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: Fri Jan 17 17:56:21 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger425151
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Trigger: 00425151 Segment: 000
BAT Trigger Time: 298782218.752 [s; MET]
Trigger Stop: 298782219.776 [s; MET]
UTC: 2010-06-21T03:03:32.840140 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 315.308020107616 Dec: -51.0864237917052 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 18.67
Image Trigger?: NO
Rate S/N Ratio: 58.7537232862735 [ if not an image trigger ]
Image S/N Ratio: 18.67
Analysis Position: [ source = BAT ]
RA: 315.308020107616 Dec: -51.0864237917052 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 315.309092390252 Dec: -51.1023517510873 [deg; J2000]
{ 21h 01m 14.2s , -51d 06' 08.5" }
+/- 0.503316638038972 [arcmin] (estimated 90% radius based on SNR)
+/- 0.112951456530024 [arcmin] (formal 1-sigma fit error)
SNR: 81.1071980715528
Angular difference between the analysis and refined position is 0.956531 arcmin
Partial Coding Fraction: 0.9765625 [ including projection effects ]
Duration
T90: 63.5519999265671 +/- 1.7075502970681
Measured from: 1.216000020504
to: 64.7679999470711 [s; relative to TRIGTIME]
T50: 25.7599999904633 +/- 0.703659018375438
Measured from: 17.9160000085831
to: 43.6759999990463 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 24.4640000462532
to: 25.4640000462532 [s; relative to TRIGTIME]
Total Fluence
Measured from: -6.09999996423721
to: 204.284000039101 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 14.200694 14.645488 8.395227 1.628453
0.093607 0.095211 0.081402 0.064791 [error]
Peak 0.438457 0.633156 0.450316 0.071301
0.010801 0.012574 0.011135 0.006423 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 210.384 -6.100 204.284
T90 63.552 1.216 64.768
T50 25.760 17.916 43.676
Peak 1.000 24.464 25.464
====== 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 -1.896 -0.030 0.030 - - - 1.06e-02 -1.55e-04 1.55e-04 46.460 57
CPL -1.812 -0.101 0.123 129.012 -44.238 -129.012 1.15e-02 -1.01e-03 1.45e-03 45.050 56
=== 1-s peak 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 -1.574 -0.047 0.047 - - - 1.03e-01 -2.71e-03 2.71e-03 71.210 57
CPL -0.946 -0.205 0.214 90.632 -10.613 18.579 2.02e-01 -3.91e-02 5.12e-02 41.400 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 4.15e-06 5.99e-06 6.44e-06 1.29e-05 2.06e-05 2.94e-05 erg/cm2
90%_error_low -1.37e-07 -1.12e-07 -1.10e-07 -5.21e-07 -3.00e-07 -5.52e-07 erg/cm2
90%_error_hi 1.39e-07 1.12e-07 1.10e-07 5.36e-07 3.00e-07 5.60e-07 erg/cm2
Peak flux PL 4.55e+00 4.38e+00 2.94e+00 3.09e+00 1.31e+01 1.50e+01 ph/cm2/s
90%_error_low -2.24e-01 -1.31e-01 -9.38e-02 -2.01e-01 -3.74e-01 -3.93e-01 ph/cm2/s
90%_error_hi 2.28e-01 1.31e-01 9.35e-02 2.10e-01 3.75e-01 3.93e-01 ph/cm2/s
Fluence CPL 4.04e-06 6.00e-06 6.48e-06 1.17e-05 2.04e-05 2.82e-05 erg/cm2
90%_error_low -1.97e-07 -1.13e-07 -1.26e-07 -1.49e-06 -3.56e-07 -1.58e-06 erg/cm2
90%_error_hi 2.00e-07 1.13e-07 1.27e-07 1.35e-06 3.56e-07 1.49e-06 erg/cm2
Peak flux CPL 3.91e+00 4.53e+00 3.12e+00 1.76e+00 1.26e+01 1.33e+01 ph/cm2/s
90%_error_low -2.85e-01 -1.45e-01 -1.12e-01 -2.78e-01 -4.02e-01 -5.15e-01 ph/cm2/s
90%_error_hi 2.91e-01 1.46e-01 1.13e-01 3.35e-01 4.04e-01 5.45e-01 ph/cm2/s
======================================================================