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 Aug 7 22:51:25 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger648601
======================================================================
Trigger: 00648601 Segment: 000
BAT Trigger Time: 458331798.528 [s; MET]
Trigger Stop: 458331799.552 [s; MET]
UTC: 2015-07-11T18:23:03.688560 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 221.630798971157 Dec: -35.4711122907382 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.97
Image Trigger?: NO
Rate S/N Ratio: 11.5758369027902 [ if not an image trigger ]
Image S/N Ratio: 7.97
Analysis Position: [ source = BAT ]
RA: 221.630798971157 Dec: -35.4711122907382 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 221.623855138741 Dec: -35.4635038038544 [deg; J2000]
{ 14h 46m 29.7s , -35d 27' 48.6" }
+/- 0.98787408924078 [arcmin] (estimated 90% radius based on SNR)
+/- 0.43551830832634 [arcmin] (formal 1-sigma fit error)
SNR: 30.9519154679182
Angular difference between the analysis and refined position is 0.568806 arcmin
Partial Coding Fraction: 0.328125 [ including projection effects ]
Duration
T90: 70.9559999108315 +/- 14.2134365852416
Measured from: -27.9599999785423
to: 42.9959999322891 [s; relative to TRIGTIME]
T50: 14.4839999079704 +/- 3.43186306616897
Measured from: -4.13999998569489
to: 10.3439999222755 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.98000001907349
to: 2.98000001907349 [s; relative to TRIGTIME]
Total Fluence
Measured from: -34.0600000023842
to: 70.2360000014305 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.854910 2.638138 1.738202 0.420428
0.109263 0.101325 0.085054 0.070752 [error]
Peak 0.100968 0.145833 0.118864 0.046866
0.013447 0.013305 0.012262 0.008959 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 104.296 -34.060 70.236
T90 70.956 -27.960 42.996
T50 14.484 -4.140 10.344
Peak 1.000 1.980 2.980
====== 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: 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 -1.775 -0.085 0.085 - - - 4.44e-03 -2.13e-04 2.12e-04 71.100 57
CPL -1.483 -0.322 0.355 89.793 -25.048 -89.793 6.20e-03 -1.84e-03 3.02e-03 68.820 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 -1.538 -0.172 0.170 - - - 2.98e-02 -2.86e-03 2.85e-03 45.630 57
CPL -1.541 -0.168 0.176 9999.350 -9999.350 -9999.350 2.99e-02 -2.99e-02 1.54e-02 45.650 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 7.66e-07 1.19e-06 1.39e-06 3.14e-06 4.27e-06 6.49e-06 erg/cm2
90%_error_low -6.26e-08 -5.91e-08 -8.68e-08 -4.03e-07 -2.08e-07 -4.72e-07 erg/cm2
90%_error_hi 6.43e-08 5.89e-08 8.66e-08 4.41e-07 2.09e-07 4.98e-07 erg/cm2
Peak flux PL 1.27e+00 1.25e+00 8.63e-01 9.37e-01 3.77e+00 4.33e+00 ph/cm2/s
90%_error_low -2.20e-01 -1.35e-01 -1.02e-01 -2.13e-01 -3.80e-01 -4.10e-01 ph/cm2/s
90%_error_hi 2.33e-01 1.33e-01 1.00e-01 2.47e-01 3.82e-01 4.10e-01 ph/cm2/s
Fluence CPL 7.25e-07 1.22e-06 1.42e-06 2.09e-06 4.19e-06 5.45e-06 erg/cm2
90%_error_low -7.64e-08 -6.85e-08 -9.31e-08 -7.37e-07 -2.21e-07 -7.71e-07 erg/cm2
90%_error_hi 7.81e-08 6.95e-08 9.43e-08 1.18e-06 2.29e-07 1.23e-06 erg/cm2
Peak flux CPL 1.27e+00 1.23e+00 8.64e-01 9.34e-01 3.80e+00 4.52e+00 ph/cm2/s
90%_error_low N/A N/A N/A N/A -4.19e-01 -6.90e-01 ph/cm2/s
90%_error_hi N/A N/A N/A N/A 3.43e-01 2.13e-01 ph/cm2/s
======================================================================
Special notes of this burst