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Swift-XRT spectra of GRB 121001A

Last updated after receiving ObsID 00535026001, version 7.

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Time-averaged spectrum (T0 + 127 to 59555 s)

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WT and PC mode spectra of GRB 121001A

WT mode. Mean photon arrival: T0+170 s

N_H (Galactic)	4.5 × 10²¹ cm^-2
N_H (intrinsic)	3.5 (+3.7, -3.2) × 10²¹ cm^-2
z of absorber	0
Photon index	1.31 (+0.36, -0.35)
Flux (0.3-10 keV) (Observed)	3.64 (+0.62, -0.54) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.81 (+0.85, -0.62) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	7.1 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	9.3 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	184.03 (254)
Exposure time	93 s

PC mode. Mean photon arrival: T0+3724 s

N_H (Galactic)	4.5 × 10²¹ cm^-2
N_H (intrinsic)	3.5 (+3.1, -2.5) × 10²¹ cm^-2
z of absorber	0
Photon index	1.27 (+0.30, -0.28)
Flux (0.3-10 keV) (Observed)	8.2 (+1.2, -1.0) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.068 (+0.139, -0.095) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	7.8 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.0 × 10^-10 erg cm^-2 ct^-1
C-stat (dof)	242.96 (282)
Exposure time	9.1 ks

Late Time spectrum (T0 + 5165 to 59555 s)

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PC mode spectrum of GRB 121001A

PC mode. Mean photon arrival: T0+8830 s

N_H (Galactic)	4.5 × 10²¹ cm^-2
N_H (intrinsic)	3.0 (+4.6, -3.0) × 10²¹ cm^-2
z of absorber	0
Photon index	1.53 (+0.51, -0.46)
Flux (0.3-10 keV) (Observed)	1.56 (+0.40, -0.31) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.24 (+0.80, -0.41) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	6.6 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	9.5 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	110.39 (129)
Exposure time	7.4 ks