Deep coadd input summary

A table that documents which visits and detectors contributed to which tract and patch, for deep coadd images.

Access

The deep coadd input summary table is only accessible via the Butler service.

TAP

This dataset is not available via TAP.

Butler

• Citation: NSF-DOE Vera C. Rubin Observatory (2026); Legacy Survey of Space and Time Data Preview 2: deep_coadd_input_summary dataset type https://doi.org/10.71929/rubin/3382551 [BibTeX]

• Dataset type: (‘deep_coadd_input_summary’, {skymap}, ArrowAstropy))

• Format: Parquet

• Number of Butler datasets: 1

Description

The deep_coadd_input_summary table provides a patch-level summary of the visit detector images that contributed to build each deep coadd. Note that the deep_coadd_input_summary table does not include information about which visit detector images contributed to each deep coadd cell. The deep_coadd_input_summary table contains 7 columns and 21,235,500 rows.

A schema is not yet published for the deep_coadd_input_summary table. The table contains one row per visit detector image per deep coadd that the visit detector image contributes to. The columns are:

• tract: ID number of the top level, ‘tract’, within the standard LSST skymap

• patch: ID number of the second level, ‘patch’, within the standard LSST skymap

• visit: visit ID number

• detector: detector ID number

• weight: dimensionless weight for the visit detector image when building the deep coadd, which is built using a weighted mean of the relevant visit detector images

• goodpix: number of pixels from the visit detector image that overlap the coadd patch

• band: name of the band used to take the visit detector image

Tutorials

See the 200-level catalog Tutorials for a notebook on the deep_coadd_input_summary table.