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  1. Data Management
  2. DM-11813

Summary of A&L Decorrelation and Zogy

    Details

    • Type: Story
    • Status: Done
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: ip_diffim
    • Labels:
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      Description

      Write up summary of current status and issues with A&L Decorrelation and Zogy

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            reiss David Reiss added a comment -

            Thank you very much for all the comments, Simon Krughoff. Here are my responses – I will of course fix the typo's, etc.

            1. I agree with the issue of the relative flux calibration issue, and how it makes some of the figures relatively uninformative. Unfortunately, I didn't notice this until I started running lots of examples using this particular CCD. However, that being said, I have seen it in other DECam images and it might be an issue with either the flux calibration or background subtraction (although I don't think that background subtraction should cause this problem). I will make that clearer in the document. Also I will point out that on simulated data this is not an issue so maybe it points to a problem with the normalization and/or over-sensitivity of Zogy to errors in the normalization.

            2. Yes I can make tickets on all the issues and add those to the document. Who to assign them to?

            3. I can make a minimal data repo with these same example data.

            4. I will search for a DECam example where the flux calibration issue is not evident for Zogy.

            Show
            reiss David Reiss added a comment - Thank you very much for all the comments, Simon Krughoff . Here are my responses – I will of course fix the typo's, etc. 1. I agree with the issue of the relative flux calibration issue, and how it makes some of the figures relatively uninformative. Unfortunately, I didn't notice this until I started running lots of examples using this particular CCD. However, that being said, I have seen it in other DECam images and it might be an issue with either the flux calibration or background subtraction (although I don't think that background subtraction should cause this problem). I will make that clearer in the document. Also I will point out that on simulated data this is not an issue so maybe it points to a problem with the normalization and/or over-sensitivity of Zogy to errors in the normalization. 2. Yes I can make tickets on all the issues and add those to the document. Who to assign them to? 3. I can make a minimal data repo with these same example data. 4. I will search for a DECam example where the flux calibration issue is not evident for Zogy.
            Hide
            swinbank John Swinbank added a comment -

            2. Yes I can make tickets on all the issues and add those to the document. Who to assign them to?

            I think it's fine to leave them unassigned for now. Please add them to the DM-9989 epic so we know where to find them.

            Thank you!

            Show
            swinbank John Swinbank added a comment - 2. Yes I can make tickets on all the issues and add those to the document. Who to assign them to? I think it's fine to leave them unassigned for now. Please add them to the DM-9989 epic so we know where to find them. Thank you!
            Hide
            krughoff Simon Krughoff added a comment -

            Thanks very much.

            Simon

            Show
            krughoff Simon Krughoff added a comment - Thanks very much. Simon
            Hide
            reiss David Reiss added a comment - - edited

            Minimal data repo: https://github.com/lsst-dm/dmtn-061-data

            Also added a link to the repo in the document.

            Show
            reiss David Reiss added a comment - - edited Minimal data repo: https://github.com/lsst-dm/dmtn-061-data Also added a link to the repo in the document.
            Hide
            reiss David Reiss added a comment -

            Added Jira tickets and links to them from this document.

            Show
            reiss David Reiss added a comment - Added Jira tickets and links to them from this document.

              People

              • Assignee:
                reiss David Reiss
                Reporter:
                reiss David Reiss
                Reviewers:
                Eric Bellm
                Watchers:
                David Reiss, Eric Bellm, John Swinbank, Simon Krughoff, Yusra AlSayyad
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                5 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved:

                  Summary Panel