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  1. Data Management
  2. DM-17692

Examine ref and source flux error propagation in PhotoCalTask and colorterms

    Details

    • Type: Story
    • Status: To Do
    • Resolution: Unresolved
    • Fix Version/s: None
    • Component/s: pipe_tasks
    • Labels:
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      Description

      The code for the error propagation in PhotoCalTask and colorterms.py seems fishy to me, and is not really tested by the existing tests. We should work out the math for propagating these errors, implement tests of it, check that the code behaves correctly, and redo it if necessary.

      In particular, the interaction between Colorterm.propagateFluxErrors() and calib.absMagErrFromFluxErr() needs to be checked.

      We're not helped by the fact that the ref flux errors were originally totally ignored and/or faked (see DM-2308), and reference catalogs weren't guaranteed to even have flux errors (until RFC-535).

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                • Assignee:
                  Unassigned
                  Reporter:
                  Parejkoj John Parejko
                  Watchers:
                  Eli Rykoff, Jim Bosch, John Parejko, John Swinbank, Meredith Rawls, Russell Owen, Simon Krughoff, Yusra AlSayyad
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                  • Created:
                    Updated:

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