{
  "bibcode": "2023GCN.33235....1N",
  "body": "P K. Navaneeth (IUCAA), R. Gopalakrishnan (IUCAA), G. Waratkar (IITB), \nA. Vibhute (IUCAA), V. Bhalerao (IITB), D. Bhattacharya (Ashoka \nUniversity/IUCAA), A. R. Rao (IUCAA/TIFR), and S. Vadawale (PRL) report \non behalf of the AstroSat CZTI collaboration:\n\nAnalysis of AstroSat CZTI data with the CIFT framework (Sharma et al., \n2021, JApA, 42, 73) showed the detection of a long GRB230128A which was \nalso detected by Fermi GBM (GCN Circ. 33231).\n\nIt was clearly detected in the CsI anticoincidence (Veto) detector in \nthe 100-500 keV energy range. The light curve peaks at 2023-01-28 \n22:48:33.09 UTC. The measured peak count rate is 669 (+68, -52) counts/s \nabove the background in the combined Veto data of all quadrants, with a \ntotal of 9446 (+1558, -2165) counts. The local mean background count \nrate was 2912 (+3, -5) counts/s. We measure a T90 of 53 (+12, -16) s \nfrom the cumulative Veto light curve.\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, URSC, IUCAA, SAC, \nand PRL. The Indian Space Research Organisation funded, managed, and \nfacilitated the project.",
  "circularId": 33235,
  "createdOn": 1675070527000,
  "email": "gauravwaratkar@iitb.ac.in",
  "subject": "GRB 230128A: AstroSat CZTI detection",
  "submitter": "Gaurav Waratkar at IIT,Bombay  <gauravwaratkar@iitb.ac.in>",
  "eventId": "GRB 230128A"
}