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GRANDWin: Gain-based Radio-frequency Interference Analysis Using Normalized Deviation with Winsorization for MWA Ultralow-frequency Calibration Data

  • Authors: Wildan Hidayat, Shintaro Yoshiura, Keitaro Takahashi, Cathryn M. Trott, D. Null, C. D. Nunhokee

Wildan Hidayat et al 2026 The Astrophysical Journal 1006 .

  • Provider: AAS Journals

Caption: Figure 1.

Processing pipelines for simulated data (left) and observation data (right). The simulated data pipeline simulates visibilities, adds system temperature and RFI of varying intensities, and detects outliers from gain-calibration solutions using winsorizing, which is evaluated using FP, TP, and F1 scores. The observation pipeline performs calibration, outlier detection using the gain-calibration solutions, additional flagging, and recalibration. Then it images the data with WSClean to construct power spectra for evaluation.

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