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: Sun Jan 19 17:09:08 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger350853
======================================================================
Trigger: 00350853 Segment: 000
BAT Trigger Time: 262673624.576 [s; MET]
Trigger Stop: 262673625.6 [s; MET]
UTC: 2009-04-29T04:53:39.877600 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 90.5593470267977 Dec: -52.3860905103926 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 5.64
Image Trigger?: NO
Rate S/N Ratio: 8.30662386291807 [ if not an image trigger ]
Image S/N Ratio: 5.64
Analysis Position: [ source = BAT ]
RA: 90.5593470267977 Dec: -52.3860905103926 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 90.5683045252455 Dec: -52.3930623624934 [deg; J2000]
{ 06h 02m 16.4s , -52d 23' 35.0" }
+/- 1.69923262039163 [arcmin] (estimated 90% radius based on SNR)
+/- 0.672444583905834 [arcmin] (formal 1-sigma fit error)
SNR: 14.2621748394728
Angular difference between the analysis and refined position is 0.531571 arcmin
Partial Coding Fraction: 1 [ including projection effects ]
Duration
T90: 184 +/- 48.5077313425396
Measured from: -8.57600000500679
to: 175.423999994993 [s; relative to TRIGTIME]
T50: 78 +/- 38.2099463490856
Measured from: 2.42399999499321
to: 80.4239999949932 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.57600000500679
to: 0.42399999499321 [s; relative to TRIGTIME]
Total Fluence
Measured from: -13.5760000050068
to: 203.423999994993 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.500451 0.725773 0.438136 0.245794
0.071867 0.074460 0.066249 0.059881 [error]
Peak 0.017834 0.028302 0.023782 0.007752
0.005080 0.005362 0.004775 0.004158 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 217.000 -13.576 203.424
T90 184.000 -8.576 175.424
T50 78.000 2.424 80.424
Peak 1.000 -0.576 0.424
====== 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 -1.519 -0.221 0.218 - - - 5.29e-04 -6.72e-05 6.61e-05 51.620 57
CPL -1.513 -1.147 0.655 9998.890 -9998.890 -9998.890 5.30e-04 -3.74e-04 6.36e-04 51.620 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 -1.160 -0.369 0.390 - - - 4.82e-03 -9.85e-04 9.85e-04 65.220 57
CPL -1.155 -0.372 0.392 9999.300 -9999.300 -9999.300 4.85e-03 -9.90e-04 1.22e-03 65.230 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 1.49e-07 2.71e-07 3.78e-07 1.10e-06 1.09e-06 1.90e-06 erg/cm2
90%_error_low -2.88e-08 -3.27e-08 -6.48e-08 -3.55e-07 -1.52e-07 -4.16e-07 erg/cm2
90%_error_hi 3.00e-08 3.25e-08 6.47e-08 4.59e-07 1.55e-07 5.04e-07 erg/cm2
Peak flux PL 1.43e-01 1.77e-01 1.58e-01 2.45e-01 5.63e-01 7.24e-01 ph/cm2/s
90%_error_low -5.48e-02 -4.38e-02 -3.85e-02 -1.07e-01 -1.18e-01 -1.57e-01 ph/cm2/s
90%_error_hi 6.11e-02 4.21e-02 3.76e-02 1.56e-01 1.18e-01 1.67e-01 ph/cm2/s
Fluence CPL 1.49e-07 2.66e-07 3.77e-07 1.29e-06 1.10e-06 1.92e-06 erg/cm2
90%_error_low N/A -3.63e-08 N/A -9.31e-07 -2.35e-07 -7.86e-07 erg/cm2
90%_error_hi N/A 5.10e-08 N/A 5.50e-08 1.96e-07 2.19e-07 erg/cm2
Peak flux CPL 1.47e-01 1.75e-01 1.57e-01 2.44e-01 5.66e-01 7.44e-01 ph/cm2/s
90%_error_low -5.90e-02 -4.49e-02 -3.92e-02 N/A -1.27e-01 -2.49e-01 ph/cm2/s
90%_error_hi 5.76e-02 4.87e-02 4.29e-02 N/A 1.22e-01 1.54e-01 ph/cm2/s
======================================================================
Special notes of this burst