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  1. Data Management
  2. DM-3338

KPM Measurement: Photometric Repeatability: procCalRep, FY15

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    • Type: Epic
    • Status: Done
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: None
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    • Epic Name:
      KPM: Photometric Repeatability: procCalRep, FY15
    • WBS:
      02C.03
    • Team:
      Alert Production
    • Cycle:
      Summer 2015

      Description

      This will be measured on precursor data (almost certainly from HSC, via DM-2380) using the following procedure:

      • Run visit-level processing (i.e. ProcessCcdTask, probably via the new HSC driver ported on DM-3368). This must include aperture correction (DM-85).
      • Run relative photometric calibration (i.e. meas_mosaic, DM-2674).
      • Select bright stars and match across visits (new scripts, mostly delegating to existing code). Just selecting the stars used for PSF determination would probably work.
      • Plot magnitude deltas (difference from per-object mean magnitudes) vs. magnitude; measure RMS and outliers in magnitude bins.

      Given the limited amount of public HSC data available, this will probably be restricted to at most three bands (gri).

      This measurement will be the same as that for PA1uzy (DLP-316), and PA1gri (DLP-315) in this cycle (DM-3324, DM-3331), since we currently do not have a way of differentiating between pipeline-contributed errors and the complete error budget.

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              • Assignee:
                jbosch Jim Bosch
                Reporter:
                krughoff Simon Krughoff
                Watchers:
                Jim Bosch, John Swinbank, Kian-Tat Lim, Robert Lupton, Simon Krughoff
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                  Updated:
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                  Summary Panel