! Swift/XRT hardness ratio of trigger: 709357, name: GRB 160821B ! T0 for this burst is Swift MET=493511369.92 s, = 2016 Aug 21 at 22:29:13.175 UT ! The hard band is 1.51-10 keV ! The soft band is 0.3-1.5 keV ! For details of light-curve production, see Evans et al. 2007, A&A, 469, 379 ! There are 3 datasets: Hard, Soft, and the ratio ! Columns are as labelled ! BINMODE: GRB-like (counts) READ TERR 1 READ SERR 2 NO NO NO NO NO ! PC -- hard data !Time Err (pos) Err(neg) Rate Error 637.517 5958.546 -365.136 0.022776 0.005810 17771.750 12393.606 -7155.689 0.005070 0.001092 NO NO NO NO NO ! PC -- soft data !Time Err (pos) Err(neg) Rate Error 637.517 5958.546 -365.136 0.106385 0.014506 17771.750 12393.606 -7155.689 0.003526 0.000949 NO NO NO NO NO ! PC -- hardness ratio data !Time Err (pos) Err(neg) Rate Error 637.517 5958.546 -365.136 0.214094 0.061928 17771.750 12393.606 -7155.689 1.438116 0.495830