Merge pull request #35 from lsst/tickets/LCR-3480

tickets/LCR-3480

LSE-163.tex

@@ -98,6 +98,7 @@
 \addtohist{3.6}{2021-12-17}{Implementation of LCR-2722 (RFC-695, DM-29731)  DIAObjects table updated to reflect the plans for host association; updated to ``Rubin'' language}{M. Graham}
 \addtohist{3.7}{2022-10-18}{Implementation of LCR-3293 (\jira{RFC-876}) Remove CoaddSources and ref to DMS-REQ-0277. Fix ref RDO-013}{W. O'Mullane}
 \addtohist{3.8}{2023-07-10}{Implementation of LCR-3476 (\jira{RFC-921}) Add detailed description of plans and data products for shear estimation}{J. Bosch}
+\addtohist{3.9}{2023-09-22}{Implementation of LCR-3480 (\jira{RFC-895}) Add survey property maps.}{M. Graham}
 }
 
 \begin{document}

dpdd.tex

@@ -1215,6 +1215,14 @@ \subsubsection{Coadded Images}
 
 We \emph\textbf{will} retain smaller sections of all generated coadds, to support quality assessment and targeted science.\dmreq{0338} Retained sections may be positioned to cover areas of the sky of special interest such as overlaps with other surveys, nearby galaxies, large clusters, etc.
 
+\subsubsection{Survey Property Maps}
+\label{sec:spmaps}
+
+Several types of survey property maps will be generated and served to users.
+The properties are typically the mean or total values determined from the images input to generate the \emph{deep coadd}.
+The types of maps will include the total exposure time; the point-source 5-sigma AB magnitude limit; the weighted mean of the PSF moments; the weighted mean of the sky background and sky noise; and the average effect of differential chromatic refraction (DCR) in the right ascension and declination directions, and in the PSF moments.
+Property maps based on statistics measured on \emph{deep coadds} might also be generated.
+
 \subsection{Data Release Availability and Retention Policies}
 \label{sec:retention}