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Swift-XRT spectra of GRB 120401A

Last updated after receiving ObsID 00519043002, version 13.

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Time-averaged spectrum (T0 + 124 to 53676 s)

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WT and PC mode spectra of GRB 120401A

WT mode. Mean photon arrival: T0+306 s

N_H (Galactic)	3.2 × 10²⁰ cm^-2
N_H (intrinsic)	9.1 (+1.3, -1.3) × 10²⁰ cm^-2
z of absorber	0
Photon index	2.232 (+0.064, -0.061)
Flux (0.3-10 keV) (Observed)	4.76 (+0.15, -0.14) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.93 (+0.19, -0.25) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.0 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.4 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	589.00 (609)
Exposure time	500 s

PC mode. Mean photon arrival: T0+3488 s

N_H (Galactic)	3.2 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+2.2 × 10²⁰, -0) cm^-2
z of absorber	0
Photon index	1.711 (+0.162, -0.072)
Flux (0.3-10 keV) (Observed)	2.19 (+0.19, -0.22) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.35 (+0.17, -0.11) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.1 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.4 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	271.29 (290)
Exposure time	18.9 ks

Late Time spectrum (T0 + 5009 to 53676 s)

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PC mode spectrum of GRB 120401A

PC mode. Mean photon arrival: T0+15294 s

N_H (Galactic)	3.2 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+5.1 × 10²⁰, -0) cm^-2
z of absorber	0
Photon index	1.86 (+0.42, -0.18)
Flux (0.3-10 keV) (Observed)	2.52 (+0.55, -0.55) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.77 (+0.47, -0.53) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	3.6 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.0 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	90.34 (79)
Exposure time	17.8 ks