! 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 flux, 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 Flux Fluxpos Fluxneg 191.562 56.489 -41.296 1.0512489e-11 2.362930828e-12 -2.362930828e-12 309.770 58.633 -61.719 8.54763216e-12 1.928470236e-12 -1.928470236e-12 419.775 46.413 -51.373 1.045557532e-11 2.343150708e-12 -2.343150708e-12 529.102 107.584 -62.914 5.9636588e-12 1.350540532e-12 -1.350540532e-12 724.891 137.453 -88.205 4.005679476e-12 9.57560512e-13 -9.57560512e-13 1898.162 43482.774 -1035.819 1.21714894e-13 2.877330544e-14 -2.877330544e-14 NO NO NO NO NO ! PC upper limits 146674.288 62191.377 -50985.573 5.989656e-14 0 0