The current generation of all-sky surveys is rapidly expanding our ability to study variable and transient sources. These surveys, with a variety of sensitivities, cadences, and fields of view, probe many ranges of timescale and magnitude. Data from the Zwicky Transient Facility (ZTF) yields an opportunity to find variables on timescales from minutes to months. In this paper, we present the codebase, ztfperiodic, and the computational metrics employed for the catalogue based on ZTF's Second Data Release. We describe the publicly available, graphical-process-unit optimized period-finding algorithms employed, and highlight the benefit of existing and future graphical-process-unit clusters. We show how generating metrics as input to catalogues of this scale is possible for future ZTF data releases. Further work will be needed for future data from the Vera C. Rubin Observatory's Legacy Survey of Space and Time.
@article{arxiv.2009.14071,
title = {The ZTF Source Classification Project: II. Periodicity and variability processing metrics},
author = {Michael W. Coughlin and Kevin Burdge and Dmitry A. Duev and Michael L. Katz and Jan van Roestel and Andrew Drake and Matthew J. Graham and Lynne Hillenbrand and Ashish A. Mahabal and Frank J. Masci and Przemek Mróz and Thomas A. Prince and Yuhan Yao and Eric C. Bellm and Rick Burruss and Richard Dekany and Amruta Jaodand and David L. Kaplan and Thomas Kupfer and Russ R. Laher and Reed Riddle and Mickael Rigault and Hector Rodriguez and Ben Rusholme and Jeffry Zolkower},
journal= {arXiv preprint arXiv:2009.14071},
year = {2021}
}