DM Monthly Status Report for January 2019

The DM monthly status report covering December activities has been posted to DocuShare, collection-7296. For convenience, the High-level Summary is pasted below. Direct link to the full report (pdf):

High-level Summary

Technical Progress

This month saw the completion of the NSF level two milestone LDM-503-07 “Camera Data Processing”. This demonstrated the successful transfer, ingest and processing of camera test stand data using the LSST Science Pipelines and Science Platform; as such, it represents a significant landmark in project integration.

Other significant technical work included the integration of Science Platform authentication components. This makes it possible for the Portal Aspect of the Platform to communicate with WebDAV file access systems.

The IVOA TAP interface to QServ, based on the implementation developed at CADC, was deployed in the LSST Data Facility this month. This makes it possible to call Qserv-specific functionality through a TAP interface.

The Science Pipelines saw significant upgrades to the instrument signature removal (ISR) functionality this month, with a overhaul and refactoring of this part of the code. The “pyprofit” galaxy fitting package was also substantially updated to support improved galaxy fitting workflows — and, in the process, was renamed “MultiProFit”.

The SQuaRE team has completed its proposed system for exposing telemetry data to the Science Platform with low latencies. Low frequency live data from the M1/M3 rig in the mirror lab has been captured, and high-frequency mock data has been used to test throughput and latencies.

At the monthly meeting of LSST ESnet stakeholders, the agreement for ESnet to provide two 100 gigabit/second dedicated fiber links from Atlanta to Chicago in FY21 (and two interim links in FY20) was confirmed and the outstanding questions regarding funding were resolved.

Community Interactions, Meetings and Workshops

Several members of DM staff attended the 233rd Meeting of the American Astronomical Society in Seattle during early January. They presented plans for the the LSST Science Platform at the LSST Town Hall and hosted a day of tutorial sessions on the LSST Science Platform (running on infrastructure at the LSST Data Facility). Several posters describing various aspects of the LSST system and software pipelines were also on display.

A further Science Platform demonstration was given at the Astronomical Time Series 2019 workshop in Heidelberg, where the DM Subsystem Scientist and Alert Production Science Lead also presented LSST’s plans for time series data.

LDM-612, “Plans and Policies for LSST Alert Distribution” was completed and circulated to the community. This document is intended to help the community at large, and potential alert broker operators in particular, better understand how the LSST alert system will operate.

LDM-294, “DM Organization and Management“ was updated including a revisions to the product tree, a description of the DM Change Control Board (DM-CCB) and its processes, and refinements to the release procedure.

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