! Swift/XRT hardness ratio of trigger: 361830, name: GRB 090904A ! T0 for this burst is Swift MET=273718872 s, = 2009 Sep 04 at 01:01:06.945 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 491.801 40.957 -356.538 0.534051 0.117314 767.498 407.130 -234.739 0.064100 0.013862 5306.988 514.054 -443.738 0.021561 0.005625 6464.472 486.952 -643.430 0.024307 0.005629 11497.133 1234.817 -1178.675 0.015060 0.002884 17232.160 1268.248 -971.044 0.013864 0.003248 23106.334 1198.857 -1362.479 0.010268 0.002476 36607.164 22344.020 -9082.116 0.004343 0.001138 91244.282 60227.495 -28936.746 0.001738 0.000482 NO NO NO NO NO ! PC -- soft data !Time Err (pos) Err(neg) Rate Error 491.801 40.957 -356.538 0.816078 0.144712 767.498 407.130 -234.739 0.158572 0.023632 5306.988 514.054 -443.738 0.021402 0.005587 6464.472 486.952 -643.430 0.035978 0.006986 11497.133 1234.817 -1178.675 0.028166 0.003950 17232.160 1268.248 -971.044 0.018204 0.003698 23106.334 1198.857 -1362.479 0.010769 0.002553 36607.164 22344.020 -9082.116 0.008069 0.001537 91244.282 60227.495 -28936.746 0.002377 0.000573 NO NO NO NO NO ! PC -- hardness ratio data !Time Err (pos) Err(neg) Rate Error 491.801 40.957 -356.538 0.654411 0.184746 767.498 407.130 -234.739 0.404235 0.106163 5306.988 514.054 -443.738 1.007396 0.371797 6464.472 486.952 -643.430 0.675601 0.204183 11497.133 1234.817 -1178.675 0.534674 0.126917 17232.160 1268.248 -971.044 0.761571 0.236139 23106.334 1198.857 -1362.479 0.953480 0.322425 36607.164 22344.020 -9082.116 0.538215 0.174352 91244.282 60227.495 -28936.746 0.731216 0.268840