DESC DC2 Data Release Note
Abstract
In preparation for cosmological analyses of the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST), the LSST Dark Energy Science Collaboration (LSST DESC) has created a 300 deg simulated survey as part of an effort called Data Challenge 2 (DC2). The DC2 simulated sky survey, in six optical bands with observations following a reference LSST observing cadence, was processed with the LSST Science Pipelines (19.0.0). In this Note, we describe the public data release of the resulting object catalogs for the coadded images of five years of simulated observations along with associated truth catalogs. We include a brief description of the major features of the available data sets. To enable convenient access to the data products, we have developed a web portal connected to Globus data services. We describe how to access the data and provide example Jupyter Notebooks in Python to aid first interactions with the data. We welcome feedback and questions about the data release via a GitHub repository.
Keywords
Cite
@article{arxiv.2101.04855,
title = {DESC DC2 Data Release Note},
author = {LSST Dark Energy Science Collaboration and Bela Abolfathi and Robert Armstrong and Humna Awan and Yadu N. Babuji and Franz Erik Bauer and George Beckett and Rahul Biswas and Joanne R. Bogart and Dominique Boutigny and Kyle Chard and James Chiang and Johann Cohen-Tanugi and Andrew J. Connolly and Scott F. Daniel and Seth W. Digel and Alex Drlica-Wagner and Richard Dubois and Eric Gawiser and Thomas Glanzman and Salman Habib and Andrew P. Hearin and Katrin Heitmann and Fabio Hernandez and Renée Hložek and Joseph Hollowed and Mike Jarvis and Saurabh W. Jha and J. Bryce Kalmbach and Heather M. Kelly and Eve Kovacs and Danila Korytov and K. Simon Krughoff and Craig S. Lage and François Lanusse and Patricia Larsen and Nan Li and Emily Phillips Longley and Robert H. Lupton and Rachel Mandelbaum and Yao-Yuan Mao and Phil Marshall and Joshua E. Meyers and Ji Won Park and Julien Peloton and Daniel Perrefort and James Perry and Stéphane Plaszczynski and Adrian Pope and Eli S. Rykoff and F. Javier Sánchez and Samuel J. Schmidt and Thomas D. Uram and Antonia Villarreal and Christopher W. Walter and Matthew P. Wiesner and W. Michael Wood-Vasey},
journal= {arXiv preprint arXiv:2101.04855},
year = {2025}
}
Comments
25 pages, 3 figures; 9 tables. A detailed changelog can be found in Appendix A. To obtain data, visit the DESC Data Portal at https://data.lsstdesc.org/