Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done using the HEASARC data.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
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BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Sun Jun 14 02:42:48 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger446674
======================================================================
Trigger: 00446674 Segment: 000
BAT Trigger Time: 320187425.92 [s; MET]
Trigger Stop: 320187427.968 [s; MET]
UTC: 2011-02-23T20:56:59.226720 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 345.599224203527 Dec: 87.5675078814022 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.37
Image Trigger?: NO
Rate S/N Ratio: 9.89949493661167 [ if not an image trigger ]
Image S/N Ratio: 7.37
Analysis Position: [ source = BAT ]
RA: 345.599224203527 Dec: 87.5675078814022 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 345.477174596784 Dec: 87.588203667138 [deg; J2000]
{ 23h 01m 54.5s , +87d 35' 17.5" }
+/- 2.50700517246376 [arcmin] (estimated 90% radius based on SNR)
+/- 1.73983045137516 [arcmin] (formal 1-sigma fit error)
SNR: 8.18269988308016
Angular difference between the analysis and refined position is 1.279732 arcmin
Partial Coding Fraction: 0.6015625 [ including projection effects ]
Duration
T90: 7 +/- 2.23606797749979
Measured from: 0.0799999833106995
to: 7.0799999833107 [s; relative to TRIGTIME]
T50: 4 +/- 2
Measured from: 0.0799999833106995
to: 4.0799999833107 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.0799999833106995
to: 1.0799999833107 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.0799999833106995
to: 8.0799999833107 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.077786 0.118965 0.070202 0.007867
0.017963 0.018682 0.016882 0.015137 [error]
Peak 0.023225 0.029818 0.026211 0.004813
0.006644 0.006775 0.006307 0.005627 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 8.000 0.080 8.080
T90 7.000 0.080 7.080
T50 4.000 0.080 4.080
Peak 1.000 0.080 1.080
====== Spectral Analysis Summary =====================================
Model : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index : photon index: E^{Ph_index}
Ph_90err : 90% error of the photon index
Epeak : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm : normalization at 50 keV in both the PL model and CPL model
Nomr_90err : 90% error of the normalization
chi2 : Chi-Squared
dof : degree of freedo
=== Time-averaged spectral analysis ===
(Best model with acceptable fit: PL)
Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof
PL -1.583 -0.335 0.322 - - - 2.22e-03 -4.73e-04 4.63e-04 40.020 57
CPL -0.671 -1.306 1.709 65.158 -21.347 -65.158 7.09e-03 -7.09e-03 5.63e-02 38.500 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: PL)
Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof
PL -1.664 -0.492 0.441 - - - 4.73e-03 -1.42e-03 1.36e-03 52.800 57
CPL -0.820 -1.425 2.370 68.920 N/A N/A 1.28e-02 N/A N/A 52.030 56
=== Fluence/Peak Flux Summary ===
Model Band1 Band2 Band3 Band4 Band5 Total
15-25 25-50 50-100 100-350 15-150 15-350 keV
Fluence PL 2.45e-08 4.29e-08 5.72e-08 1.56e-07 1.67e-07 2.81e-07 erg/cm2
90%_error_low -6.89e-09 -8.28e-09 -1.58e-08 -7.26e-08 -3.77e-08 -9.06e-08 erg/cm2
90%_error_hi 7.27e-09 8.26e-09 1.60e-08 1.06e-07 3.89e-08 1.18e-07 erg/cm2
Peak flux PL 2.28e-01 2.08e-01 1.31e-01 1.27e-01 6.20e-01 6.94e-01 ph/cm2/s
90%_error_low -8.41e-02 -5.38e-02 -5.00e-02 -7.46e-02 -1.59e-01 -1.84e-01 ph/cm2/s
90%_error_hi 9.21e-02 5.36e-02 5.01e-02 1.17e-01 1.59e-01 1.88e-01 ph/cm2/s
Fluence CPL 2.23e-08 4.79e-08 5.73e-08 4.07e-08 1.52e-07 1.68e-07 erg/cm2
90%_error_low -7.87e-09 -1.08e-08 -1.95e-08 N/A -3.99e-08 -5.45e-08 erg/cm2
90%_error_hi 8.01e-09 1.15e-08 1.83e-08 N/A 4.33e-08 1.58e-07 erg/cm2
Peak flux CPL 1.98e-01 2.26e-01 1.41e-01 5.62e-02 6.02e-01 6.19e-01 ph/cm2/s
90%_error_low -1.98e-01 -6.34e-02 -5.65e-02 -5.62e-02 -1.63e-01 -1.76e-01 ph/cm2/s
90%_error_hi 1.08e-01 6.77e-02 6.02e-02 1.06e-01 1.63e-01 1.97e-01 ph/cm2/s
======================================================================
Special notes of this burst