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 01:44:22 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger655721
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Trigger: 00655721 Segment: 000
BAT Trigger Time: 464044720 [s; MET]
Trigger Stop: 464044784 [s; MET]
UTC: 2015-09-15T21:18:24.860420 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 319.730955300173 Dec: -34.8537258550562 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.23
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.23
Analysis Position: [ source = BAT ]
RA: 319.730955300173 Dec: -34.8537258550562 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 319.679786129478 Dec: -34.8652489691896 [deg; J2000]
{ 21h 18m 43.1s , -34d 51' 54.9" }
+/- 3.62218481295882 [arcmin] (estimated 90% radius based on SNR)
+/- 2.20575107198738 [arcmin] (formal 1-sigma fit error)
SNR: 4.83714319162991
Angular difference between the analysis and refined position is 2.612382 arcmin
Partial Coding Fraction: 0.5546875 [ including projection effects ]
Duration
T90: 160 +/- 57.6888204074238
Measured from: -63
to: 97 [s; relative to TRIGTIME]
T50: 64 +/- 45.254833995939
Measured from: -15
to: 49 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 40.5
to: 41.5 [s; relative to TRIGTIME]
Total Fluence
Measured from: -63
to: 113 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.818489 0.596014 0.183994 0.033346
0.108507 0.106067 0.090961 0.083400 [error]
Peak 0.000853 0.013820 0.003483 -0.000788
0.008674 0.008352 0.007045 0.006573 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 176.000 -63.000 113.000
T90 160.000 -63.000 97.000
T50 64.000 -15.000 49.000
Peak 1.000 40.500 41.500
====== 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 -2.474 -0.460 0.393 - - - 4.22e-04 -1.37e-04 1.36e-04 53.270 57
CPL -1.921 N/A N/A 4.860 N/A N/A 9.68e-04 N/A N/A 53.520 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 -2.218 2.218 2.218 - - - 1.08e-03 -1.08e-03 1.55e-03 56.100 57
CPL 0.112 N/A N/A 43.299 N/A N/A 1.97e-02 N/A N/A 55.510 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 2.39e-07 2.44e-07 1.76e-07 2.03e-07 7.38e-07 8.62e-07 erg/cm2
90%_error_low -5.27e-08 -5.44e-08 -7.22e-08 -1.23e-07 -1.73e-07 -2.46e-07 erg/cm2
90%_error_hi 5.30e-08 5.18e-08 8.33e-08 2.20e-07 1.86e-07 3.21e-07 erg/cm2
Peak flux PL 8.90e-02 5.86e-02 2.56e-02 1.53e-02 1.80e-01 1.89e-01 ph/cm2/s
90%_error_low -8.90e-02 -5.86e-02 -2.56e-02 -1.53e-02 -1.80e-01 -1.89e-01 ph/cm2/s
90%_error_hi 1.23e-01 6.62e-02 4.97e-02 1.07e-01 1.99e-01 2.11e-01 ph/cm2/s
Fluence CPL 2.38e-07 2.34e-07 1.68e-07 2.32e-07 7.19e-07 8.71e-07 erg/cm2
90%_error_low -5.77e-08 -1.08e-07 -1.17e-07 -1.98e-07 -3.20e-07 -4.51e-07 erg/cm2
90%_error_hi 5.44e-08 6.23e-08 9.34e-08 2.60e-07 2.14e-07 3.88e-07 erg/cm2
Peak flux CPL N/A N/A N/A N/A N/A N/A ph/cm2/s
90%_error_low -8.90e-02 -5.86e-02 -2.56e-02 -1.53e-02 -1.80e-01 -1.89e-01 ph/cm2/s
90%_error_hi 1.23e-01 6.62e-02 4.97e-02 1.07e-01 1.99e-01 2.11e-01 ph/cm2/s
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