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  1. Data Management
  2. DM-11656

Fix ZOGY failure when PSFs are offset

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    Details

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

      In DM-10805 we fixed instances where the PSF dimensions between the two images were mismatched, however, this (often) leads to cases where the resized PSFs don't have the same center – in this case, the cross-convolved (PSF matched) images will be offset and the subtraction will be bad.

      This situation happens when the PSF of the template has been warped or is the result of a coadd.

      This needs to be fixed in this ticket.

        Attachments

          Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. DM-23855 Audit and debug current zogy image differencing code

          • Done
          relates to

          Story - Created by Jira Software - do not edit or delete. Issue type for a user story. DM-10805 Spatially-varying ZOGY option

          • Done

            Activity

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            reiss David Reiss created issue -
            reiss David Reiss made changes -
            Field Original Value New Value
            Epic Link DM-9989 [ 31470 ]
            reiss David Reiss made changes -
            Link This issue relates to DM-10805 [ DM-10805 ]
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            reiss David Reiss added a comment -

            A preliminary attempt to fix this has been made by finding the brightest pixel in each PSF and offsetting one or the other until their brightest pixels have the same coordinate.

            Show
            reiss David Reiss added a comment - A preliminary attempt to fix this has been made by finding the brightest pixel in each PSF and offsetting one or the other until their brightest pixels have the same coordinate.
            reiss David Reiss made changes -
            Status To Do [ 10001 ] In Progress [ 3 ]
            reiss David Reiss made changes -
            Epic Link DM-9989 [ 31470 ] DM-9441 [ 30199 ]
            frossie Frossie Economou made changes -
            Status Admin Review [ 3 ] In Progress [ 11605 ]
            frossie Frossie Economou made changes -
            Status Review [ 11605 ] In Progress [ 3 ]
            gkovacs Gabor Kovacs [X] (Inactive) made changes -
            Status In Progress [ 3 ] To Do [ 10001 ]
            gkovacs Gabor Kovacs [X] (Inactive) made changes -
            Resolution Done [ 10000 ]
            Status To Do [ 10001 ] Invalid [ 11005 ]
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            gkovacs Gabor Kovacs [X] (Inactive) added a comment -

            PSF dimensions are not an issue in the current ZOGY implementation. The current set of ZOGY considerations are collected under DM-23855.

            Show
            gkovacs Gabor Kovacs [X] (Inactive) added a comment - PSF dimensions are not an issue in the current ZOGY implementation. The current set of ZOGY considerations are collected under DM-23855 .
            gkovacs Gabor Kovacs [X] (Inactive) made changes -
            Link This issue duplicates DM-23855 [ DM-23855 ]

              People

              Assignee:
              reiss David Reiss
              Reporter:
              reiss David Reiss
              Watchers:
              David Reiss, Gabor Kovacs [X] (Inactive), Michael Wood-Vasey [X] (Inactive), Yusra AlSayyad
              Votes:
              0 Vote for this issue
              Watchers:
              4 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved:

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