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 v2.46
Process Start Time: Wed Nov 27 12:21:50 EST 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger927825
======================================================================
Trigger: 00927825 Segment: 000
BAT Trigger Time: 591905246.556 [s; MET]
Trigger Stop: 591905246.62 [s; MET]
UTC: 2019-10-04T18:07:02.863100 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 31.7210640523513 Dec: -36.9316566745842 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.12
Image Trigger?: NO
Rate S/N Ratio: 32.832910318764 [ if not an image trigger ]
Image S/N Ratio: 9.12
Analysis Position: [ source = BAT ]
RA: 31.7210640523513 Dec: -36.9316566745842 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 31.7139802104934 Dec: -36.9309718663815 [deg; J2000]
{ 02h 06m 51.4s , -36d 55' 51.5" }
+/- 1.07578999970331 [arcmin] (estimated 90% radius based on SNR)
+/- 0.34475150531572 [arcmin] (formal 1-sigma fit error)
SNR: 27.4027012457388
Angular difference between the analysis and refined position is 0.342226 arcmin
Partial Coding Fraction: 0.2617188 [ including projection effects ]
Duration
T90: 2.44399988651276 +/- 0.0823651038377751
Measured from: -0.0119999647140503
to: 2.43199992179871 [s; relative to TRIGTIME]
T50: 1.77599990367889 +/- 0.0651152861923527
Measured from: 0.220000028610229
to: 1.99599993228912 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.0920000076293945
to: 0.907999992370605 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.0920000076293945
to: 2.57599997520447 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.417915 0.642368 0.618592 0.148959
0.026410 0.030320 0.028500 0.018947 [error]
Peak 0.228848 0.328201 0.313187 0.062025
0.017903 0.020629 0.019036 0.011697 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 2.668 -0.092 2.576
T90 2.444 -0.012 2.432
T50 1.776 0.220 1.996
Peak 1.000 -0.092 0.908
====== 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 -1.350 -0.084 0.084 - - - 4.83e-02 -2.38e-03 2.38e-03 56.430 57
CPL -1.048 -0.323 0.341 174.070 -64.160 -174.070 6.69e-02 -1.89e-02 2.84e-02 53.780 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 -1.481 -0.104 0.103 - - - 6.28e-02 -4.14e-03 4.14e-03 76.070 57
CPL -0.807 -0.429 0.470 93.666 -19.250 68.545 1.34e-01 -5.04e-02 8.90e-02 68.530 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 1.43e-07 2.88e-07 4.52e-07 1.57e-06 1.26e-06 2.45e-06 erg/cm2
90%_error_low -1.28e-08 -1.60e-08 -2.68e-08 -1.93e-07 -6.69e-08 -2.13e-07 erg/cm2
90%_error_hi 1.32e-08 1.59e-08 2.66e-08 2.10e-07 6.71e-08 2.26e-07 erg/cm2
Peak flux PL 2.54e+00 2.58e+00 1.85e+00 2.12e+00 7.80e+00 9.09e+00 ph/cm2/s
90%_error_low -2.76e-01 -1.83e-01 -1.46e-01 -3.14e-01 -5.24e-01 -5.97e-01 ph/cm2/s
90%_error_hi 2.84e-01 1.82e-01 1.45e-01 3.42e-01 5.25e-01 5.98e-01 ph/cm2/s
Fluence CPL 1.34e-07 2.96e-07 4.67e-07 1.06e-06 1.24e-06 1.95e-06 erg/cm2
90%_error_low -1.58e-08 -1.80e-08 -3.13e-08 -3.42e-07 -6.96e-08 -3.42e-07 erg/cm2
90%_error_hi 1.60e-08 1.82e-08 3.18e-08 5.16e-07 6.94e-08 5.36e-07 erg/cm2
Peak flux CPL 2.23e+00 2.75e+00 2.01e+00 1.15e+00 7.67e+00 8.13e+00 ph/cm2/s
90%_error_low -3.33e-01 -2.16e-01 -1.79e-01 -3.54e-01 -5.32e-01 -6.50e-01 ph/cm2/s
90%_error_hi 3.41e-01 2.20e-01 1.82e-01 5.35e-01 5.32e-01 7.19e-01 ph/cm2/s
======================================================================