[vsnet-grb-info 18785] GRB 161202A: Astrosat CZTI detection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  20235
SUBJECT: GRB 161202A: Astrosat CZTI detection
DATE:    16/12/05 07:58:12 GMT
FROM:    Vidushi Sharma at IUCAA  <vidushi at iucaa.in>

V. Sharma, V. Bhalerao and D. Bhattacharya (IUCAA), A. R. Rao (TIFR) and S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration:

Analysis of AstroSat CZTI data showed clear detection of a long duration GRB161202A (Swift detection: B. Sbarufatti et al., GCN Circ. 20227) 
in the 40-200 keV energy range. The light curve shows a multiple peak structure with main peak at 23:11:50 UT, 62 secs before the Swift BAT 
trigger(consistent with GCN 20233). The measured peak count rate is 230.75 counts/sec above the background in combined data of four quadrants, 
with a total of 1432.98 counts. The local mean background count rate was 345.25 counts/sec. Using cumulative rates, we measure a T90 of 75.25 
sec.

CZTI GRB detections are reported regularly on the payload site at http://astrosat.iucaa.in/czti/?q=grb. CZTI is built by a TIFR-led consortium
of institutes across India, including VSSC, ISAC, IUCAA, SAC and PRL. The Indian Space Research Organisation funded, managed and facilitated 
the project.