{
  "submittedHow": "web",
  "body": "S. Puri (IITB), A. Goyal (IITB), A. Arya (IITB), S. Salunke (IUCAA), Harsha K. H. (IUCAA), G. Waratkar (Caltech/IITB), V. Bhalerao (IITB),  A. Vibhute (IUCAA), D. Bhattacharya (Ashoka University/IUCAA), A. R. Rao (IUCAA/TIFR), and S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration:\n\nAnalysis of AstroSat CZTI data with the CIFT framework (Sharma et al., 2021, JApA, 42, 73) showed the detection of a GRB 261029B which was also detected by  Fermi (Fermi GBM Team, GCN Circ. 46075).\n\nThe source was detected in the CZT detectors in the 20-200 keV energy range. The light curve peaks at 2026-10-29 02:24:10.84 UTC. The measured peak count rate associated with the burst is 452 (+158, -164) counts/s above the background in the combined data of two quadrants (out of four), with a total of 72 (+38, -39) counts. The local mean background count rate was 119 (+6, -10) counts/s. We measure a T90 of 0.72 (+0.36, -0.56) s from the cumulative CZT light curve.\n\nThe source was also detected in the CsI anticoincidence (Veto) detector in the 100-500 keV energy range.\n\nCZTI data products like interactive and downloadable light curves for this GRB can be found at: \nhttps://astrosat.iucaa.in/cift/cift_products/ET20261029T022410/ET20261029T022410_details.html\n\nCZTI is built by a TIFR-led consortium of institutes across India, including VSSC, URSC, IUCAA, SAC, and PRL. The Indian Space Research Organisation funded, managed, and facilitated the project.\n\nCZTI GRB detections are reported regularly on the payload site at:\nhttp://astrosat.iucaa.in/czti/?q=grb",
  "eventType": [
    "GRB",
    "Gamma-ray Transient",
    "X-ray Transient"
  ],
  "format": "text/plain",
  "circularId": 46091,
  "submitter": "ABHINAV GOYAL at Indian Institute of Technology Bombay <abhigoyale2003@gmail.com>",
  "subject": "GRB 261029B : AstroSat CZTI detection",
  "eventId": "GRB 261029B",
  "createdOn": 1793282276542
}