Melissa Graham added a comment - 11/Dec/19 10:26 PM First task is to review current version  https://dmtn-118.lsst.io/v/DM-19593/index.html by the end of December.

Melissa Graham added a comment - 20/Dec/19 12:37 AM A look through requirements documentation for anything related to variability characterization: LPM-17 3.5 Data Processing and Management Requirements "Level 2 data products ... will include ... variability information such as ... an appropriate compact description of light curves." "The data stream will also include prior variability information ... [which] will at the very least include low-order light-curve moments and probability that the object is variable, and ideally the full light curves in all available bands." LSE-61 1.3.7 Characterizing Variability DMS-REQ-0319 Specification: For alert production, DIAObject variability characterization shall include data collected during the time period from the present to at least diaCharacterizationCutoff in the past. LSE-61 1.3.8.1 DIAObject Attributes DMS-REQ-0272 Specification: For each DIAObject the DMS shall store summary attributes including at least ... periodic and non-periodic variability measures; and flags that encode special conditions encountered in measuring the above quantities. LSE-61 1.3.11 DIAForcedSource Catalog and 1.4.16 Forced-Source Catalog Just noting the discussions say "The large number of such forced sources makes it impractical to measure more attributes than are necessary to construct a light curve for variability studies.", and that this means there's no requirement to include Forced Photometry in any variability characterization parameter – not that it couldn't be done anyway of course. LSE-61 1.3.18 Regenerating L1 Data Products During Data Release Processing DMS-REQ-0325 Discussion: Variability characterization will use the full light curve history. LSE-61 1.4.3.2 Object Characterization DMS-REQ-0276 Specification: Each entry in the Object Catalog shall include the following characterization measures ... and a variability characterization.  

Melissa Graham added a comment - 20/Dec/19 12:42 AM Initial comments on current draft emailed to Eric.