drp.tex

\section{Data Release Processing} \label{sec:drp}

Data Release Processing (DRP) is the data pipeline that produces the calibrated images, detection catalogs, and derived data 
products defined in section \S TBD, using the LSST Science Pipelines (citation). DP2 was processed at the United States Data Facility (USDF) at SLAC, with pilot runs at the National Institute of Nuclear and Particle Physics (IN2P3) computing center. 

The processing campaign consists of four major stages: (1) single-frame processing, (2) calibration, (3) multi-visit processing, (4) variable and transient source processing.
Data quality and key metrics for verification and validation are actively monitored during each stage, and comprehensive verification and validation assessments are completed before processing the next stage.

This section describes the high-level algorithms, configurations, and verification metrics for each stage, including changes and improvements from DP1 (citation).

\subsection{Single-Visit Processing} \label{sec:drp-singlevisit}

\subsubsection{Calibration \& Instrument Signature Removal (ISR)} \label{sec:drp-singlevisit-calibrationisr}
\subsubsection{Background Subtraction} \label{sec:drp-singlevisit-background}
\input{subsubsections/background}

\subsection{Calibration} \label{sec:drp-calibration}
\subsubsection{PSF Modeling} \label{sec:drp-calibration-psfmodeling}
\subsubsection{Astrometric Calibration} \label{sec:drp-calibration-astrometry}
\subsubsection{Photometric Calibration} \label{sec:drp-calibration-photometry}

\subsection{Multi-Visit Processing} \label{sec:drp-multivisit}
\subsubsection{Input Data Selection} \label{sec:drp-multivisit-inputselection}
\subsubsection{Coaddition} \label{sec:drp-multivisit-coaddition}
\subsubsection{Detection, Deblending, \& Measurement} \label{sec:drp-multivisit-detection}
\subsubsection{First Look} \label{sec:drp-multivisit-firstlook}

\subsection{Variable \& Transient Source Processing} \label{sec:drp-variabletransient}
\subsubsection{Light Curves} \label{sec:drp-variabletransient-lightcurves}
\subsubsection{Solar System Processing} \label{sec:drp-variabletransient-solar}
\subsubsection{Difference Image Analysis (DIA)} \label{sec:drp-variabletransient-dia}
\subsubsection{Artifact Rejection} \label{sec:drp-variabletransient-artifact}