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 Jan 4 09:32:41 EST 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger621915
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Trigger: 00621915 Segment: 000
BAT Trigger Time: 440748185.6 [s; MET]
Trigger Stop: 440748186.624 [s; MET]
UTC: 2014-12-20T06:02:52.659420 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 195.049884054191 Dec: 32.1436131040692 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 15.59
Image Trigger?: NO
Rate S/N Ratio: 48.2078831727758 [ if not an image trigger ]
Image S/N Ratio: 15.59
Analysis Position: [ source = BAT ]
RA: 195.049884054191 Dec: 32.1436131040692 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 195.05764349687 Dec: 32.1470666399717 [deg; J2000]
{ 13h 00m 13.8s , +32d 08' 49.4" }
+/- 1.12645970885531 [arcmin] (estimated 90% radius based on SNR)
+/- 0.359279991173662 [arcmin] (formal 1-sigma fit error)
SNR: 25.6589489150577
Angular difference between the analysis and refined position is 0.445339 arcmin
Partial Coding Fraction: 0.1972656 [ including projection effects ]
Duration
T90: 7.23199993371964 +/- 0.479015658049012
Measured from: -0.424000024795532
to: 6.8079999089241 [s; relative to TRIGTIME]
T50: 3.06399995088577 +/- 1.30083050676259
Measured from: 0.35999995470047
to: 3.42399990558624 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.128000020980835
to: 0.871999979019165 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.90800005197525
to: 7.2960000038147 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.657405 1.199131 1.274516 0.412260
0.052709 0.059743 0.055899 0.041703 [error]
Peak 0.144199 0.350898 0.451093 0.177381
0.020739 0.026769 0.027535 0.019597 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 8.204 -0.908 7.296
T90 7.232 -0.424 6.808
T50 3.064 0.360 3.424
Peak 1.000 -0.128 0.872
====== 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: CPL)
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 -1.304 -0.083 0.083 - - - 3.22e-02 -1.63e-03 1.63e-03 64.410 57
CPL -0.615 -0.366 0.399 116.098 -22.886 64.670 6.53e-02 -2.00e-02 3.15e-02 53.420 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: N/A)
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 -1.050 -0.119 0.121 - - - 7.74e-02 -5.98e-03 5.96e-03 81.370 57
CPL -0.249 -0.536 0.611 128.642 -32.163 133.958 1.75e-01 -7.21e-02 1.41e-01 74.560 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 2.80e-07 5.81e-07 9.42e-07 3.43e-06 2.61e-06 5.23e-06 erg/cm2
90%_error_low -2.70e-08 -3.51e-08 -5.27e-08 -3.99e-07 -1.35e-07 -4.31e-07 erg/cm2
90%_error_hi 2.79e-08 3.49e-08 5.25e-08 4.31e-07 1.36e-07 4.56e-07 erg/cm2
Peak flux PL 4.14e-04 5.08e-03 5.68e-02 5.44e+00 2.55e-01 5.45e+00 ph/cm2/s
90%_error_low -1.68e-06 2.72e-05 1.04e-03 -4.17e-01 6.64e-03 -3.61e-01 ph/cm2/s
90%_error_hi 2.06e-04 2.32e-03 2.38e-02 1.07e+00 1.03e-01 1.18e+00 ph/cm2/s
Fluence CPL 2.36e-07 6.09e-07 1.02e-06 1.64e-06 2.56e-06 3.51e-06 erg/cm2
90%_error_low -3.39e-08 -3.95e-08 -6.72e-08 -4.77e-07 -1.41e-07 -4.82e-07 erg/cm2
90%_error_hi 3.50e-08 4.00e-08 6.82e-08 7.30e-07 1.40e-07 7.18e-07 erg/cm2
Peak flux CPL 1.68e+00 2.86e+00 2.95e+00 2.40e+00 8.79e+00 9.89e+00 ph/cm2/s
90%_error_low -3.75e-01 -2.95e-01 -2.87e-01 -7.77e-01 -7.19e-01 -1.07e+00 ph/cm2/s
90%_error_hi 3.98e-01 2.98e-01 2.91e-01 1.23e+00 7.20e-01 1.35e+00 ph/cm2/s
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