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  1. Data Management
  2. DM-6965

Record variance rescaling in coaddition

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      Data Release Production

      Description

      The variance rescaling we're doing on the coadds (to try to account for missing covariance) is currently causing the HSC weak lensing team a lot of problems, because they affect every uncertainty value we produce and they're hard to include in simulations that otherwise look a lot like the data. I think we need to disable this - and probably take it out of the codebase entirely, just to be safe - before the next major HSC release, even if we don't have anything to replace it. I think it's doing more harm than good. That will require changing coadd detection thresholds to compensate, I think.

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            • Assignee:
              price Paul Price
              Reporter:
              jbosch Jim Bosch
              Reviewers:
              Jim Bosch
              Watchers:
              Jim Bosch, John Swinbank, Paul Price, Robert Lupton
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