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 13 04:24:10 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger522578
======================================================================
Trigger: 00522578 Segment: 000
BAT Trigger Time: 359272791.168 [s; MET]
Trigger Stop: 359272791.68 [s; MET]
UTC: 2012-05-21T05:59:42.937680 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 148.69332117108 Dec: -49.4193802244313 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 11.48
Image Trigger?: NO
Rate S/N Ratio: 24.6981780704569 [ if not an image trigger ]
Image S/N Ratio: 11.48
Analysis Position: [ source = BAT ]
RA: 148.69332117108 Dec: -49.4193802244313 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 148.686940886453 Dec: -49.4244012807195 [deg; J2000]
{ 09h 54m 44.9s , -49d 25' 27.8" }
+/- 1.75349438379915 [arcmin] (estimated 90% radius based on SNR)
+/- 0.740366609476014 [arcmin] (formal 1-sigma fit error)
SNR: 13.6358919896314
Angular difference between the analysis and refined position is 0.390856 arcmin
Partial Coding Fraction: 1 [ including projection effects ]
Duration
T90: 0.51199996471405 +/- 0.143108374017273
Measured from: -0.0079999566078186
to: 0.504000008106232 [s; relative to TRIGTIME]
T50: 0.25600004196167 +/- 0.0640000104904175
Measured from: 0.0559999942779541
to: 0.312000036239624 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.187999963760376
to: 0.812000036239624 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.0079999566078186
to: 0.568000018596649 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.018330 0.042938 0.041515 0.015896
0.004411 0.004847 0.004633 0.004105 [error]
Peak 0.012586 0.046076 0.046788 0.018408
0.005605 0.005971 0.005565 0.004875 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 0.576 -0.008 0.568
T90 0.512 -0.008 0.504
T50 0.256 0.056 0.312
Peak 1.000 -0.188 0.812
====== 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 -1.009 -0.219 0.225 - - - 1.27e-02 -1.59e-03 1.59e-03 47.100 57
CPL -0.391 -0.714 1.014 142.866 N/A N/A 2.44e-02 N/A N/A 45.470 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 -0.864 -0.244 0.256 - - - 7.75e-03 -1.14e-03 1.13e-03 42.380 57
CPL 0.098 -0.973 1.283 127.855 -43.080 5269.475 2.00e-02 -1.21e-02 4.45e-02 39.570 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 5.89e-09 1.46e-08 2.91e-08 1.44e-07 7.86e-08 1.94e-07 erg/cm2
90%_error_low -1.40e-09 -2.17e-09 -4.28e-09 -4.26e-08 -1.11e-08 -4.57e-08 erg/cm2
90%_error_hi 1.51e-09 2.13e-09 4.24e-09 5.44e-08 1.13e-08 5.62e-08 erg/cm2
Peak flux PL 1.74e-01 2.56e-01 2.82e-01 5.82e-01 8.89e-01 1.29e+00 ph/cm2/s
90%_error_low -5.01e-02 -4.82e-02 -4.25e-02 -1.70e-01 -1.30e-01 -2.05e-01 ph/cm2/s
90%_error_hi 5.62e-02 4.76e-02 4.22e-02 2.14e-01 1.30e-01 2.21e-01 ph/cm2/s
Fluence CPL 5.12e-09 1.53e-08 3.07e-08 6.40e-08 7.52e-08 1.15e-07 erg/cm2
90%_error_low -1.70e-09 -2.43e-09 -4.84e-09 -3.98e-08 -1.23e-08 -4.14e-08 erg/cm2
90%_error_hi 1.80e-09 2.51e-09 5.00e-09 9.68e-08 1.22e-08 9.82e-08 erg/cm2
Peak flux CPL 1.32e-01 2.64e-01 3.11e-01 2.59e-01 8.52e-01 9.66e-01 ph/cm2/s
90%_error_low -5.95e-02 -5.50e-02 -5.23e-02 -1.39e-01 -1.35e-01 -2.00e-01 ph/cm2/s
90%_error_hi 6.86e-02 5.46e-02 5.42e-02 3.45e-01 1.36e-01 3.57e-01 ph/cm2/s
======================================================================
Special notes of this burst