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Swift-XRT spectra of GRB 170331A

Last updated after receiving ObsID 00744791001, version 9

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 127 to 19246 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+133 s

N_H (Galactic)	4.65 × 10²⁰ cm^-2
N_H (intrinsic)	3 (+5, -3) × 10²¹ cm^-2
z of absorber	0
Photon index	3.0 (+2.3, -1.2)
Flux (0.3-10 keV) (Observed)	7.3 (+5.2, -2.8) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.4 (+7.2, -0.8) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.28 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.36 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	15.40 (25)
Spectrum exposure	12 s

PC mode. Mean photon arrival: T0+2940 s

N_H (Galactic)	4.65 × 10²⁰ cm^-2
N_H (intrinsic)	5.6 (+2.0, -1.7) × 10²¹ cm^-2
z of absorber	0
Photon index	2.5 (+0.4, -0.3)
Flux (0.3-10 keV) (Observed)	1.52 (+0.27, -0.22) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.67 (+1.60, -0.65) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.36 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.11 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	132.87 (163)
Spectrum exposure	7.4 ks

Late Time spectrum (T0 + 5543 to 19246 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+9340 s

N_H (Galactic)	4.65 × 10²⁰ cm^-2
N_H (intrinsic)	7 (+5, -4) × 10²¹ cm^-2
z of absorber	0
Photon index	2.9 (+1.0, -0.8)
Flux (0.3-10 keV) (Observed)	4.3 (+1.7, -1.1) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.7 (+4.7, -0.3) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	2.87 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.17 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	51.45 (56)
Spectrum exposure	5.5 ks