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 19 18:53:03 EDT 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger851829
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Trigger: 00851829 Segment: 000
BAT Trigger Time: 555152710.4 [s; MET]
Trigger Stop: 555152711.424 [s; MET]
UTC: 2018-08-05T09:04:49.021980 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 167.530004406896 Dec: -45.3308970672546 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.46
Image Trigger?: NO
Rate S/N Ratio: 11.8321595661992 [ if not an image trigger ]
Image S/N Ratio: 7.46
Analysis Position: [ source = BAT ]
RA: 167.530004406896 Dec: -45.3308970672546 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 167.575257824607 Dec: -45.3266205270777 [deg; J2000]
{ 11h 10m 18.1s , -45d 19' 35.8" }
+/- 2.1404842271886 [arcmin] (estimated 90% radius based on SNR)
+/- 0.944234550083564 [arcmin] (formal 1-sigma fit error)
SNR: 10.2555353123739
Angular difference between the analysis and refined position is 1.926060 arcmin
Partial Coding Fraction: 0.640625 [ including projection effects ]
Duration
T90: 1.67599987983704 +/- 0.408803108661506
Measured from: 0.116000056266785
to: 1.79199993610382 [s; relative to TRIGTIME]
T50: 0.863999962806702 +/- 0.378227475672485
Measured from: 0.340000033378601
to: 1.2039999961853 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.128000020980835
to: 1.12800002098083 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.0360000133514404
to: 1.89999997615814 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.071355 0.069467 0.047089 0.032694
0.011993 0.012731 0.011461 0.011116 [error]
Peak 0.045114 0.053232 0.028976 0.016086
0.008975 0.009910 0.008758 0.008174 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 1.864 0.036 1.900
T90 1.676 0.116 1.792
T50 0.864 0.340 1.204
Peak 1.000 0.128 1.128
====== 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 -1.577 -0.322 0.313 - - - 6.46e-03 -1.36e-03 1.33e-03 56.430 57
CPL -0.165 -1.487 2.321 54.082 -14.930 -54.082 4.23e-02 -4.23e-02 9.62e-01 53.880 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 -1.610 -0.341 0.327 - - - 8.50e-03 -1.94e-03 1.90e-03 49.950 57
CPL 0.618 -1.986 3.161 47.232 -10.231 61.713 1.73e-01 -1.73e-01 1.20e+01 46.200 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 1.65e-08 2.90e-08 3.88e-08 1.07e-07 1.13e-07 1.91e-07 erg/cm2
90%_error_low -4.54e-09 -5.53e-09 -1.05e-08 -4.84e-08 -2.52e-08 -6.06e-08 erg/cm2
90%_error_hi 4.76e-09 5.52e-09 1.07e-08 7.06e-08 2.60e-08 7.89e-08 erg/cm2
Peak flux PL 3.89e-01 3.67e-01 2.40e-01 2.44e-01 1.10e+00 1.24e+00 ph/cm2/s
90%_error_low -1.12e-01 -7.51e-02 -6.81e-02 -1.11e-01 -2.23e-01 -2.61e-01 ph/cm2/s
90%_error_hi 1.18e-01 7.50e-02 6.92e-02 1.57e-01 2.23e-01 2.66e-01 ph/cm2/s
Fluence CPL 1.48e-08 3.44e-08 3.61e-08 1.37e-08 9.57e-08 9.90e-08 erg/cm2
90%_error_low -5.23e-09 -8.02e-09 -1.57e-08 N/A -2.59e-08 -2.91e-08 erg/cm2
90%_error_hi 5.26e-09 8.66e-09 1.33e-08 N/A 3.13e-08 1.09e-07 erg/cm2
Peak flux CPL 3.24e-01 4.70e-01 2.14e-01 1.98e-02 1.03e+00 1.03e+00 ph/cm2/s
90%_error_low -1.37e-01 -1.19e-01 -9.96e-02 -1.98e-02 -2.24e-01 -2.25e-01 ph/cm2/s
90%_error_hi 1.37e-01 1.23e-01 9.45e-02 1.54e-01 2.29e-01 2.40e-01 ph/cm2/s
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