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: Thu Apr 5 17:28:01 EDT 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger814677
======================================================================
Trigger: 00814677 Segment: 000
BAT Trigger Time: 542869065.728 [s; MET]
Trigger Stop: 542869067.776 [s; MET]
UTC: 2018-03-16T04:57:25.096800 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 265.436483229163 Dec: 0.736518945680564 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.43
Image Trigger?: NO
Rate S/N Ratio: 21.51743479135 [ if not an image trigger ]
Image S/N Ratio: 9.43
Analysis Position: [ source = BAT ]
RA: 265.436483229163 Dec: 0.736518945680564 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 265.42170456138 Dec: 0.737511045022157 [deg; J2000]
{ 17h 41m 41.2s , +00d 44' 15.0" }
+/- 1.4542762881274 [arcmin] (estimated 90% radius based on SNR)
+/- 0.612359989159808 [arcmin] (formal 1-sigma fit error)
SNR: 17.8141716545047
Angular difference between the analysis and refined position is 0.888643 arcmin
Partial Coding Fraction: 0.2929688 [ including projection effects ]
Duration
T90: 87 +/- 20.591260281974
Measured from: -61.7280000448227
to: 25.2719999551773 [s; relative to TRIGTIME]
T50: 16 +/- 4.24264068711928
Measured from: -7.72800004482269
to: 8.27199995517731 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.27199995517731
to: 2.27199995517731 [s; relative to TRIGTIME]
Total Fluence
Measured from: -79.7280000448227
to: 37.2719999551773 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.703096 2.865625 1.968505 0.722571
0.176496 0.175125 0.149392 0.118919 [error]
Peak 0.061511 0.175653 0.114437 0.069534
0.017343 0.018956 0.016529 0.013314 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 117.000 -79.728 37.272
T90 87.000 -61.728 25.272
T50 16.000 -7.728 8.272
Peak 1.000 1.272 2.272
====== 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 -1.458 -0.121 0.122 - - - 4.40e-03 -3.04e-04 3.04e-04 58.740 57
CPL -1.390 -0.182 0.413 466.561 -466.561 -466.561 4.75e-03 -6.44e-04 2.67e-03 58.790 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 -1.205 -0.226 0.236 - - - 2.83e-02 -3.75e-03 3.74e-03 70.240 57
CPL -1.205 -0.223 0.295 9999.360 -9999.360 -9999.360 2.84e-02 -2.84e-02 -1.83e-02 70.240 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 6.31e-07 1.19e-06 1.73e-06 5.38e-06 4.92e-06 8.94e-06 erg/cm2
90%_error_low -8.01e-08 -9.25e-08 -1.47e-07 -9.40e-07 -3.62e-07 -1.05e-06 erg/cm2
90%_error_hi 8.32e-08 9.17e-08 1.46e-07 1.07e-06 3.63e-07 1.15e-06 erg/cm2
Peak flux PL 8.79e-01 1.05e+00 9.14e-01 1.36e+00 3.32e+00 4.20e+00 ph/cm2/s
90%_error_low -2.26e-01 -1.75e-01 -1.33e-01 -3.78e-01 -4.65e-01 -5.63e-01 ph/cm2/s
90%_error_hi 2.45e-01 1.71e-01 1.32e-01 4.65e-01 4.68e-01 5.69e-01 ph/cm2/s
Fluence CPL 6.30e-07 1.19e-06 1.74e-06 5.36e-06 4.91e-06 8.77e-06 erg/cm2
90%_error_low -9.49e-08 -9.47e-08 -1.49e-07 -2.62e-06 -3.88e-07 -2.47e-06 erg/cm2
90%_error_hi 4.69e-08 1.07e-07 1.62e-07 6.13e-07 3.66e-07 1.25e-06 erg/cm2
Peak flux CPL 8.96e-01 1.05e+00 9.10e-01 1.36e+00 3.33e+00 4.25e+00 ph/cm2/s
90%_error_low -2.46e-01 -1.40e-01 -1.31e-01 -6.02e-01 -4.79e-01 -9.59e-01 ph/cm2/s
90%_error_hi 2.28e-01 1.89e-01 1.55e-01 4.54e-01 4.71e-01 4.92e-01 ph/cm2/s
======================================================================
Special notes of this burst