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: Fri Feb 10 13:26:44 EST 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger735331
======================================================================
Trigger: 00735331 Segment: 000
BAT Trigger Time: 507222827.2 [s; MET]
Trigger Stop: 507222827.328 [s; MET]
UTC: 2017-01-27T15:13:28.675820 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 19.9443848948679 Dec: -30.3376379347453 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.99
Image Trigger?: NO
Rate S/N Ratio: 26.5141471671257 [ if not an image trigger ]
Image S/N Ratio: 8.99
Analysis Position: [ source = BAT ]
RA: 19.9443848948679 Dec: -30.3376379347453 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 19.9967774194699 Dec: -30.3404327702013 [deg; J2000]
{ 01h 19m 59.2s , -30d 20' 25.6" }
+/- 1.93234130484958 [arcmin] (estimated 90% radius based on SNR)
+/- 0.864980295765155 [arcmin] (formal 1-sigma fit error)
SNR: 11.8693567649006
Angular difference between the analysis and refined position is 2.718225 arcmin
Partial Coding Fraction: 0.75 [ including projection effects ]
Duration
T90: 0.512000024318695 +/- 0.144886159629968
Measured from: 0.0480000376701355
to: 0.560000061988831 [s; relative to TRIGTIME]
T50: 0.25600004196167 +/- 0.0815843606584965
Measured from: 0.0799999833106995
to: 0.336000025272369 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.155999958515167
to: 0.844000041484833 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.0480000376701355
to: 0.639999985694885 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.022746 0.043009 0.053874 0.022698
0.005706 0.006559 0.006685 0.006466 [error]
Peak 0.014402 0.049088 0.063172 0.016031
0.007097 0.008283 0.008122 0.008007 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 0.592 0.048 0.640
T90 0.512 0.048 0.560
T50 0.256 0.080 0.336
Peak 1.000 -0.156 0.844
====== 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 -0.886 -0.248 0.260 - - - 1.55e-02 -2.26e-03 2.24e-03 48.490 57
CPL -0.520 -0.489 1.115 230.197 -230.197 -230.197 2.27e-02 -9.05e-03 4.40e-02 48.030 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 -0.795 -0.264 0.281 - - - 9.88e-03 -1.68e-03 1.67e-03 63.430 57
CPL 0.965 -1.346 1.944 95.799 -23.609 117.239 5.90e-02 -5.90e-02 2.93e-01 58.000 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 6.62e-09 1.78e-08 3.85e-08 2.17e-07 1.04e-07 2.80e-07 erg/cm2
90%_error_low -1.86e-09 -3.16e-09 -6.17e-09 -7.01e-08 -1.64e-08 -7.44e-08 erg/cm2
90%_error_hi 2.04e-09 3.08e-09 6.09e-09 9.25e-08 1.66e-08 9.44e-08 erg/cm2
Peak flux PL 2.08e-01 3.19e-01 3.68e-01 8.14e-01 1.14e+00 1.71e+00 ph/cm2/s
90%_error_low -6.62e-02 -6.82e-02 -6.30e-02 -2.57e-01 -1.89e-01 -3.15e-01 ph/cm2/s
90%_error_hi 7.49e-02 6.74e-02 6.26e-02 3.31e-01 1.90e-01 3.42e-01 ph/cm2/s
Fluence CPL 6.06e-09 1.82e-08 3.99e-08 1.32e-07 1.02e-07 1.97e-07 erg/cm2
90%_error_low -2.30e-09 -3.38e-09 -7.07e-09 -8.88e-08 -1.77e-08 -8.98e-08 erg/cm2
90%_error_hi 2.17e-09 3.52e-09 7.41e-09 2.00e-07 1.75e-08 1.69e-07 erg/cm2
Peak flux CPL 1.30e-01 3.44e-01 4.34e-01 2.20e-01 1.07e+00 1.13e+00 ph/cm2/s
90%_error_low -7.32e-02 -8.46e-02 -8.13e-02 -1.32e-01 -1.96e-01 -2.38e-01 ph/cm2/s
90%_error_hi 9.00e-02 8.38e-02 8.47e-02 3.32e-01 1.98e-01 3.55e-01 ph/cm2/s
======================================================================
Special notes of this burst