CAPTURE: A continuum imaging pipeline for the uGMRT

((1) National Centre for Radio Astrophysics; Ishwara-Chandra C. H. (1); Pune); Ruta Kale (1); Tata Institute of Fundamental Research

CAPTURE: A continuum imaging pipeline for the uGMRT

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arxiv 2010.00196 v1 pith:YW7E5AIE submitted 2020-10-01 astro-ph.IM astro-ph.COastro-ph.GA

CAPTURE: A continuum imaging pipeline for the uGMRT

Ruta Kale (1) , Ishwara-Chandra C. H. (1) , ((1) National Centre for Radio Astrophysics , Tata Institute of Fundamental Research , Pune) This is my paper

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We present the first fully automated pipeline for making images from the interferometric data obtained from the upgraded Giant Metrewave Radio Telescope (uGMRT) called CAsa Pipeline-cum-Toolkit for Upgraded Giant Metrewave Radio Telescope data REduction - CAPTURE. It is a python program that uses tasks from the NRAO Common Astronomy Software Applications (CASA) to perform the steps of flagging of bad data, calibration, imaging and self-calibration. The salient features of the pipeline are: i) a fully automatic mode to go from the raw data to a self-calibrated continuum image, ii) specialized flagging strategies for short and long baselines that ensure minimal loss of extended structure, iii) flagging of persistent narrow band radio frequency interference (RFI), iv) flexibility for the user to configure the pipeline for step-by-step analysis or special cases and v) analysis of data from the legacy GMRT. CAPTURE is available publicly on github (https://github.com/ruta-k/uGMRT-pipeline, release v1.0.0). The primary beam correction for the uGMRT images produced with CAPTURE is made separately available at https://github.com/ruta-k/uGMRTprimarybeam. We show examples of using CAPTURE on uGMRT and legacy GMRT data. In principle, CAPTURE can be tailored for use with radio interferometric data from other telescopes.

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