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.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.47
Process Start Time: Mon May 18 14:18:00 EDT 2020
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger966554
======================================================================
Trigger: 00966554 Segment: 000
BAT Trigger Time: 608713541.952 [s; MET]
Trigger Stop: 608713542.464 [s; MET]
UTC: 2020-04-16T07:05:17.171400 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 335.690709384972 Dec: -7.52998032721292 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.19
Image Trigger?: NO
Rate S/N Ratio: 21.6564078277077 [ if not an image trigger ]
Image S/N Ratio: 10.19
Analysis Position: [ source = BAT ]
RA: 335.690709384972 Dec: -7.52998032721292 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 335.693477989413 Dec: -7.52694426326541 [deg; J2000]
{ 22h 22m 46.4s , -07d 31' 37.0" }
+/- 1.33918172274151 [arcmin] (estimated 90% radius based on SNR)
+/- 0.424268143128861 [arcmin] (formal 1-sigma fit error)
SNR: 20.040985560328
Angular difference between the analysis and refined position is 0.245570 arcmin
Partial Coding Fraction: 0.3398438 [ including projection effects ]
Duration
T90: 6.04799997806549 +/- 0.978652094595659
Measured from: -1.80799996852875
to: 4.24000000953674 [s; relative to TRIGTIME]
T50: 3.18400013446808 +/- 0.609261909202546
Measured from: -0.0320000648498535
to: 3.15200006961823 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.0279999971389771
to: 0.972000002861023 [s; relative to TRIGTIME]
Total Fluence
Measured from: -2.33599996566772
to: 4.95999991893768 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.470313 0.561033 0.359884 0.147273
0.039258 0.041406 0.036024 0.030863 [error]
Peak 0.097966 0.179493 0.126429 0.020890
0.016564 0.017684 0.015912 0.011914 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 7.296 -2.336 4.960
T90 6.048 -1.808 4.240
T50 3.184 -0.032 3.152
Peak 1.000 -0.028 0.972
====== 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 -1.767 -0.147 0.145 - - - 1.41e-02 -1.23e-03 1.21e-03 57.140 57
CPL -1.765 -0.149 0.431 9999.210 -9999.200 -9999.210 1.41e-02 -6.98e-03 9.38e-03 57.140 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 -1.665 -0.206 0.200 - - - 2.86e-02 -3.64e-03 3.61e-03 43.790 57
CPL -1.047 -0.741 0.975 77.818 -19.775 -77.818 5.89e-02 -3.25e-02 1.21e-01 42.120 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 1.69e-07 2.63e-07 3.10e-07 7.04e-07 9.47e-07 1.45e-06 erg/cm2
90%_error_low -2.20e-08 -2.17e-08 -3.60e-08 -1.57e-07 -8.43e-08 -1.92e-07 erg/cm2
90%_error_hi 2.27e-08 2.16e-08 3.58e-08 1.84e-07 8.50e-08 2.12e-07 erg/cm2
Peak flux PL 1.38e+00 1.26e+00 7.94e-01 7.66e-01 3.75e+00 4.20e+00 ph/cm2/s
90%_error_low -2.68e-01 -1.62e-01 -1.26e-01 -2.17e-01 -4.71e-01 -5.11e-01 ph/cm2/s
90%_error_hi 2.83e-01 1.61e-01 1.24e-01 2.58e-01 4.73e-01 5.11e-01 ph/cm2/s
Fluence CPL 1.70e-07 2.62e-07 3.08e-07 7.02e-07 9.49e-07 1.45e-06 erg/cm2
90%_error_low N/A N/A -4.43e-08 N/A -9.16e-08 -3.78e-07 erg/cm2
90%_error_hi N/A N/A 4.63e-08 N/A 8.68e-08 1.95e-07 erg/cm2
Peak flux CPL 1.24e+00 1.34e+00 8.44e-01 4.19e-01 3.68e+00 3.84e+00 ph/cm2/s
90%_error_low -3.22e-01 -1.93e-01 -1.44e-01 -2.35e-01 -4.83e-01 -5.58e-01 ph/cm2/s
90%_error_hi 3.36e-01 2.01e-01 1.50e-01 4.46e-01 4.84e-01 6.78e-01 ph/cm2/s
======================================================================