TITLE: GCN CIRCULAR NUMBER: 30362 SUBJECT: GRB 210702A: CALET Gamma-Ray Burst Monitor detection DATE: 21/07/03 09:28:11 GMT FROM: Valentin Pal'shin at AGU K. Yamaoka (Nagoya U), A. Yoshida, T. Sakamoto, V. Pal'shin, S. Sugita (AGU), Y. Kawakubo (LSU), S. Nakahira (RIKEN), Y. Asaoka (ICRR), S. Torii, Y. Akaike, K. Kobayashi (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U), N. Cannady (GSFC/UMBC), M. L. Cherry (LSU), S. Ricciarini (U of Florence), P. S. Marrocchesi (U of Siena), and the CALET collaboration: The long bright GRB 210702A (Swift detection: Lien et al., GCN Circ. 30351; https://gcn.gsfc.nasa.gov/other/210702A.gcn3) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 19:07:06.474 UTC on 2 July 2021 (http://cgbm.calet.jp/cgbm_trigger/flight/1309287819/index.html). The burst signal was seen by all CGBM detectors. The burst light curve shows a FRED-like pulse which starts at T+2.1 sec, peaks at T+6.3 sec,and ends at T+51.3 sec. The T90 and T50 durations measured by the SGM data are 32.1 +- 4.6 sec and 9.2 +- 0.9 sec (40-1000 keV), respectively. The ground processed light curve is available at http://cgbm.calet.jp/cgbm_trigger/ground/1309287819/ The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at the Waseda University.