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: Sat Jan 20 04:37:02 EST 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger796778
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Trigger: 00796778 Segment: 000
BAT Trigger Time: 534772661.824 [s; MET]
Trigger Stop: 534772665.92 [s; MET]
UTC: 2017-12-12T11:57:21.680200 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 293.900492945572 Dec: 20.5684683791818 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.35
Image Trigger?: NO
Rate S/N Ratio: 9.48683298050514 [ if not an image trigger ]
Image S/N Ratio: 7.35
Analysis Position: [ source = BAT ]
RA: 293.900492945572 Dec: 20.5684683791818 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 293.921919072071 Dec: 20.5975380359236 [deg; J2000]
{ 19h 35m 41.3s , +20d 35' 51.1" }
+/- 1.67770096960655 [arcmin] (estimated 90% radius based on SNR)
+/- 0.796348538935564 [arcmin] (formal 1-sigma fit error)
SNR: 14.52437945096
Angular difference between the analysis and refined position is 2.119099 arcmin
Partial Coding Fraction: 0.609375 [ including projection effects ]
Duration
T90: 304 +/- 64
Measured from: -28.8240000009537
to: 275.175999999046 [s; relative to TRIGTIME]
T50: 80 +/- 16
Measured from: 3.17599999904633
to: 83.1759999990463 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 90.6759999990463
to: 91.6759999990463 [s; relative to TRIGTIME]
Total Fluence
Measured from: -28.8240000009537
to: 371.175999999046 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.892025 2.581113 1.102158 0.079162
0.139289 0.142056 0.124417 0.118717 [error]
Peak 0.035697 0.028824 0.012514 0.002062
0.007006 0.007280 0.006203 0.005607 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 400.000 -28.824 371.176
T90 304.000 -28.824 275.176
T50 80.000 3.176 83.176
Peak 1.000 90.676 91.676
====== 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 -2.206 -0.139 0.134 - - - 8.88e-04 -7.95e-05 7.84e-05 58.360 57
CPL -1.720 -0.284 0.637 22.867 -22.037 12.989 1.72e-03 -6.59e-04 2.35e-03 56.110 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 -2.255 -0.556 0.458 - - - 4.07e-03 -1.55e-03 1.50e-03 54.140 57
CPL -2.274 -1.286 3.300 441.886 N/A N/A 3.95e-03 N/A N/A 54.140 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 8.84e-07 1.06e-06 9.19e-07 1.36e-06 3.34e-06 4.22e-06 erg/cm2
90%_error_low -8.17e-08 -6.95e-08 -1.14e-07 -3.06e-07 -2.54e-07 -4.43e-07 erg/cm2
90%_error_hi 8.34e-08 6.94e-08 1.16e-07 3.65e-07 2.59e-07 4.86e-07 erg/cm2
Peak flux PL 3.48e-01 2.25e-01 9.42e-02 5.38e-02 6.94e-01 7.20e-01 ph/cm2/s
90%_error_low -9.97e-02 -5.87e-02 -4.39e-02 -3.55e-02 -1.61e-01 -1.72e-01 ph/cm2/s
90%_error_hi 1.02e-01 5.62e-02 4.90e-02 6.40e-02 1.62e-01 1.75e-01 ph/cm2/s
Fluence CPL 8.48e-07 1.11e-06 8.75e-07 5.57e-07 3.16e-06 3.39e-06 erg/cm2
90%_error_low -9.31e-08 -8.79e-08 -1.40e-07 -3.37e-07 -3.09e-07 -4.79e-07 erg/cm2
90%_error_hi 9.18e-08 9.32e-08 1.32e-07 7.13e-07 3.27e-07 8.17e-07 erg/cm2
Peak flux CPL 3.48e-01 2.25e-01 9.43e-02 5.80e-02 6.94e-01 7.23e-01 ph/cm2/s
90%_error_low -1.02e-01 -1.27e-01 -3.89e-02 -5.80e-02 -1.61e-01 N/A ph/cm2/s
90%_error_hi 1.02e-01 5.63e-02 4.71e-02 1.29e-01 1.63e-01 N/A ph/cm2/s
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