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Data quality up to the third observing run of Advanced LIGO: Gravity Spy glitch classifications

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arxiv 2208.12849 v2 pith:BNAWTFGQ submitted 2022-08-26 gr-qc astro-ph.IM

J. Glanzer , S. Banagiri , S. B. Coughlin , S. Soni , M. Zevin , C. P. L. Berry , O. Patane , S. Bahaadini
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N. Rohani K. Crowston V. Kalogera C. {O}sterlund A. Katsaggelos
This is my paper · ORCID
classification gr-qcastro-ph.IM
keywords glitchesligodatagravitational-wavegravityadvancedclassifynoise
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Understanding the noise in gravitational-wave detectors is central to detecting and interpreting gravitational-wave signals. Glitches are transient, non-Gaussian noise features that can have a range of environmental and instrumental origins. The Gravity Spy project uses a machine-learning algorithm to classify glitches based upon their time-frequency morphology. The resulting set of classified glitches can be used as input to detector-characterisation investigations of how to mitigate glitches, or data-analysis studies of how to ameliorate the impact of glitches. Here we present the results of the Gravity Spy analysis of data up to the end of the third observing run of Advanced LIGO. We classify 233981 glitches from LIGO Hanford and 379805 glitches from LIGO Livingston into morphological classes. We find that the distribution of glitches differs between the two LIGO sites. This highlights the potential need for studies of data quality to be individually tailored to each gravitational-wave observatory.

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  1. PINCH: Pipeline-Informed Noise Characterization in LIGO's Third Observing Run

    gr-qc 2025-05 conditional novelty 6.0 of 10

    PINCH uses support vector machines trained on clean GstLAL triggers to identify glitch-induced triggers, revealing class-specific patterns in how transient noise contaminates LIGO's third observing run.

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