{
  "bibcode": "2021GCN.29368....1N",
  "body": "D. Nadella (NITK), G. Waratkar (IITB), A. Vibhute (IUCAA), S. Gupta\n(IUCAA), P. Sawant (IUCAA), V. Bhalerao (IITB), D. Bhattacharya (IUCAA),\nA. R. Rao (IUCAA/TIFR), and S. Vadawale (PRL) report on behalf of the\nAstroSat CZTI collaboration: \n\nAnalysis of AstroSat CZTI data with the CIFT framework (Sharma et al,\n2020, arxiv:2011.07067) showed detection of a long GRB 210126A, which\nwas also detected by Fermi-GBM (GCN #29354) and GECAM-B (GCN #29356). \n\nThe source was detected in the 20-200 keV energy range in three\nquadrants (Quadrant A, C, and D). Quadrant D was noisy, and we excluded\nit from further analysis. The light curve showed multiple peaks of\nemission with the strongest peak at 2021-01-26 10:00:07 UT. The measured\npeak count rate associated with the burst is 56 (+9, -10) cts/s above\nthe background in the combined data of two quadrants, with a total of\n1039 (+412, -454) cts. The local mean background count rate was 248 (+1,\n-1) cts/s. Using cumulative rates, we measure a T90 of 67 (+41, -55) s.\nThese large error bars arise from the presence of a weak second peak\nwhose association with the burst is ambiguous in our data. \n\nCZTI GRB detections are reported regularly on the payload site at\nhttp://astrosat.iucaa.in/czti/?q=grb. CZTI is built by a TIFR-led\nconsortium of institutes across India, including VSSC, ISAC, IUCAA, SAC\nand PRL. The Indian Space Research Organisation funded, managed and\nfacilitated the project.",
  "circularId": 29368,
  "createdOn": 1611905946000,
  "email": "gauravwaratkar@iitb.ac.in",
  "subject": "GRB 210126A: AstroSat CZTI detection",
  "submitter": "Gaurav Waratkar at IIT,Bombay  <gauravwaratkar@iitb.ac.in>",
  "eventId": "GRB 210126A"
}