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 Nov 1 01:39:05 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger656604
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Trigger: 00656604 Segment: 000
BAT Trigger Time: 464846984 [s; MET]
Trigger Stop: 464847048 [s; MET]
UTC: 2015-09-25T04:09:28.817940 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 227.519805836203 Dec: -19.6283015106395 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 12.64
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 12.64
Analysis Position: [ source = BAT ]
RA: 227.519805836203 Dec: -19.6283015106395 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 227.538143173026 Dec: -19.642350325229 [deg; J2000]
{ 15h 10m 09.2s , -19d 38' 32.5" }
+/- 1.97887450924328 [arcmin] (estimated 90% radius based on SNR)
+/- 0.818669140176688 [arcmin] (formal 1-sigma fit error)
SNR: 11.472649643631
Angular difference between the analysis and refined position is 1.335802 arcmin
Partial Coding Fraction: 0.5625 [ including projection effects ]
Duration
T90: 122.131999969482 +/- 26.6956809453882
Measured from: 10.3479999899864
to: 132.479999959469 [s; relative to TRIGTIME]
T50: 41.8159999847412 +/- 26.2243614449715
Measured from: 23.4359999895096
to: 65.2519999742508 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 30.6840000152588
to: 31.6840000152588 [s; relative to TRIGTIME]
Total Fluence
Measured from: 3.50800001621246
to: 149.611999988556 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.071338 1.016705 0.467501 0.052398
0.097165 0.091601 0.075329 0.062976 [error]
Peak 0.022957 0.025264 0.021554 0.007989
0.009154 0.008666 0.007114 0.006043 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 146.104 3.508 149.612
T90 122.132 10.348 132.480
T50 41.816 23.436 65.252
Peak 1.000 30.684 31.684
====== 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 -2.186 -0.209 0.197 - - - 9.96e-04 -1.39e-04 1.36e-04 68.580 57
CPL -2.175 -0.046 1.462 9999.360 -9996.780 -9955.621 1.01e-03 -2.23e-04 6.43e-03 68.600 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 -1.503 -0.634 0.625 - - - 5.00e-03 -1.69e-03 1.67e-03 53.480 57
CPL -1.207 -1.323 4.542 145.114 -145.114 -145.114 6.90e-03 N/A N/A 53.440 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 3.55e-07 4.31e-07 3.79e-07 5.73e-07 1.37e-06 1.74e-06 erg/cm2
90%_error_low -5.05e-08 -4.53e-08 -7.10e-08 -1.86e-07 -1.64e-07 -2.78e-07 erg/cm2
90%_error_hi 5.17e-08 4.52e-08 7.30e-08 2.38e-07 1.67e-07 3.16e-07 erg/cm2
Peak flux PL 2.06e-01 2.07e-01 1.46e-01 1.64e-01 6.25e-01 7.24e-01 ph/cm2/s
90%_error_low -1.14e-01 -8.00e-02 -6.12e-02 -1.07e-01 -2.18e-01 -2.41e-01 ph/cm2/s
90%_error_hi 1.38e-01 7.65e-02 5.86e-02 1.84e-01 2.21e-01 2.42e-01 ph/cm2/s
Fluence CPL 3.41e-07 4.58e-07 3.65e-07 2.29e-07 1.30e-06 1.39e-06 erg/cm2
90%_error_low -5.60e-08 -5.72e-08 -8.68e-08 -1.69e-07 -1.84e-07 -2.62e-07 erg/cm2
90%_error_hi 5.54e-08 6.20e-08 8.06e-08 4.08e-07 1.92e-07 5.30e-07 erg/cm2
Peak flux CPL 1.93e-01 2.12e-01 1.51e-01 1.22e-01 6.15e-01 6.78e-01 ph/cm2/s
90%_error_low N/A -8.35e-02 N/A -1.22e-01 -2.54e-01 -3.15e-01 ph/cm2/s
90%_error_hi N/A 9.14e-02 N/A 2.17e-01 2.26e-01 2.82e-01 ph/cm2/s
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