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Tricolour: an optimized SumThreshold flagger for MeerKAT

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arxiv 2206.09179 v1 pith:ASTCVD6T submitted 2022-06-18 astro-ph.IM

Benjamin V. Hugo , Simon Perkins , Bruce Merry , Tom Mauch , Oleg M. Smirnov This is my paper
classification astro-ph.IM
keywords interferencemeerkattypicalchannelizeddataexcessflaggermitigation
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We present Tricolour, a package for Radio Frequency Interference mitigation of wideband finely channelized MeerKAT correlation data. The MeerKAT passband is heavily affected by interference from satellite, mobile, aircraft and terrestrial transponders. Coupled with typical data rates in excess of 100 GiB/hr at 208kHz channelization resolution, mitigation poses a significant processing challenge. Our flagger is highly configurable, parallel and optimized, employing Dask and Numba technologies to implement the widely used SumThreshold and MAD interference detection algorithms. We find that typical 208kHz channelized datasets can be processed at rates in excess of 400 GiB/hr for a typical L-band flagging strategy on a modern dual-socket Intel Xeon server.

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Cited by 6 Pith papers

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