{
  "eventId": "GRB 260525A",
  "submitter": "Anuraag Arya at IIT Bombay <aryaanuraag910@gmail.com>",
  "bibcode": "2026GCN.44711....1S",
  "subject": "GRB 260525A: AstroSat CZTI detection",
  "body": "S. Salunke (IUCAA), M. Tembhurnikar (IUCAA), Harsha K. H. (IUCAA), A. Goyal (IITB), A. Arya (IITB), G. Waratkar (Caltech/IITB), A. Vibhute (IUCAA), V. Bhalerao (IITB), 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 long GRB 260525A which was also detected by  Fermi/GBM (Fermi GBM team, GCN Circ. 44703).\n \nThe source was clearly detected in the CZT detectors in the 20-200 keV energy range. The light curve peaks at 2026-05-25 23:33:44.45 UTC. The measured peak count rate associated with the burst is 209 (+36, -36) counts/s above the background in the combined data of four quadrants, with a total of 259 (+56, -54) counts. The local mean background count rate was 728 (+177, -140) counts/s. Using cumulative rates, we measure a T90 of 8 (+2, -2) s. \n\nThe source was also faintly 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: https://astrosat.iucaa.in/cift/cift_products/517448022.55/S517448022.55_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: http://astrosat.iucaa.in/czti/?q=grb",
  "submittedHow": "web",
  "format": "text/plain",
  "createdOn": 1779863926640,
  "circularId": 44711
}