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 15:30:11 EST 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger873186
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Trigger: 00873186 Segment: 000
BAT Trigger Time: 564644005.056 [s; MET]
Trigger Stop: 564644005.312 [s; MET]
UTC: 2018-11-23T05:33:03.090320 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 184.347946931295 Dec: 14.5895052083792 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.8
Image Trigger?: NO
Rate S/N Ratio: 33.1058907144937 [ if not an image trigger ]
Image S/N Ratio: 8.8
Analysis Position: [ source = BAT ]
RA: 184.347946931295 Dec: 14.5895052083792 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 184.354266789054 Dec: 14.6189249364019 [deg; J2000]
{ 12h 17m 25.0s , +14d 37' 08.1" }
+/- 1.8942515228223 [arcmin] (estimated 90% radius based on SNR)
+/- 0.844450065854187 [arcmin] (formal 1-sigma fit error)
SNR: 12.211777619302
Angular difference between the analysis and refined position is 1.802919 arcmin
Partial Coding Fraction: 0.59375 [ including projection effects ]
Duration
T90: 0.259999990463257 +/- 0.0456070676079005
Measured from: 0.0399999618530273
to: 0.299999952316284 [s; relative to TRIGTIME]
T50: 0.123999953269958 +/- 0.0452548414138629
Measured from: 0.0880000591278076
to: 0.212000012397766 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.325999975204468
to: 0.674000024795532 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.0320000648498535
to: 0.312000036239624 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.024960 0.045320 0.065715 0.031287
0.006353 0.007780 0.008032 0.006937 [error]
Peak 0.030817 0.037276 0.076638 0.029402
0.009966 0.011185 0.010680 0.009103 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 0.280 0.032 0.312
T90 0.260 0.040 0.300
T50 0.124 0.088 0.212
Peak 1.000 -0.326 0.674
====== 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: 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 -0.725 -0.261 0.282 - - - 3.75e-02 -5.85e-03 5.70e-03 69.840 57
CPL -0.725 -0.256 0.292 9999.360 -9999.360 -9999.360 3.78e-02 -5.48e-03 4.40e-02 69.850 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 -0.627 -0.355 0.400 - - - 1.13e-02 -2.53e-03 2.38e-03 64.490 57
CPL -0.526 -0.454 1.327 998.849 -998.849 -998.849 1.23e-02 -3.45e-03 -1.23e-02 64.590 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 6.52e-09 1.93e-08 4.68e-08 3.14e-07 1.27e-07 3.87e-07 erg/cm2
90%_error_low -2.06e-09 -3.89e-09 -7.10e-09 -1.01e-07 -1.96e-08 -1.04e-07 erg/cm2
90%_error_hi 2.30e-09 3.76e-09 7.01e-09 1.34e-07 1.97e-08 1.35e-07 erg/cm2
Peak flux PL 2.03e-01 3.46e-01 4.48e-01 1.17e+00 1.32e+00 2.17e+00 ph/cm2/s
90%_error_low -9.01e-02 -1.04e-01 -8.06e-02 -4.27e-01 -2.56e-01 -4.51e-01 ph/cm2/s
90%_error_hi 1.12e-01 1.03e-01 8.04e-02 5.97e-01 2.59e-01 5.27e-01 ph/cm2/s
Fluence CPL 6.51e-09 1.93e-08 4.64e-08 3.29e-07 1.27e-07 3.87e-07 erg/cm2
90%_error_low N/A N/A -7.03e-09 -3.29e-07 -2.69e-08 -1.98e-07 erg/cm2
90%_error_hi N/A N/A 9.01e-09 6.96e-08 2.58e-08 5.97e-08 erg/cm2
Peak flux CPL 2.07e-01 3.46e-01 4.46e-01 1.17e+00 1.32e+00 2.06e+00 ph/cm2/s
90%_error_low -1.25e-01 -1.06e-01 -7.87e-02 -7.03e-01 -2.61e-01 -6.79e-01 ph/cm2/s
90%_error_hi 1.12e-01 7.97e-02 9.87e-02 5.77e-01 2.53e-01 5.87e-01 ph/cm2/s
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