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 Apr 12 15:21:45 EDT 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger736843
======================================================================
Trigger: 00736843 Segment: 000
BAT Trigger Time: 507991168.52 [s; MET]
Trigger Stop: 507991168.584 [s; MET]
UTC: 2017-02-05T12:39:09.951640 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 262.150840978483 Dec: -0.0526188988923711 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.3
Image Trigger?: NO
Rate S/N Ratio: 10.8627804912002 [ if not an image trigger ]
Image S/N Ratio: 8.3
Analysis Position: [ source = BAT ]
RA: 262.150840978483 Dec: -0.0526188988923711 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 262.157909766478 Dec: -0.0577473101881337 [deg; J2000]
{ 17h 28m 37.9s , -00d 03' 27.9" }
+/- 0.893896621379505 [arcmin] (estimated 90% radius based on SNR)
+/- 0.262825368615402 [arcmin] (formal 1-sigma fit error)
SNR: 35.7032669757834
Angular difference between the analysis and refined position is 0.523990 arcmin
Partial Coding Fraction: 0.9140625 [ including projection effects ]
Duration
T90: 26.1279999613762 +/- 3.1836105299692
Measured from: -0.11599999666214
to: 26.0119999647141 [s; relative to TRIGTIME]
T50: 17.1159999370575 +/- 0.621868129887804
Measured from: 3.36800003051758
to: 20.4839999675751 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.296000003814697
to: 0.703999996185303 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.42399996519089
to: 46.3960000276566 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.383321 2.742362 1.492745 0.282991
0.062412 0.061748 0.054804 0.053748 [error]
Peak 0.143969 0.210002 0.146369 0.036744
0.010594 0.011224 0.010283 0.009050 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 47.820 -1.424 46.396
T90 26.128 -0.116 26.012
T50 17.116 3.368 20.484
Peak 1.000 -0.296 0.704
====== 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 -1.852 -0.065 0.065 - - - 8.60e-03 -2.90e-04 2.89e-04 39.110 57
CPL -1.633 -0.130 0.270 79.519 -21.125 -79.519 1.11e-02 -2.66e-03 4.09e-03 36.940 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 -1.489 -0.116 0.115 - - - 3.45e-02 -2.26e-03 2.24e-03 42.670 57
CPL -1.279 -0.270 0.480 167.559 -167.559 -167.559 4.42e-02 -1.16e-02 3.29e-02 42.010 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 7.31e-07 1.09e-06 1.20e-06 2.51e-06 3.78e-06 5.53e-06 erg/cm2
90%_error_low -4.17e-08 -3.53e-08 -5.68e-08 -2.52e-07 -1.28e-07 -2.94e-07 erg/cm2
90%_error_hi 4.26e-08 3.52e-08 5.70e-08 2.72e-07 1.29e-07 3.09e-07 erg/cm2
Peak flux PL 1.40e+00 1.42e+00 1.01e+00 1.15e+00 4.29e+00 4.99e+00 ph/cm2/s
90%_error_low -1.52e-01 -9.48e-02 -8.56e-02 -1.90e-01 -2.72e-01 -3.22e-01 ph/cm2/s
90%_error_hi 1.57e-01 9.43e-02 8.52e-02 2.13e-01 2.72e-01 3.24e-01 ph/cm2/s
Fluence CPL 7.04e-07 1.10e-06 1.20e-06 1.76e-06 3.69e-06 4.77e-06 erg/cm2
90%_error_low -5.19e-08 -4.09e-08 -5.86e-08 -5.67e-07 -1.64e-07 -6.00e-07 erg/cm2
90%_error_hi 5.27e-08 4.14e-08 5.87e-08 8.30e-07 1.64e-07 8.67e-07 erg/cm2
Peak flux CPL 1.35e+00 1.45e+00 1.03e+00 8.78e-01 4.24e+00 4.71e+00 ph/cm2/s
90%_error_low -1.83e-01 -1.11e-01 -9.05e-02 -3.70e-01 -2.90e-01 -4.89e-01 ph/cm2/s
90%_error_hi 1.84e-01 1.13e-01 9.21e-02 3.32e-01 2.89e-01 4.20e-01 ph/cm2/s
======================================================================
Special notes of this burst