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  1. Data Management
  2. DM-10487

obs_cfht needs to be updated in order to be compatible with latest CFHT data

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    Details

    • Type: Improvement
    • Status: Done
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: obs_cfht
    • Labels:
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    • Team:
      External

      Description

      obs_cfht is failing on recent CFHT data for 2 independent reasons :

      1. On old data the keyword "EXTNAME" appears 2 times in the fits header, the first one with the value "COMPRESSED_IMAGE" and the second one with the actual name of the extensions. While on some more recent data (not all !), there is only 1 occurrence of the "EXTNAME" keyword which contains the extension name. Notice that even if COMPRESSED_IMAGE is missing, the image is actually compressed.
      2. Recent images need new bad pixels mask files. These masks correspond to the addition of 4 more CCD in the focal plane (36-->40).

      The first fix is trivial and requires to override the getExtensionName method in ingest.py in order to check whether md.get("EXTNAME") is returning a tuple or a single value.

      The second issue requires to get the missing files from CFHT/Megacam (I got them from Jean-Charles Cuillandre) and to convert them in the format expected by obs_cfht. I already did that a few years ago and need to retrieve the method...

      New filters have also been installed since period 2015A and should be defined in ingest.py

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            Assignee:
            boutigny Dominique Boutigny
            Reporter:
            boutigny Dominique Boutigny
            Reviewers:
            Simon Krughoff
            Watchers:
            Dominique Boutigny, John Swinbank, Simon Krughoff
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              Updated:
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