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 Apr 25 16:26:13 EDT 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger744791
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Trigger: 00744791 Segment: 000
BAT Trigger Time: 512617265.28 [s; MET]
Trigger Stop: 512617273.472 [s; MET]
UTC: 2017-03-31T01:40:46.444640 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 323.782196657932 Dec: -24.413770984427 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.93
Image Trigger?: NO
Rate S/N Ratio: 9.4339811320566 [ if not an image trigger ]
Image S/N Ratio: 7.93
Analysis Position: [ source = BAT ]
RA: 323.782196657932 Dec: -24.413770984427 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 323.77794176101 Dec: -24.4054251923295 [deg; J2000]
{ 21h 35m 06.7s , -24d 24' 19.5" }
+/- 2.01901709458333 [arcmin] (estimated 90% radius based on SNR)
+/- 0.868021849924879 [arcmin] (formal 1-sigma fit error)
SNR: 11.1481832769637
Angular difference between the analysis and refined position is 0.552080 arcmin
Partial Coding Fraction: 0.1855469 [ including projection effects ]
Duration
T90: 17.6160000562668 +/- 2.47690129067317
Measured from: -1.72799998521805
to: 15.8880000710487 [s; relative to TRIGTIME]
T50: 9.60000002384186 +/- 2.44361699787484
Measured from: 1.44000005722046
to: 11.0400000810623 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.420000016689301
to: 1.4200000166893 [s; relative to TRIGTIME]
Total Fluence
Measured from: -2.783999979496
to: 17.1520000100136 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.520557 0.814011 0.374668 0.060832
0.075245 0.077393 0.064755 0.053952 [error]
Peak 0.038653 0.063699 0.044627 0.023698
0.016554 0.017425 0.014898 0.013122 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 19.936 -2.784 17.152
T90 17.616 -1.728 15.888
T50 9.600 1.440 11.040
Peak 1.000 0.420 1.420
====== 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 -1.869 -0.211 0.202 - - - 5.85e-03 -8.13e-04 8.00e-04 68.890 57
CPL -0.356 -1.043 1.355 47.957 -8.329 16.374 4.02e-02 -4.02e-02 1.86e-01 62.200 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 -1.725 -0.513 0.502 - - - 9.32e-03 -3.14e-03 3.10e-03 68.910 57
CPL 1.244 -2.771 6.374 50.275 -12.819 59.611 3.54e-01 -3.54e-01 2.26e+02 65.640 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 2.11e-07 3.10e-07 3.39e-07 6.97e-07 1.07e-06 1.56e-06 erg/cm2
90%_error_low -3.68e-08 -3.78e-08 -6.16e-08 -2.23e-07 -1.47e-07 -2.96e-07 erg/cm2
90%_error_hi 3.81e-08 3.77e-08 6.21e-08 2.81e-07 1.49e-07 3.38e-07 erg/cm2
Peak flux PL 4.76e-01 4.20e-01 2.54e-01 2.32e-01 1.25e+00 1.38e+00 ph/cm2/s
90%_error_low -2.23e-01 -1.44e-01 -1.01e-01 -1.38e-01 -4.19e-01 -4.48e-01 ph/cm2/s
90%_error_hi 2.51e-01 1.42e-01 1.01e-01 2.16e-01 4.22e-01 4.48e-01 ph/cm2/s
Fluence CPL 1.78e-07 3.66e-07 3.36e-07 1.11e-07 9.67e-07 9.91e-07 erg/cm2
90%_error_low -4.41e-08 -5.39e-08 -7.94e-08 -8.03e-08 -1.50e-07 -1.70e-07 erg/cm2
90%_error_hi 4.45e-08 5.63e-08 7.51e-08 2.41e-07 1.60e-07 2.70e-07 erg/cm2
Peak flux CPL 2.94e-01 5.56e-01 2.83e-01 2.17e-02 1.15e+00 1.15e+00 ph/cm2/s
90%_error_low -2.51e-01 -1.96e-01 -1.41e-01 -2.17e-02 -4.36e-01 -4.37e-01 ph/cm2/s
90%_error_hi 3.05e-01 2.05e-01 1.40e-01 1.70e-01 4.36e-01 4.41e-01 ph/cm2/s
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