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Swift-XRT spectra of GRB 241228B

Last updated after receiving ObsID 00021750001, version 4

Data were analysed using HEASOFT version 6.32

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Time-averaged spectrum (T0 + 39995 to 41805 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+41035 s

NH (Galactic)2.90 × 1020 cm-2
NH (intrinsic)10.0 (+155.5, -10.0) × 1019 cm-2
z of absorber0
Photon index1.4 (+0.5, -0.3)
Flux (0.3-10 keV)
(Observed)		2.7 (+0.9, -0.8) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)		2.8 (+0.8, -0.7) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.83 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.02 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?		56.78 (53)
Spectrum exposure1.8 ks