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: Tue May 5 17:26:23 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger635887
======================================================================
Trigger: 00635887 Segment: 000
BAT Trigger Time: 448771768 [s; MET]
Trigger Stop: 448771832 [s; MET]
UTC: 2015-03-23T02:49:14.653860 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 128.191265245984 Dec: 45.4343019594773 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.18
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 10.18
Analysis Position: [ source = BAT ]
RA: 128.191265245984 Dec: 45.4343019594773 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst; manually chosen time period ]
RA: 128.191 Dec: 45.4343 [deg; J2000]
{ 08h 32m 45.8s , +45d 26' 03.5" }
+/- 2.30735244623 [arcmin] (estimated 90% radius based on SNR)
SNR: 9.21384709763
Angular difference between the analysis and refined position is 0.011168 arcmin
Partial Coding Fraction: 0.328125 [ including projection effects ]
Duration
T90: 149.727999925613 +/- 9.12243565164621
Measured from: 3.39600002765656
to: 153.12399995327 [s; relative to TRIGTIME]
T50: 12.7399999499321 +/- 1.04199806984926
Measured from: 124.560000002384
to: 137.299999952316 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 131.587999999523
to: 132.587999999523 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.54000002145767
to: 191.407999992371 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.362431 3.671754 2.393276 0.525772
0.111853 0.116154 0.100387 0.083913 [error]
Peak 0.203833 0.214188 0.131249 0.025997
0.008326 0.008400 0.007195 0.004748 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 192.948 -1.540 191.408
T90 149.728 3.396 153.124
T50 12.740 124.560 137.300
Peak 1.000 131.588 132.588
====== 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 -1.738 -0.075 0.074 - - - 3.14e-03 -1.26e-04 1.26e-04 43.760 57
CPL -1.613 -0.187 0.294 154.878 -76.124 -154.878 3.63e-03 -5.92e-04 1.41e-03 43.180 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 -1.847 -0.091 0.089 - - - 3.28e-02 -1.71e-03 1.69e-03 60.580 57
CPL -1.669 -0.171 0.362 89.332 -41.302 -89.332 4.06e-02 -8.08e-03 2.14e-02 59.780 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 9.68e-07 1.54e-06 1.85e-06 4.32e-06 5.60e-06 8.67e-06 erg/cm2
90%_error_low -6.59e-08 -6.17e-08 -1.01e-07 -4.95e-07 -2.34e-07 -5.72e-07 erg/cm2
90%_error_hi 6.75e-08 6.15e-08 1.01e-07 5.38e-07 2.35e-07 6.05e-07 erg/cm2
Peak flux PL 1.89e+00 1.55e+00 8.61e-01 7.05e-01 4.61e+00 5.00e+00 ph/cm2/s
90%_error_low -1.49e-01 -7.49e-02 -5.93e-02 -9.41e-02 -2.25e-01 -2.34e-01 ph/cm2/s
90%_error_hi 1.53e-01 7.46e-02 5.91e-02 1.03e-01 2.25e-01 2.34e-01 ph/cm2/s
Fluence CPL 9.45e-07 1.55e-06 1.86e-06 3.56e-06 5.54e-06 7.91e-06 erg/cm2
90%_error_low -8.17e-08 -7.05e-08 -1.04e-07 -1.21e-06 -2.70e-07 -1.25e-06 erg/cm2
90%_error_hi 7.55e-08 7.14e-08 1.05e-07 1.29e-06 2.68e-07 9.84e-07 erg/cm2
Peak flux CPL 1.83e+00 1.57e+00 8.69e-01 5.66e-01 4.56e+00 4.84e+00 ph/cm2/s
90%_error_low -1.83e-01 -8.67e-02 -6.19e-02 -1.91e-01 -2.43e-01 -3.32e-01 ph/cm2/s
90%_error_hi 1.85e-01 8.80e-02 6.28e-02 1.70e-01 2.44e-01 3.23e-01 ph/cm2/s
======================================================================
Special notes of this burst