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: Fri Oct 26 19:23:28 EDT 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger864584
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Trigger: 00864584 Segment: 000
BAT Trigger Time: 560004250.944 [s; MET]
Trigger Stop: 560004251.968 [s; MET]
UTC: 2018-09-30T12:43:49.266800 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 76.8702927582825 Dec: -25.1383099129713 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.59
Image Trigger?: NO
Rate S/N Ratio: 11.1803398874989 [ if not an image trigger ]
Image S/N Ratio: 7.59
Analysis Position: [ source = BAT ]
RA: 76.8702927582825 Dec: -25.1383099129713 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 76.8940422075677 Dec: -25.1244390815755 [deg; J2000]
{ 05h 07m 34.6s , -25d 07' 28.0" }
+/- 2.25147425055248 [arcmin] (estimated 90% radius based on SNR)
+/- 1.02088927401161 [arcmin] (formal 1-sigma fit error)
SNR: 9.54100484783182
Angular difference between the analysis and refined position is 1.535230 arcmin
Partial Coding Fraction: 0.875 [ including projection effects ]
Duration
T90: 6.80400002002716 +/- 0.955790754386789
Measured from: -2.98000001907349
to: 3.82400000095367 [s; relative to TRIGTIME]
T50: 2.71599996089935 +/- 1.95360585053105
Measured from: -0.672000050544739
to: 2.04399991035461 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.139999985694885
to: 1.13999998569489 [s; relative to TRIGTIME]
Total Fluence
Measured from: -3.24399995803833
to: 4.2039999961853 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.129486 0.156480 0.058242 0.029797
0.018584 0.019473 0.017086 0.015373 [error]
Peak 0.037578 0.043976 0.008842 0.001839
0.007125 0.007323 0.006472 0.005738 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 7.448 -3.244 4.204
T90 6.804 -2.980 3.824
T50 2.716 -0.672 2.044
Peak 1.000 0.140 1.140
====== 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 -1.873 -0.290 0.271 - - - 2.96e-03 -5.60e-04 5.41e-04 53.950 57
CPL -1.731 -0.554 1.533 77.776 -77.757 -77.776 3.59e-03 N/A N/A 53.900 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 -2.178 -0.448 0.387 - - - 5.27e-03 -1.64e-03 1.58e-03 57.260 57
CPL -1.990 1.990 1.990 1.795 N/A N/A 7.03e-03 N/A N/A 57.160 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 4.00e-08 5.86e-08 6.39e-08 1.31e-07 2.03e-07 2.93e-07 erg/cm2
90%_error_low -8.31e-09 -8.77e-09 -1.61e-08 -5.56e-08 -3.71e-08 -7.54e-08 erg/cm2
90%_error_hi 8.54e-09 8.74e-09 1.65e-08 7.79e-08 3.83e-08 9.32e-08 erg/cm2
Peak flux PL 4.18e-01 2.83e-01 1.25e-01 7.63e-02 8.63e-01 9.02e-01 ph/cm2/s
90%_error_low -1.07e-01 -6.09e-02 -4.82e-02 -4.38e-02 -1.74e-01 -1.86e-01 ph/cm2/s
90%_error_hi 1.10e-01 5.97e-02 5.20e-02 7.07e-02 1.74e-01 1.88e-01 ph/cm2/s
Fluence CPL 3.96e-08 5.97e-08 6.35e-08 9.73e-08 1.99e-07 2.60e-07 erg/cm2
90%_error_low -8.96e-09 -9.70e-09 -2.01e-08 N/A -4.73e-08 -1.06e-07 erg/cm2
90%_error_hi 8.85e-09 1.34e-08 1.70e-08 N/A 4.07e-08 5.92e-08 erg/cm2
Peak flux CPL 4.17e-01 2.85e-01 1.27e-01 7.21e-02 8.63e-01 9.00e-01 ph/cm2/s
90%_error_low -1.33e-01 -1.52e-01 -4.99e-02 N/A -1.73e-01 -1.80e-01 ph/cm2/s
90%_error_hi 1.13e-01 5.77e-02 5.05e-02 N/A 1.74e-01 2.01e-01 ph/cm2/s
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