{
  "bibcode": "2022GCN.32028....1G",
  "body": "R. Gopalakrishnan (IUCAA), V. Prasad (IUCAA), G. Waratkar (IITB), A. \nVibhute (IUCAA), V. Bhalerao (IITB), D. Bhattacharya (IUCAA), A. R. Rao \n(IUCAA/TIFR), and S. Vadawale (PRL) report on behalf of the AstroSat \nCZTI collaboration:\n\nAnalysis of AstroSat CZTI data with the CIFT framework (Sharma et al., \n2021, JApA, 42, 73) showed detection of GRB 220511A which was also \nreported by Fermi GBM (GCN #32018), AGILE (Ursi et al., GCN #32021), and \nSwift/BAT-GUANO (DeLaunay et al., GCN #32023).\n\nThe source was clearly detected in the 20-200 keV energy range. The \nlight curve peaked at 2022-05-11 13:41:57.45 UT. The measured peak count \nrate associated with the burst is  802 (+197, -74) counts/s above the \nbackground in the combined data of four quadrants, with a total of 1126 \n(+156, -184) counts. The local mean background count rate was 525 (+9, \n-9) counts/s. Using cumulative rates, we measure a T90 of 1.8 (+0.8, \n-0.4) s.\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, ISAC, IUCAA, SAC, \nand PRL. The Indian Space Research Organisation funded, managed, and \nfacilitated the project.",
  "circularId": 32028,
  "createdOn": 1652355217000,
  "email": "gauravwaratkar@iitb.ac.in",
  "subject": "GRB 220511A: AstroSat CZTI detection",
  "submitter": "Gaurav Waratkar at IIT,Bombay  <gauravwaratkar@iitb.ac.in>",
  "eventId": "GRB 220511A"
}