! Swift/XRT lightcurve of trigger: 1344131, name: GRB 250821A ! T0 for this burst is Swift MET=777466013.504 s, = 2025 Aug 21 at 10:46:17.308 UT ! Data covers 0.3-10 keV ! The data are in 5 columns: "; ! time, time error (+ve), time error (-ve), source count-rate, source error ! For a detailed description of light curve production, see Evans et al. 2007 (A&A, 469, 379 ) ! For a detailed description of the file, see ! http://www.swift.ac.uk/xrt_curves/docs.php ! This lightcurve was obtained from http://www.swift.ac.uk/xrt_curves/01344131 ! BINMODE: READ TERR 1 2 ! PC data !Time T_+ve T_-ve Rate Ratepos Rateneg 191.562 56.489 -41.296 2.551575e-01 5.735269e-02 -5.735269e-02 309.770 58.633 -61.719 2.074668e-01 4.680753e-02 -4.680753e-02 419.775 46.413 -51.373 2.537761e-01 5.687259e-02 -5.687259e-02 529.102 107.584 -62.914 1.447490e-01 3.278011e-02 -3.278011e-02 724.891 137.453 -88.205 9.722523e-02 2.324176e-02 -2.324176e-02 1898.162 43482.774 -1035.819 2.954245e-03 6.983812e-04 -6.983812e-04 NO NO NO NO NO ! PC upper limits 146674.288 62191.377 -50985.573 1.4538e-03 0.0000e+00 0.0000e+00