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 Dec 17 14:06:16 EST 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger874475
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Trigger: 00874475 Segment: 000
BAT Trigger Time: 565531749.888 [s; MET]
Trigger Stop: 565531750.912 [s; MET]
UTC: 2018-12-03T12:08:47.866980 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 108.368923591337 Dec: -39.7690778271218 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.24
Image Trigger?: NO
Rate S/N Ratio: 14.8323969741913 [ if not an image trigger ]
Image S/N Ratio: 8.24
Analysis Position: [ source = BAT ]
RA: 108.368923591337 Dec: -39.7690778271218 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 108.337169327052 Dec: -39.7783831251791 [deg; J2000]
{ 07h 13m 20.9s , -39d 46' 42.2" }
+/- 1.29356544984538 [arcmin] (estimated 90% radius based on SNR)
+/- 0.413170845025074 [arcmin] (formal 1-sigma fit error)
SNR: 21.058171347652
Angular difference between the analysis and refined position is 1.567162 arcmin
Partial Coding Fraction: 0.8359375 [ including projection effects ]
Duration
T90: 15.0599999427795 +/- 1.76298946536287
Measured from: -0.812000036239624
to: 14.2479999065399 [s; relative to TRIGTIME]
T50: 8.39199995994568 +/- 0.950696620199982
Measured from: 1.49199998378754
to: 9.88399994373322 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.0239999294281
to: 2.0239999294281 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.7960000038147
to: 15.8519999980927 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.463087 0.544931 0.320919 0.074589
0.034495 0.036360 0.031140 0.026034 [error]
Peak 0.031797 0.050128 0.046322 0.022838
0.008435 0.008997 0.007820 0.006418 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 17.648 -1.796 15.852
T90 15.060 -0.812 14.248
T50 8.392 1.492 9.884
Peak 1.000 1.024 2.024
====== 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 -1.814 -0.147 0.143 - - - 4.75e-03 -4.28e-04 4.22e-04 56.000 57
CPL -1.629 -0.562 0.612 89.358 N/A N/A 6.01e-03 N/A N/A 55.670 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 -1.204 -0.366 0.383 - - - 9.05e-03 -1.66e-03 1.66e-03 57.840 57
CPL -1.227 -0.343 0.414 9999.360 -9999.360 -9999.360 9.02e-03 -1.59e-03 -9.02e-03 57.880 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 1.44e-07 2.18e-07 2.48e-07 5.39e-07 7.71e-07 1.15e-06 erg/cm2
90%_error_low -1.69e-08 -1.68e-08 -3.06e-08 -1.25e-07 -7.01e-08 -1.57e-07 erg/cm2
90%_error_hi 1.73e-08 1.68e-08 3.08e-08 1.48e-07 7.11e-08 1.75e-07 erg/cm2
Peak flux PL 2.81e-01 3.37e-01 2.93e-01 4.34e-01 1.06e+00 1.34e+00 ph/cm2/s
90%_error_low -1.04e-01 -7.88e-02 -6.57e-02 -1.84e-01 -2.03e-01 -2.60e-01 ph/cm2/s
90%_error_hi 1.17e-01 7.43e-02 6.31e-02 2.64e-01 2.03e-01 2.71e-01 ph/cm2/s
Fluence CPL 1.41e-07 2.23e-07 2.48e-07 3.84e-07 7.56e-07 9.96e-07 erg/cm2
90%_error_low -1.91e-08 -2.00e-08 -3.18e-08 -2.34e-07 -8.25e-08 -2.51e-07 erg/cm2
90%_error_hi 1.86e-08 2.24e-08 3.17e-08 3.34e-07 8.13e-08 2.13e-07 erg/cm2
Peak flux CPL 2.90e-01 3.38e-01 2.89e-01 4.46e-01 1.07e+00 1.34e+00 ph/cm2/s
90%_error_low -1.16e-01 -8.18e-02 -6.42e-02 N/A -2.18e-01 -2.77e-01 ph/cm2/s
90%_error_hi 1.11e-01 7.61e-02 6.92e-02 N/A 2.05e-01 2.76e-01 ph/cm2/s
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