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: Mon Sep 11 18:50:37 EDT 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger768939
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Trigger: 00768939 Segment: 000
BAT Trigger Time: 525085930.624 [s; MET]
Trigger Stop: 525085934.72 [s; MET]
UTC: 2017-08-22T09:11:51.057700 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 94.3820902752538 Dec: 55.0186424017826 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 15.48
Image Trigger?: NO
Rate S/N Ratio: 28.6705423736629 [ if not an image trigger ]
Image S/N Ratio: 15.48
Analysis Position: [ source = BAT ]
RA: 94.3820902752538 Dec: 55.0186424017826 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 94.3747958377121 Dec: 54.9991722260662 [deg; J2000]
{ 06h 17m 30.0s , +54d 59' 57.0" }
+/- 2.07411960337215 [arcmin] (estimated 90% radius based on SNR)
+/- 0.71692905057524 [arcmin] (formal 1-sigma fit error)
SNR: 10.7275036534455
Angular difference between the analysis and refined position is 1.194867 arcmin
Partial Coding Fraction: 0.1210938 [ including projection effects ]
Duration
T90: 64 +/- 16
Measured from: -15.6240000128746
to: 48.3759999871254 [s; relative to TRIGTIME]
T50: 32 +/- 16
Measured from: 0.375999987125397
to: 32.3759999871254 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 7.8759999871254
to: 8.8759999871254 [s; relative to TRIGTIME]
Total Fluence
Measured from: -15.6240000128746
to: 64.3759999871254 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.159279 4.047646 2.558933 0.385429
0.172474 0.182155 0.154332 0.124743 [error]
Peak 0.131422 0.189459 0.142840 -0.010452
0.024036 0.025487 0.022650 0.014917 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 80.000 -15.624 64.376
T90 64.000 -15.624 48.376
T50 32.000 0.376 32.376
Peak 1.000 7.876 8.876
====== 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 -1.802 -0.094 0.093 - - - 8.70e-03 -4.90e-04 4.88e-04 64.290 57
CPL -1.328 -0.359 0.392 68.926 -13.494 60.539 1.53e-02 -5.19e-03 8.82e-03 59.050 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 -1.707 -0.255 0.244 - - - 3.17e-02 -5.21e-03 5.14e-03 47.590 57
CPL -0.906 -0.901 1.179 66.842 -17.354 -66.842 8.30e-02 -8.30e-02 2.46e-01 45.470 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 1.18e-06 1.81e-06 2.07e-06 4.55e-06 6.41e-06 9.61e-06 erg/cm2
90%_error_low -1.01e-07 -9.80e-08 -1.54e-07 -6.69e-07 -3.67e-07 -8.12e-07 erg/cm2
90%_error_hi 1.04e-07 9.79e-08 1.54e-07 7.39e-07 3.68e-07 8.63e-07 erg/cm2
Peak flux PL 1.59e+00 1.42e+00 8.70e-01 8.08e-01 4.23e+00 4.69e+00 ph/cm2/s
90%_error_low -3.64e-01 -2.22e-01 -1.78e-01 -2.82e-01 -6.53e-01 -7.16e-01 ph/cm2/s
90%_error_hi 3.83e-01 2.21e-01 1.77e-01 3.53e-01 6.54e-01 7.18e-01 ph/cm2/s
Fluence CPL N/A N/A N/A N/A N/A N/A erg/cm2
90%_error_low -1.01e-07 -9.80e-08 -1.54e-07 -6.69e-07 -3.67e-07 -8.12e-07 erg/cm2
90%_error_hi 1.04e-07 9.79e-08 1.54e-07 7.39e-07 3.68e-07 8.63e-07 erg/cm2
Peak flux CPL 1.41e+00 1.55e+00 9.34e-01 3.72e-01 4.14e+00 4.26e+00 ph/cm2/s
90%_error_low -4.29e-01 -2.71e-01 -2.04e-01 -2.35e-01 -6.63e-01 -7.20e-01 ph/cm2/s
90%_error_hi 4.41e-01 2.84e-01 2.11e-01 5.69e-01 6.63e-01 8.05e-01 ph/cm2/s
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