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.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Sun Mar 17 23:16:25 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger876016
======================================================================
Trigger: 00876016 Segment: 000
BAT Trigger Time: 566398680.512 [s; MET]
Trigger Stop: 566398696.896 [s; MET]
UTC: 2018-12-13T12:57:38.436940 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 248.207112628901 Dec: 78.5044118700811 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 11.3
Image Trigger?: NO
Rate S/N Ratio: 13.7840487520902 [ if not an image trigger ]
Image S/N Ratio: 11.3
Analysis Position: [ source = BAT ]
RA: 248.207112628901 Dec: 78.5044118700811 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 248.209012269858 Dec: 78.5009395453647 [deg; J2000]
{ 16h 32m 50.2s , +78d 30' 03.4" }
+/- 1.91872039564987 [arcmin] (estimated 90% radius based on SNR)
+/- 0.814314192779804 [arcmin] (formal 1-sigma fit error)
SNR: 11.9899110935762
Angular difference between the analysis and refined position is 0.209574 arcmin
Partial Coding Fraction: 0.2128906 [ including projection effects ]
Duration
T90: 15.2960000038147 +/- 1.38101413587535
Measured from: 0.136000037193298
to: 15.432000041008 [s; relative to TRIGTIME]
T50: 11.1520000696182 +/- 2.29403404597699
Measured from: 2.1360000371933
to: 13.2880001068115 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.16400003433228
to: 2.16400003433228 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.407999992370605
to: 15.944000005722 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.496868 0.829836 0.576293 0.163402
0.077810 0.081559 0.075385 0.066920 [error]
Peak 0.074057 0.093693 0.052313 0.040305
0.019198 0.021849 0.021214 0.016333 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 16.352 -0.408 15.944
T90 15.296 0.136 15.432
T50 11.152 2.136 13.288
Peak 1.000 1.164 2.164
====== 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 -1.583 -0.200 0.197 - - - 9.41e-03 -1.09e-03 1.08e-03 39.300 57
CPL -1.496 -1.326 0.824 270.472 -270.472 -270.472 1.04e-02 -8.54e-03 1.65e-02 39.280 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 -1.697 -0.455 0.420 - - - 1.57e-02 -4.63e-03 4.51e-03 47.380 57
CPL -0.650 -1.549 2.986 60.959 -28.982 -60.959 5.74e-02 -5.74e-02 2.34e+00 46.440 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 2.12e-07 3.71e-07 4.95e-07 1.35e-06 1.44e-06 2.43e-06 erg/cm2
90%_error_low -4.00e-08 -4.41e-08 -7.45e-08 -3.89e-07 -1.78e-07 -4.56e-07 erg/cm2
90%_error_hi 4.20e-08 4.37e-08 7.38e-08 4.80e-07 1.80e-07 5.27e-07 erg/cm2
Peak flux PL 7.81e-01 7.00e-01 4.32e-01 4.05e-01 2.08e+00 2.32e+00 ph/cm2/s
90%_error_low -3.03e-01 -1.95e-01 -1.56e-01 -2.25e-01 -5.73e-01 -6.33e-01 ph/cm2/s
90%_error_hi 3.30e-01 1.94e-01 1.53e-01 3.26e-01 5.74e-01 6.35e-01 ph/cm2/s
Fluence CPL 2.10e-07 3.74e-07 4.98e-07 1.19e-06 1.43e-06 2.27e-06 erg/cm2
90%_error_low -4.67e-08 -4.72e-08 -7.68e-08 -8.02e-07 -1.95e-07 -8.25e-07 erg/cm2
90%_error_hi 3.98e-08 5.48e-08 8.03e-08 2.53e-07 1.86e-07 6.59e-07 erg/cm2
Peak flux CPL 6.82e-01 7.95e-01 4.68e-01 1.47e-01 2.05e+00 2.09e+00 ph/cm2/s
90%_error_low -3.56e-01 -2.53e-01 N/A -1.47e-01 -5.79e-01 -6.09e-01 ph/cm2/s
90%_error_hi 3.73e-01 2.84e-01 N/A 3.68e-01 5.78e-01 3.59e-01 ph/cm2/s
======================================================================