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Paper detail

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

We present a framework for identifying and flagging malfunctioning antennas in large radio interferometers. We outline two distinct categories of metrics designed to detect outliers along known failure modes of large arrays: 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 metrics used, and present tailored visualizations that aid us in clearly identifying new and existing systematics. We implement these techniques using data from 105 antennas in the Hydrogen Epoch of Reionization Array (HERA) as a case study. Finally, we provide a detailed algorithm for implementing these metrics as flagging tools on real data sets.

preprint2022arXivOpen access
Dara StorerJoshua S. DillonDaniel C. JacobsMiguel F. MoralesBryna J. HazeltonAaron Ewall-WiceZara AbdurashidovaJames E. AguirrePaul AlexanderZaki S. AliYanga BalfourAdam P. BeardsleyGianni BernardiTashalee S. BillingsJudd D. BowmanRichard F. BradleyPhilip BullJacob BurbaSteven CareyChris L. CarilliCarina ChengDavid R. DeBoerEloy de Lera AcedoMatt DexterScott DynesJohn ElyNicolas FagnoniRandall FritzSteven R. FurlanettoKingsley Gale-SidesBrian GlendenningDeepthi GorthiBradley GreigJasper GrobbelaarZiyaad HaldayJacqueline N. HewittJack HickishTian HuangAlec JosaitisAustin JuliusMacCalvin KarisebNicholas S. KernJoshua KerriganPiyanat KittiwisitSaul A. KohnMatthew KolopanisAdam LanmanPaul La PlanteAdrian LiuAnita LootsDavid MacMahonLourence MalanCresshim MalgasZachary E. MartinotAndrei MesingerMathakane MolewaTshegofalang MosianeSteven G. MurrayAbraham R. NebenBojan NikolicChuneeta Devi NunhokeeAaron R. ParsonsRobert PascuaNipanjana PatraSamantha PieterseJonathan C. PoberNima Razavi-GhodsDaniel RileyJames RobnettKathryn RosieMario G. SantosPeter SimsSaurabh SinghCraig SmithJianrong TanNithyanandan ThyagarajanPeter K. G. WilliamsHaoxuan Zheng
astro-ph.COastro-ph.IM
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Open access78 authors2 topics
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Authors

Dara StorerJoshua S. DillonDaniel C. JacobsMiguel F. MoralesBryna J. HazeltonAaron Ewall-WiceZara AbdurashidovaJames E. AguirrePaul AlexanderZaki S. AliYanga BalfourAdam P. BeardsleyGianni BernardiTashalee S. BillingsJudd D. BowmanRichard F. BradleyPhilip BullJacob BurbaSteven CareyChris L. CarilliCarina ChengDavid R. DeBoerEloy de Lera AcedoMatt DexterScott DynesJohn ElyNicolas FagnoniRandall FritzSteven R. FurlanettoKingsley Gale-SidesBrian GlendenningDeepthi GorthiBradley GreigJasper GrobbelaarZiyaad HaldayJacqueline N. HewittJack HickishTian HuangAlec JosaitisAustin JuliusMacCalvin KarisebNicholas S. KernJoshua KerriganPiyanat KittiwisitSaul A. KohnMatthew KolopanisAdam LanmanPaul La PlanteAdrian LiuAnita LootsDavid MacMahonLourence MalanCresshim MalgasZachary E. MartinotAndrei MesingerMathakane MolewaTshegofalang MosianeSteven G. MurrayAbraham R. NebenBojan NikolicChuneeta Devi NunhokeeAaron R. ParsonsRobert PascuaNipanjana PatraSamantha PieterseJonathan C. PoberNima Razavi-GhodsDaniel RileyJames RobnettKathryn RosieMario G. SantosPeter SimsSaurabh SinghCraig SmithJianrong TanNithyanandan ThyagarajanPeter K. G. WilliamsHaoxuan Zheng

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