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  1. Request For Comments
  2. RFC-329

Persist HeavyFootprints as part of a data release

    Details

    • Type: RFC
    • Status: Implemented
    • Resolution: Done
    • Component/s: DM, TCT
    • Labels:

      Description

      This RFC requests that the proposal described in LDM-513 be adopted into the DM baseline plan. From LDM-513:

      Most catalog measurements produced in a LSST Data Release Production will be derived from pixel values that have been deblended – we have apportioned the flux in each pixel to each of the Objects that overlap that pixel. These deblended pixels values are thus a critical link in our provenance chain, and should be provided to users as a first-class data product. This document provides further justification for the proposal to add this data product and provides a preliminary estimate of the impact on data storage requirements of an additional 83 TB in DR1 and 221 TB in DR11.

      We request that the TCT approve the science case described in LDM-513 and verify the calculations described in the document.

      Once approved, we have to decide whether LSE-163 (DPDD) and LSE-61 (DMSR) should be updated to match.

      Kian-Tat Lim has calculated the cost impact and will report below.

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            womullan Wil O'Mullane added a comment -

            ok so we adopt this.
            Does that imply DM-513 should be added to the list review documents for july (since it will be part of the baseline now).

            Plus there was a further question if LSE-61 or LSE-163 should be updated - who owns each of those ?

            Show
            womullan Wil O'Mullane added a comment - ok so we adopt this. Does that imply DM-513 should be added to the list review documents for july (since it will be part of the baseline now). Plus there was a further question if LSE-61 or LSE-163 should be updated - who owns each of those ?
            Hide
            womullan Wil O'Mullane added a comment -

            based on DMLf2f discussion with feedback from Robert and clarification from Jim this is adopted,.

            Show
            womullan Wil O'Mullane added a comment - based on DMLf2f discussion with feedback from Robert and clarification from Jim this is adopted,.
            Hide
            jbosch Jim Bosch added a comment -

            LDM-513 is a pretty tiny and low-level document; if I had to do it all over again I'd have just made it a technote. I don't think it makes sense to include it in review materials.

            Show
            jbosch Jim Bosch added a comment - LDM-513 is a pretty tiny and low-level document; if I had to do it all over again I'd have just made it a technote. I don't think it makes sense to include it in review materials.
            Hide
            tjenness Tim Jenness added a comment -

            I suggested an LDM because CCB were clearly going to be approving the content of the document.

            I would have preferred the final numbers to also be in the document rather than the numbers sufficient to calculate the numbers we want.

            I'll sort out the addition of this document to docushare.

            Show
            tjenness Tim Jenness added a comment - I suggested an LDM because CCB were clearly going to be approving the content of the document. I would have preferred the final numbers to also be in the document rather than the numbers sufficient to calculate the numbers we want. I'll sort out the addition of this document to docushare.
            Hide
            tjenness Tim Jenness added a comment -

            Are we dealing with the DPDD and/or LSE-61 changes in this RFC?

            Show
            tjenness Tim Jenness added a comment - Are we dealing with the DPDD and/or LSE-61 changes in this RFC?

              People

              • Assignee:
                tjenness Tim Jenness
                Reporter:
                tjenness Tim Jenness
                Watchers:
                Donald Petravick, Fred Moolekamp, Gregory Dubois-Felsmann, Jim Bosch, John Swinbank, Kian-Tat Lim, Mario Juric, Robert Lupton, Tim Jenness, Wil O'Mullane
              • Votes:
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                Dates

                • Created:
                  Updated:
                  Resolved:
                  Planned End:

                  Summary Panel