Hello! Liu et al. 2024 reports several flags (Table 3) that are useful for discriminating between false positives and true detections in difference image analysis. The results from DetectAndMeasureTask (release r29.2) contain columns corresponding to most of the flags mentioned in the paper, but I’m unable to locate base_SdssShape_flag and base_GaussianFlux_flag_badShape. Does anyone know if these flags were renamed or removed from the results in this release? Thank you!
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Hi @deppep thank you for the question. It looks they are not in the DIA sources for DP0 and DP1 (schema for column names and descriptions). It could be that some columns are not included in the release. Perhaps DM team experts can give more details.
The official schemas of our final catalogs are here: Alert Production Database
We consolidated the measurement plugins that are run in DetectAndMeasureTask to make AP run faster and more efficiently, and that did drop the SDSS shape and GaussianFlux plugins. The current shape_flag would be the most similar to base_SdssShape_flag, but is based on the HSM shape measurement instead of SDSS.
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