{
  "bibcode": "2023GCN.33236....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 short GRB 230129A which was \nalso detected by Fermi GBM (GCN Circ. 33232).\n\nThe source was faintly detected in the 20-200 keV energy range. The \nlight curve peaks at 2023-01-29 06:05:21.15 UTC. The measured peak count \nrate associated with the burst is 300 (+148, -38) counts/s above the \nbackground in the combined data of all quadrants, with a total of 161 \n(+48, -54) counts. The local mean background count rate was 319 (+7, \n-12) counts/s. Using cumulative rates, we measure a T90 of 0.78 (+0.37, \n-0.36) s. We note that the T90 measurement may be a slight underestimate \ndue to the limited number of photons detected from the burst.\n\nIt was also clearly detected in the CsI anticoincidence (Veto) detector \nin the 100-500 keV energy range.\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": 33236,
  "createdOn": 1675095528000,
  "email": "gauravwaratkar@iitb.ac.in",
  "subject": "GRB 230129A: AstroSat CZTI detection",
  "submitter": "Gaurav Waratkar at IIT,Bombay  <gauravwaratkar@iitb.ac.in>",
  "eventId": "GRB 230129A"
}