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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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      Description

      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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          krughoff Simon Krughoff added a comment -

          Looks just fine to me. Feel free to merge.

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          krughoff Simon Krughoff added a comment - Looks just fine to me. Feel free to merge.
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          swinbank John Swinbank added a comment -

          Dominique Boutigny – it looks as though this has been merged. Can we mark the issue as done?

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          swinbank John Swinbank added a comment - Dominique Boutigny – it looks as though this has been merged. Can we mark the issue as done?
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          boutigny Dominique Boutigny added a comment -

          Yes. This issue is solved.

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          boutigny Dominique Boutigny added a comment - Yes. This issue is solved.

            People

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

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