\\n``None``:\\n\\n from astropy.utils.iers import conf\\n conf.auto_max_age = None\\n') in _check_interpolate_indices() at /software/condaRoot/envs/rubin8-ics/lib/python3.11/site-packages/astropy/utils/iers/iers.py:840"
      2025-06-01 03:58:02.577Z cmds 20 Actor.py:524 new cmd: wipe
      2025-06-01 03:58:02.582Z cmds 20 CommandLink.py:122 > 2 1645 f text="command failed: ExposureIsActive('an exposure is already active: Exposure(imtype=test, expTime=10.001, startedAt=1748750134.4181333)') in _setExposure() at /software/mhs/products/Linux64/ics_ccdActor/1.10.2/python/ccdActor/Commands/CcdCmd.py:137"
      2025-06-01 03:58:02.592Z cmds 20 Actor.py:524 new cmd: clearExposure
      2025-06-01 03:58:02.592Z cmds 20 CommandLink.py:122 > 2 1646 w text="clearing running/broken exposure: Exposure(imtype=test, expTime=10.001, startedAt=1748750134.4181333)"
      2025-06-01 03:58:02.593Z cmds 20 CommandLink.py:122 > 0 0 w text="stopping a non-idle exposure: Exposure(imtype=test, expTime=10.001, startedAt=1748750134.4181333)"

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              • Assignee:
                cloomis cloomis
                Reporter:
                yuki.moritani yuki.moritani
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                • Created:
                  Updated: