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 v2.47
Process Start Time: Mon May 18 15:16:19 EDT 2020
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger945521
======================================================================
Trigger: 00945521 Segment: 000
BAT Trigger Time: 598653577.28 [s; MET]
Trigger Stop: 598653578.304 [s; MET]
UTC: 2019-12-21T20:39:13.151900 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 154.832295571442 Dec: -38.141432610349 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 11.67
Image Trigger?: NO
Rate S/N Ratio: 145.168867185771 [ if not an image trigger ]
Image S/N Ratio: 11.67
Analysis Position: [ source = BAT ]
RA: 154.832295571442 Dec: -38.141432610349 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 154.830581173243 Dec: -38.1519729313983 [deg; J2000]
{ 10h 19m 19.3s , -38d 09' 07.1" }
+/- 1.14588350232199 [arcmin] (estimated 90% radius based on SNR)
+/- 0.321593617023232 [arcmin] (formal 1-sigma fit error)
SNR: 25.0398659096873
Angular difference between the analysis and refined position is 0.637572 arcmin
Partial Coding Fraction: 0.1201172 [ including projection effects ]
Duration
T90: 48 +/- 16
Measured from: -15.2799999713898
to: 32.7200000286102 [s; relative to TRIGTIME]
T50: 16 +/- 16
Measured from: -15.2799999713898
to: 0.720000028610229 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 8.22000002861023
to: 9.22000002861023 [s; relative to TRIGTIME]
Total Fluence
Measured from: -15.2799999713898
to: 96.7200000286102 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 5.103132 9.441755 8.911206 2.940658
0.180456 0.203742 0.195085 0.156653 [error]
Peak 0.149470 0.246612 0.176597 0.057910
0.026709 0.030842 0.026766 0.020408 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 112.000 -15.280 96.720
T90 48.000 -15.280 32.720
T50 16.000 -15.280 0.720
Peak 1.000 8.220 9.220
====== 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 -1.232 -0.046 0.046 - - - 1.70e-02 -4.37e-04 4.37e-04 43.770 57
CPL -0.993 -0.181 0.188 245.349 -82.224 514.241 2.17e-02 -3.53e-03 4.39e-03 38.630 56
=== 1-s peak 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 -1.766 -0.243 0.231 - - - 3.56e-02 -5.82e-03 5.73e-03 88.040 57
CPL -0.521 -1.140 1.406 57.343 -12.406 86.116 1.62e-01 -1.62e-01 6.81e-01 84.590 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 1.90e-06 4.11e-06 7.00e-06 2.74e-05 1.92e-05 4.04e-05 erg/cm2
90%_error_low -1.01e-07 -1.30e-07 -1.99e-07 -1.77e-06 -5.10e-07 -1.86e-06 erg/cm2
90%_error_hi 1.03e-07 1.29e-07 1.99e-07 1.85e-06 5.10e-07 1.93e-06 erg/cm2
Peak flux PL 1.89e+00 1.63e+00 9.58e-01 8.44e-01 4.85e+00 5.32e+00 ph/cm2/s
90%_error_low -4.14e-01 -2.51e-01 -1.94e-01 -2.86e-01 -7.43e-01 -8.04e-01 ph/cm2/s
90%_error_hi 4.34e-01 2.50e-01 1.91e-01 3.50e-01 7.43e-01 8.05e-01 ph/cm2/s
Fluence CPL 1.78e-06 4.16e-06 7.18e-06 2.04e-05 1.90e-05 3.35e-05 erg/cm2
90%_error_low -1.30e-07 -1.38e-07 -2.40e-07 -3.97e-06 -5.38e-07 -3.95e-06 erg/cm2
90%_error_hi 1.32e-07 1.38e-07 2.42e-07 5.12e-06 5.37e-07 5.07e-06 erg/cm2
Peak flux CPL 1.90e+00 1.41e+00 7.18e-01 6.27e-01 4.31e+00 4.64e+00 ph/cm2/s
90%_error_low N/A -3.72e-01 -2.00e-01 -5.27e-01 -1.09e+00 -1.29e+00 ph/cm2/s
90%_error_hi N/A 2.45e-01 1.95e-01 1.46e-01 6.94e-01 1.19e+00 ph/cm2/s
======================================================================
Special notes of this burst