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  1. Data Management
  2. DM-4322

Amplifier readout noise set to crazy values for some old CFHT images

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      In cfhtIsrTask.py the readout noise for amp A and amp B is set from the values stored in the raw image fits header identified by the keywords RDNOISEA and RDNOISEB. Typically the noise level is ~5 electrons. For some old CFHT images acquired in 2004, RDNOISEA/B is equal to 65535. In these cases, the parameter identified by the keyword RDNOISE is nevertheless correct.

      cfhtIsrTask.py should be modified to use RDNOISE instead of RDNOISEA/B when this situation happens.

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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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