References and prior art

lsst.faro builds on

• The lsst.verify framework for computing data quality metrics, described in DMTN-098 and DMTN-057
• The validate_drp package, the Gen2 middleware based code for computing KPMs, as described in DMTN-008

Design goals

Here we outline the architecture and design concepts of lsst.faro

• Enable the computation of scalar performance metrics for LSST
• Gen3 based

Architecture

faro is based on the :ref:lsst.verify framework for computing key performance metrics.

Organization of the faro package

Directory structure

• Preparation: produces an intermediate data product
• Measurement: produces one scalar lsst.verify.Measurement per unit of data (e.g., per tract, per patch).
• Summary: takes collection of lsst.verify.Measurement objects as input and produces a single scalar lsst.verify.Measurement that is an aggregation (e.g., mean, median, rms, etc.) of the per-tract, per-patch, etc. metrics.

Naming conventions