Automated Detection of Antenna Malfunctions in Large-N Interferometers: A Case Study with the Hydrogen Epoch of Reionization Array

@inproceedings{Storer2021AutomatedDO,
  title={Automated Detection of Antenna Malfunctions in Large-N Interferometers: A Case Study with the Hydrogen Epoch of Reionization Array},
  author={D. M. Storer and Joshua S. Dillon and Daniel C. Jacobs and Miguel F. Morales and Bryna J. Hazelton and Aaron Ewall-Wice and Zara Abdurashidova and James E. Aguirre and Paul Alexander and Zaki S Ali and Yanga Balfour and Adam P. Beardsley and Gianni Bernardi and Tashalee S. Billings and Judd D. Bowman and Richard F. Bradley and Philip Bull and Jacob Burba and Steve H. Carey and Christopher L. Carilli and Carina Cheng and David R. DeBoer and Eloy de Lera Acedo and Matt Dexter and Scott B. C. Dynes and J. A. Ely and Nicolas Fagnoni and Randall Fritz and Steven R. Furlanetto and Kingsley Gale-Sides and B. E. Glendenning and Deepthi Gorthi and Bradley Greig and Jasper Grobbelaar and Ziyaad Halday and Jacqueline N. Hewitt and Jack Hickish and Tian Huang and Alec Josaitis and Austin Julius and M. Kariseb and Nicholas S. Kern and Joshua Kerrigan and Piyanat Kittiwisit and Saul A. Kohn and Matthew Kolopanis and Adam Lanman and Paul La Plante and Adrian Liu and Anita Loots and David Macmahon and Lourence Malan and Cresshim Malgas and Zachary E. Martinot and Andrei Mesinger and Mathakane Molewa and Tshegofalang Mosiane and Steven G Murray and Abraham R. Neben and Bojan Nikoli{\'c} and Chuneeta D. Nunhokee and Aaron Parsons and Robert Pascua and Nipanjana Patra and Samantha Pieterse and Jonathan C. Pober and Nima Razavi-Ghods and Daniel Riley and James Robnett and Kathryn Rosie and Mario G Santos and Peter H Sims and Saurabh Singh and Craig H. Smith and Jianrong Tan and Nithyanandan Thyagarajan and Peter K. G. Williams and Haoxuan Zheng},
  year={2021}
}
We present a framework for identifying and flagging malfunctioning antennas in large radio interferometers. Using data from 105 antennas in the Hydrogen Epoch of Reionization Array (HERA) as a case study, we outline two distinct categories of metrics designed to detect outliers along known failure modes of the array: cross-correlation metrics, based on all antenna pairs, and auto-correlation metrics, based solely on individual antennas. We define and motivate the statistical framework for all… Expand

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