! Swift/XRT hardness ratio of trigger: 361489, name: GRB 090831C ! T0 for this burst is Swift MET=273447030.976 s, = 2009 Aug 31 at 21:30:25.930 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 168.607 17.218 -40.450 2.693939 0.403412 203.537 24.913 -17.711 3.185347 0.513892 302.843 116.162 -74.393 0.595048 0.106643 485.329 89.129 -66.324 0.524522 0.109926 840.838 360.446 -266.380 0.113867 0.017631 5594.959 1392.824 -1147.079 0.013073 0.002917 11545.478 1225.730 -1319.401 0.011725 0.002694 24346.403 23136.409 -8212.410 0.005246 0.000968 NO NO NO NO NO ! PC -- soft data !Time Err (pos) Err(neg) Rate Error 168.607 17.218 -40.450 1.188034 0.267205 203.537 24.913 -17.711 1.728619 0.378788 302.843 116.162 -74.393 0.371759 0.084353 485.329 89.129 -66.324 0.451775 0.102358 840.838 360.446 -266.380 0.113154 0.019568 5594.959 1392.824 -1147.079 0.009240 0.002489 11545.478 1225.730 -1319.401 0.011303 0.002657 24346.403 23136.409 -8212.410 0.002528 0.000734 NO NO NO NO NO ! PC -- hardness ratio data !Time Err (pos) Err(neg) Rate Error 168.607 17.218 -40.450 2.267560 0.612705 203.537 24.913 -17.711 1.842712 0.501421 302.843 116.162 -74.393 1.600630 0.462810 485.329 89.129 -66.324 1.161026 0.358331 840.838 360.446 -266.380 1.006296 0.233584 5594.959 1392.824 -1147.079 1.414774 0.494804 11545.478 1225.730 -1319.401 1.037316 0.340962 24346.403 23136.409 -8212.410 2.074988 0.713886