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: Mon Jan 20 11:09:18 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger271019
======================================================================
Trigger: 00271019 Segment: 000
BAT Trigger Time: 195895737.92 [s; MET]
Trigger Stop: 195895738.432 [s; MET]
UTC: 2007-03-18T07:28:56.088640 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 48.5402261665742 Dec: -42.961988565526 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.03
Image Trigger?: NO
Rate S/N Ratio: 17.9443584449264 [ if not an image trigger ]
Image S/N Ratio: 10.03
Analysis Position: [ source = BAT ]
RA: 48.5402261665742 Dec: -42.961988565526 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 48.4858797791712 Dec: -42.942277109951 [deg; J2000]
{ 03h 13m 56.6s , -42d 56' 32.2" }
+/- 0.76802989802986 [arcmin] (estimated 90% radius based on SNR)
+/- 0.229677613305789 [arcmin] (formal 1-sigma fit error)
SNR: 44.3469660422778
Angular difference between the analysis and refined position is 2.663609 arcmin
Partial Coding Fraction: 0.8046875 [ including projection effects ]
Duration
T90: 130.368000030518 +/- 28.8086031720255
Measured from: 0.719999998807907
to: 131.088000029325 [s; relative to TRIGTIME]
T50: 35.0720000267029 +/- 4.93464486631663
Measured from: 5.32800000905991
to: 40.4000000357628 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.21200001239777
to: 2.21200001239777 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.00799998641014
to: 171.536000013351 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.015939 1.533896 1.198511 0.375500
0.060796 0.063851 0.057449 0.052009 [error]
Peak 0.045642 0.073220 0.064797 0.018952
0.005715 0.006430 0.005927 0.004918 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 172.544 -1.008 171.536
T90 130.368 0.720 131.088
T50 35.072 5.328 40.400
Peak 1.000 1.212 2.212
====== 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 -1.376 -0.088 0.088 - - - 1.56e-03 -7.45e-05 7.44e-05 43.940 57
CPL -1.257 -0.163 0.336 330.081 -330.081 -330.081 1.78e-03 -2.82e-04 7.77e-04 43.540 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 -1.325 -0.158 0.158 - - - 1.34e-02 -1.26e-03 1.26e-03 64.720 57
CPL -0.806 -0.576 0.682 118.368 -41.493 -118.368 2.42e-02 -1.13e-02 2.71e-02 62.490 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 3.07e-07 6.08e-07 9.37e-07 3.17e-06 2.62e-06 5.02e-06 erg/cm2
90%_error_low -2.72e-08 -3.19e-08 -5.73e-08 -4.15e-07 -1.39e-07 -4.55e-07 erg/cm2
90%_error_hi 2.80e-08 3.17e-08 5.71e-08 4.58e-07 1.40e-07 4.91e-07 erg/cm2
Peak flux PL 4.66e-01 5.21e-01 4.16e-01 5.50e-01 1.61e+00 1.95e+00 ph/cm2/s
90%_error_low -7.37e-02 -5.26e-02 -4.84e-02 -1.21e-01 -1.50e-01 -1.91e-01 ph/cm2/s
90%_error_hi 7.71e-02 5.22e-02 4.80e-02 1.40e-01 1.50e-01 1.94e-01 ph/cm2/s
Fluence CPL 2.99e-07 6.14e-07 9.45e-07 2.64e-06 2.60e-06 4.50e-06 erg/cm2
90%_error_low -3.31e-08 -3.53e-08 -6.09e-08 -9.89e-07 -1.55e-07 -9.94e-07 erg/cm2
90%_error_hi 2.80e-08 3.59e-08 6.19e-08 1.07e-06 1.54e-07 6.71e-07 erg/cm2
Peak flux CPL 4.23e-01 5.46e-01 4.36e-01 3.15e-01 1.57e+00 1.72e+00 ph/cm2/s
90%_error_low -8.87e-02 -6.07e-02 -5.48e-02 -1.44e-01 -7.77e-02 -2.18e-01 ph/cm2/s
90%_error_hi 9.10e-02 6.25e-02 5.62e-02 2.81e-01 1.54e-01 3.11e-01 ph/cm2/s
======================================================================
Special notes of this burst