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Swift-XRT spectra of GRB 250331B

Last updated after receiving ObsID 01299965001, version 12

Data were analysed using HEASOFT version 6.35.2

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Add time-sliced spectrum.

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 321 to 35118 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+4400 s

N_H (Galactic)	6.56 × 10²¹ cm^-2
N_H (intrinsic)	1.4 (+1.5, -1.1) × 10²² cm^-2
z of absorber	0
Photon index	2.2 (+0.9, -0.8)
Flux (0.3-10 keV) (Observed)	1.7 (+0.6, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.4 (+11.5, -1.8) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	5.86 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.50 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	67.67 (66)
Spectrum exposure	5.5 ks

Late Time spectrum (T0 + 5920 to 35118 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+15146 s

N_H (Galactic)	6.56 × 10²¹ cm^-2
N_H (intrinsic)	5.5 (+29.4, -5.5) × 10²¹ cm^-2
z of absorber	0
Photon index	1.2 (+1.7, -1.0)
Flux (0.3-10 keV) (Observed)	4.9 (+4.1, -2.4) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.3 (+12.0, -2.6) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	8.17 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.05 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	9.07 (16)
Spectrum exposure	4.7 ks