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  1. Data Management
  2. DM-3821

Recent CModel bugfixes from HSC

    Details

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

      Description

      I've just fixed two rather critical bugs in the CModel code on the HSC side (they would have been introduced on the LSST side in the last transfer, DM-2977):

      • The minInitialRadius configuration parameter had a default that is too small, causing many galaxies to be fit with point source models, leading to bad star/galaxy classifications. This is HSC-1306.
      • There was a simple but important algebra error in the uncertainty calculation, making the uncertainty a strong function of magnitude. This is HSC-1313.

      On the LSST side, the transfer should be quite simple; we'll have to rewrite a bit of code due to the difference in measurement frameworks, but there was very little to begin with (most of the effort in the HSC issues was in debugging).

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                • Assignee:
                  jbosch Jim Bosch
                  Reporter:
                  jbosch Jim Bosch
                  Reviewers:
                  Bob Armstrong
                  Watchers:
                  Bob Armstrong, Jim Bosch, Nate Lust
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                  Dates

                  • Created:
                    Updated:
                    Resolved:

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