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  1. Data Management
  2. DM-3801

The gains in obs_test's amplifier table appear to be incorrect

    Details

    • Type: Bug
    • Status: Invalid
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: obs_test
    • Labels:
      None
    • Templates:
    • Story Points:
      4
    • Sprint:
      Science Pipelines DM-W16-1, Science Pipelines DM-W16-2
    • Team:
      Alert Production

      Description

      As of DM-3792 the gains in obs_test's camera's amplifier table were set to the values reported in the headers of the lsstSim raw data used to generate obs_test's raw data. (Before that one nominal gain was used for all amplifiers).

      However, Robert Lupton reports that these gains are incorrect. He measured the following gains by scaling the nominal gains by the median values in the bias-subtracted data:

      amp   meas      curr
      name  gain      gain
      00    1.7741    1.7741
      01    1.8998    1.65881
      10    1.8130    1.74151
      11    1.8903    1.67073
      

      We could simply adopt these values, but I would like to understand why the gains are so far off from those reported by phoSim in the raw data.

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              • Assignee:
                krughoff Simon Krughoff
                Reporter:
                rowen Russell Owen
                Watchers:
                Paul Price, Robert Lupton, Russell Owen
              • Votes:
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                Dates

                • Created:
                  Updated:
                  Resolved:

                  Summary Panel