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 Mar 17 23:04:07 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger881709
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Trigger: 00881709 Segment: 000
BAT Trigger Time: 568242253.376 [s; MET]
Trigger Stop: 568242254.4 [s; MET]
UTC: 2019-01-03T21:03:51.185580 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 212.574478514615 Dec: 35.2610232533427 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.37
Image Trigger?: NO
Rate S/N Ratio: 63.2692658405327 [ if not an image trigger ]
Image S/N Ratio: 9.37
Analysis Position: [ source = BAT ]
RA: 212.574478514615 Dec: 35.2610232533427 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 212.560921696406 Dec: 35.2539317989469 [deg; J2000]
{ 14h 10m 14.6s , +35d 15' 14.2" }
+/- 1.32220580279357 [arcmin] (estimated 90% radius based on SNR)
+/- 0.700377818825502 [arcmin] (formal 1-sigma fit error)
SNR: 20.4095773018424
Angular difference between the analysis and refined position is 0.788799 arcmin
Partial Coding Fraction: 0.0625 [ including projection effects ]
Duration
T90: 19.5199999809265 +/- 2.71679818444433
Measured from: -4.87999999523163
to: 14.6399999856949 [s; relative to TRIGTIME]
T50: 9.31200003623962 +/- 0.486621028293069
Measured from: 0.527999997138977
to: 9.8400000333786 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.595999956130981
to: 1.59599995613098 [s; relative to TRIGTIME]
Total Fluence
Measured from: -10.432000041008
to: 16.1759999990463 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 4.337435 6.750801 5.436405 1.209056
0.204463 0.217145 0.193132 0.141426 [error]
Peak 0.377628 0.673705 0.644780 0.202030
0.047461 0.056827 0.058308 0.039863 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 26.608 -10.432 16.176
T90 19.520 -4.880 14.640
T50 9.312 0.528 9.840
Peak 1.000 0.596 1.596
====== 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: CPL)
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 -1.630 -0.065 0.065 - - - 4.96e-02 -1.86e-03 1.86e-03 74.910 57
CPL -0.992 -0.278 0.296 84.988 -11.879 25.244 9.91e-02 -2.53e-02 3.65e-02 58.410 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 -1.411 -0.145 0.142 - - - 1.33e-01 -1.24e-02 1.24e-02 71.270 57
CPL -0.581 -0.599 0.694 91.928 -21.506 95.203 3.36e-01 -1.61e-01 3.78e-01 65.410 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 1.90e-06 3.23e-06 4.18e-06 1.09e-05 1.23e-05 2.02e-05 erg/cm2
90%_error_low -1.28e-07 -1.33e-07 -1.94e-07 -1.05e-06 -4.78e-07 -1.20e-06 erg/cm2
90%_error_hi 1.31e-07 1.33e-07 1.93e-07 1.12e-06 4.79e-07 1.25e-06 erg/cm2
Peak flux PL 5.85e-04 6.98e-03 7.51e-02 9.15e+00 3.30e-01 8.99e+00 ph/cm2/s
90%_error_low N/A N/A N/A N/A N/A N/A ph/cm2/s
90%_error_hi N/A N/A N/A N/A N/A N/A ph/cm2/s
Fluence CPL 1.66e-06 3.39e-06 4.42e-06 5.21e-06 1.19e-05 1.47e-05 erg/cm2
90%_error_low -1.59e-07 -1.53e-07 -2.24e-07 -1.30e-06 -5.14e-07 -1.38e-06 erg/cm2
90%_error_hi 1.63e-07 1.54e-07 2.27e-07 1.83e-06 5.13e-07 1.85e-06 erg/cm2
Peak flux CPL 4.27e+00 5.77e+00 4.46e+00 2.42e+00 1.60e+01 1.69e+01 ph/cm2/s
90%_error_low -9.09e-01 -6.34e-01 -5.52e-01 -9.91e-01 -1.55e+00 -1.86e+00 ph/cm2/s
90%_error_hi 9.51e-01 6.51e-01 5.68e-01 1.62e+00 1.55e+00 2.11e+00 ph/cm2/s
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