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 15:01:08 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger358520
======================================================================
Trigger: 00358520 Segment: 000
BAT Trigger Time: 270427342.976 [s; MET]
Trigger Stop: 270427345.024 [s; MET]
UTC: 2009-07-27T22:42:18.028360 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 315.97210799452 Dec: 64.9160517614425 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.11
Image Trigger?: NO
Rate S/N Ratio: 7.48331477354788 [ if not an image trigger ]
Image S/N Ratio: 8.11
Analysis Position: [ source = BAT ]
RA: 315.97210799452 Dec: 64.9160517614425 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 315.921818678116 Dec: 64.9389225031386 [deg; J2000]
{ 21h 03m 41.2s , +64d 56' 20.1" }
+/- 2.23051518935367 [arcmin] (estimated 90% radius based on SNR)
+/- 1.45813174522031 [arcmin] (formal 1-sigma fit error)
SNR: 9.66933678508391
Angular difference between the analysis and refined position is 1.875634 arcmin
Partial Coding Fraction: 0.8359375 [ including projection effects ]
Duration
T90: 301.879999995232 +/- 22.9214466904804
Measured from: 0.891999959945679
to: 302.771999955177 [s; relative to TRIGTIME]
T50: 119.60799998045 +/- 135.6643635536
Measured from: 147.367999970913
to: 266.975999951363 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.11599999666214
to: 1.11599999666214 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.3400000333786
to: 318.884000003338 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.564599 0.661182 0.735873 0.154237
0.093052 0.098112 0.091003 0.089337 [error]
Peak 0.017544 0.024198 0.023149 0.016732
0.005652 0.006140 0.005852 0.005497 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 320.224 -1.340 318.884
T90 301.880 0.892 302.772
T50 119.608 147.368 266.976
Peak 1.000 0.116 1.116
====== 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 -1.237 -0.239 0.242 - - - 4.38e-04 -5.89e-05 5.88e-05 56.590 57
CPL -0.983 -0.480 1.079 209.063 -209.063 -209.063 5.82e-04 -1.99e-04 1.26e-03 56.370 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 -1.244 -0.536 0.548 - - - 4.40e-03 -1.23e-03 1.21e-03 65.350 57
CPL -1.257 -0.524 0.865 9999.360 -9999.360 -9999.360 4.39e-03 -1.20e-03 1.27e-02 65.360 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 1.40e-07 3.02e-07 5.13e-07 2.00e-06 1.41e-06 2.96e-06 erg/cm2
90%_error_low -3.32e-08 -4.46e-08 -8.78e-08 -6.62e-07 -2.17e-07 -7.35e-07 erg/cm2
90%_error_hi 3.54e-08 4.38e-08 8.68e-08 8.70e-07 2.21e-07 9.15e-07 erg/cm2
Peak flux PL 1.42e-01 1.66e-01 1.40e-01 2.01e-01 5.20e-01 6.49e-01 ph/cm2/s
90%_error_low -6.84e-02 -5.25e-02 -5.02e-02 -1.18e-01 -1.42e-01 -1.89e-01 ph/cm2/s
90%_error_hi 7.80e-02 4.95e-02 4.81e-02 2.02e-01 1.42e-01 2.08e-01 ph/cm2/s
Fluence CPL 1.33e-07 3.10e-07 5.23e-07 1.36e-06 1.38e-06 2.33e-06 erg/cm2
90%_error_low -4.14e-08 -4.98e-08 -9.38e-08 -9.59e-07 -2.41e-07 -9.92e-07 erg/cm2
90%_error_hi 4.03e-08 5.29e-08 9.76e-08 8.24e-07 2.36e-07 1.12e-06 erg/cm2
Peak flux CPL 1.49e-01 1.66e-01 1.37e-01 2.27e-01 5.20e-01 6.82e-01 ph/cm2/s
90%_error_low N/A N/A N/A N/A -1.42e-01 -3.14e-01 ph/cm2/s
90%_error_hi N/A N/A N/A N/A 1.42e-01 2.22e-01 ph/cm2/s
======================================================================
Special notes of this burst