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 14:48:08 EDT 2020
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger956639
======================================================================
Trigger: 00956639 Segment: 000
BAT Trigger Time: 603470396.416 [s; MET]
Trigger Stop: 603470397.44 [s; MET]
UTC: 2020-02-15T14:39:31.975900 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 34.1217781187011 Dec: 12.7806238069698 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 16.49
Image Trigger?: NO
Rate S/N Ratio: 37.1214223865412 [ if not an image trigger ]
Image S/N Ratio: 16.49
Analysis Position: [ source = BAT ]
RA: 34.1217781187011 Dec: 12.7806238069698 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 34.0999775945519 Dec: 12.7753599537487 [deg; J2000]
{ 02h 16m 24.0s , +12d 46' 31.3" }
+/- 0.981626090769389 [arcmin] (estimated 90% radius based on SNR)
+/- 0.35363813512322 [arcmin] (formal 1-sigma fit error)
SNR: 31.2337378847574
Angular difference between the analysis and refined position is 1.314154 arcmin
Partial Coding Fraction: 0.734375 [ including projection effects ]
Duration
T90: 11.1479998826981 +/- 2.15453477136577
Measured from: -7.33599996566772
to: 3.81199991703033 [s; relative to TRIGTIME]
T50: 3.70799994468689 +/- 0.627910734101116
Measured from: -2.08800005912781
to: 1.61999988555908 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.159999966621399
to: 0.840000033378601 [s; relative to TRIGTIME]
Total Fluence
Measured from: -9.97200000286102
to: 5.36800003051758 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.406933 0.658523 0.511084 0.128731
0.029439 0.031156 0.027983 0.023393 [error]
Peak 0.071393 0.120292 0.112172 0.043061
0.008417 0.009415 0.009068 0.007147 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 15.340 -9.972 5.368
T90 11.148 -7.336 3.812
T50 3.708 -2.088 1.620
Peak 1.000 -0.160 0.840
====== 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 -1.406 -0.094 0.094 - - - 7.59e-03 -4.11e-04 4.11e-04 62.570 57
CPL -1.054 -0.352 0.386 140.810 -48.213 858.831 1.13e-02 -3.53e-03 5.85e-03 59.670 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 -1.209 -0.140 0.141 - - - 2.33e-02 -1.90e-03 1.90e-03 46.440 57
CPL -1.060 -0.273 0.566 344.871 -344.871 -344.871 2.74e-02 -5.78e-03 2.24e-02 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 1.36e-07 2.65e-07 4.00e-07 1.31e-06 1.12e-06 2.11e-06 erg/cm2
90%_error_low -1.32e-08 -1.58e-08 -2.69e-08 -1.83e-07 -6.63e-08 -2.03e-07 erg/cm2
90%_error_hi 1.36e-08 1.57e-08 2.68e-08 2.02e-07 6.66e-08 2.19e-07 erg/cm2
Peak flux PL 7.25e-01 8.68e-01 7.51e-01 1.11e+00 2.74e+00 3.46e+00 ph/cm2/s
90%_error_low -1.10e-01 -8.32e-02 -7.13e-02 -2.07e-01 -2.29e-01 -2.96e-01 ph/cm2/s
90%_error_hi 1.16e-01 8.22e-02 7.06e-02 2.35e-01 2.29e-01 3.00e-01 ph/cm2/s
Fluence CPL 1.27e-07 2.74e-07 4.12e-07 7.98e-07 1.10e-06 1.61e-06 erg/cm2
90%_error_low -1.58e-08 -1.82e-08 -2.98e-08 -2.97e-07 -7.18e-08 -3.02e-07 erg/cm2
90%_error_hi 1.61e-08 1.85e-08 3.02e-08 5.09e-07 7.15e-08 5.06e-07 erg/cm2
Peak flux CPL 7.02e-01 8.79e-01 7.65e-01 9.41e-01 2.72e+00 3.29e+00 ph/cm2/s
90%_error_low -1.35e-01 -4.57e-02 -8.11e-02 -4.02e-01 -2.34e-01 -4.73e-01 ph/cm2/s
90%_error_hi 1.24e-01 9.26e-02 8.58e-02 2.29e-01 2.34e-01 4.37e-01 ph/cm2/s
======================================================================
Special notes of this burst