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  1. Data Management
  2. DM-23078

Add sky objects to the single frame processing step

    Details

    • Type: Story
    • Status: Done
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: None
    • Labels:
    • Story Points:
      12
    • Epic Link:
    • Sprint:
      DRP S20-2 (Jan), DRP S20-3 (Feb), DRP S20-5 (Apr), DRP S20-6 (May)
    • Team:
      Data Release Production

      Description

      Currently, sky objects are implemented on the coadds (see ticket DM-4840). For various QA reasons it would be beneificial to have sky objects for single frame imaging also. This ticket adds sky objects at the single frame visit level. Such sources are termed 'sky sources', to distinguish them from the currently existing sky objects output by the stack and in keeping with processing nomenclature standards.

      A community post highlighting this change is located here: https://community.lsst.org/t/sky-sources-added-to-single-frame-processing/4137

        Attachments

        1. skySourcePlots.pdf
          1.10 MB
        2. v0000318-Y.png
          v0000318-Y.png
          344 kB
        3. v0001166-Z.png
          v0001166-Z.png
          414 kB
        4. v0001202-R.png
          v0001202-R.png
          569 kB
        5. v0001228-I.png
          v0001228-I.png
          496 kB
        6. v0011690-G.png
          v0011690-G.png
          525 kB

          Issue Links

            Activity

            Hide
            lskelvin Lee Kelvin added a comment -

            Added an example output PDF created by Lauren showcasing the use of this ticket in processing RC2 data. Histograms on page 1 show the recovered distributions of sky source fluxes within various aperture sizes, as indicated by the inset legend. A total of 5 visits are shown here (one for each passband). The second page is an equivalent run on DC2 data, for reference.

            Show
            lskelvin Lee Kelvin added a comment - Added an example output PDF created by Lauren showcasing the use of this ticket in processing RC2 data. Histograms on page 1 show the recovered distributions of sky source fluxes within various aperture sizes, as indicated by the inset legend. A total of 5 visits are shown here (one for each passband). The second page is an equivalent run on DC2 data, for reference.
            Hide
            lskelvin Lee Kelvin added a comment -

            Thank you Jim. There are 3 PRs associated with this ticket. Looking forward to hearing your comments.

            Show
            lskelvin Lee Kelvin added a comment - Thank you Jim. There are 3 PRs associated with this ticket. Looking forward to hearing your comments.
            Hide
            lauren Lauren MacArthur added a comment -

            Also note that the color-coding of the focal plane panel is now based on “metric” measurement per ccd, where here the metric is mean aperture flux of sky sources per ccd.

            Show
            lauren Lauren MacArthur added a comment - Also note that the color-coding of the focal plane panel is now based on “metric” measurement per ccd, where here the metric is mean aperture flux of sky sources per ccd.
            Hide
            jbosch Jim Bosch added a comment -

            My only comment is on the pipe_tasks PR, but it's a bit of a structural code - I think we need to move the implementation to one place or the other, rather than leaving it split up the way it is.

            Show
            jbosch Jim Bosch added a comment - My only comment is on the pipe_tasks PR, but it's a bit of a structural code - I think we need to move the implementation to one place or the other, rather than leaving it split up the way it is.
            Hide
            lskelvin Lee Kelvin added a comment -

            Thanks Jim. Lauren and I have moved the column addition logic into pipe_tasks, and removed the equivalent from meas_algorithms. Sky sources are now fully implemented in one place as you suggest. I hope that looks okay.

            Show
            lskelvin Lee Kelvin added a comment - Thanks Jim. Lauren and I have moved the column addition logic into pipe_tasks, and removed the equivalent from meas_algorithms. Sky sources are now fully implemented in one place as you suggest. I hope that looks okay.
            Hide
            lskelvin Lee Kelvin added a comment - - edited

            I've added some example plots showing the placement of sky sources on 5 random visits (one per filter). All CCDs successfully placed 100 sky sources. These plots show CCD 42, with the background calexp images binned into 16-pixel blocks.

            Show
            lskelvin Lee Kelvin added a comment - - edited I've added some example plots showing the placement of sky sources on 5 random visits (one per filter). All CCDs successfully placed 100 sky sources. These plots show CCD 42, with the background calexp images binned into 16-pixel blocks.
            Hide
            lskelvin Lee Kelvin added a comment -

            Thanks again Jim. Branches merged and deleted.

            Show
            lskelvin Lee Kelvin added a comment - Thanks again Jim. Branches merged and deleted.
            Hide
            lskelvin Lee Kelvin added a comment -

            I've added a community post highlighting this change here: https://community.lsst.org/t/sky-sources-added-to-single-frame-processing/4137

            Show
            lskelvin Lee Kelvin added a comment - I've added a community post highlighting this change here: https://community.lsst.org/t/sky-sources-added-to-single-frame-processing/4137

              People

              • Assignee:
                lskelvin Lee Kelvin
                Reporter:
                lskelvin Lee Kelvin
                Reviewers:
                Jim Bosch
                Watchers:
                Eric Bellm, Jim Bosch, Lauren MacArthur, Lee Kelvin
              • Votes:
                0 Vote for this issue
                Watchers:
                4 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved:

                  Summary Panel