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 07:26:32 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger510922
======================================================================
Trigger: 00510922 Segment: 000
BAT Trigger Time: 347163362.752 [s; MET]
Trigger Stop: 347163366.848 [s; MET]
UTC: 2012-01-02T02:15:55.012820 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 276.200903597835 Dec: 24.7316362946046 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.2
Image Trigger?: NO
Rate S/N Ratio: 12.2882057274445 [ if not an image trigger ]
Image S/N Ratio: 9.2
Analysis Position: [ source = BAT ]
RA: 276.200903597835 Dec: 24.7316362946046 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 276.223711834673 Dec: 24.7133789997417 [deg; J2000]
{ 18h 24m 53.7s , +24d 42' 48.2" }
+/- 0.619529468185137 [arcmin] (estimated 90% radius based on SNR)
+/- 0.22738095638862 [arcmin] (formal 1-sigma fit error)
SNR: 60.2799260066436
Angular difference between the analysis and refined position is 1.656862 arcmin
Partial Coding Fraction: 0.7890625 [ including projection effects ]
Duration
T90: 38.7080000042915 +/- 3.50732263817963
Measured from: 6.52799999713898
to: 45.2360000014305 [s; relative to TRIGTIME]
T50: 4.86799991130829 +/- 0.4040792083472
Measured from: 30.8200000524521
to: 35.6879999637604 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 32.7520000338554
to: 33.7520000338554 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.76800000667572
to: 53.9399999976158 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.946801 2.644586 1.825753 0.516178
0.053010 0.054789 0.047970 0.037758 [error]
Peak 0.272516 0.439698 0.405326 0.135456
0.011153 0.013263 0.012793 0.009329 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 53.172 0.768 53.940
T90 38.708 6.528 45.236
T50 4.868 30.820 35.688
Peak 1.000 32.752 33.752
====== 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 -1.590 -0.052 0.052 - - - 8.68e-03 -2.34e-04 2.34e-04 55.990 57
CPL -1.588 -0.052 0.053 9999.360 -9999.360 -9999.360 8.69e-03 -2.27e-04 1.60e-03 56.010 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: N/A)
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 -1.220 -0.062 0.062 - - - 8.66e-02 -2.91e-03 2.91e-03 63.860 57
CPL -1.217 -0.061 0.064 9999.360 -9999.360 -9999.360 8.69e-02 -2.75e-03 1.84e-02 63.900 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 6.41e-07 1.11e-06 1.48e-06 4.02e-06 4.32e-06 7.26e-06 erg/cm2
90%_error_low -3.43e-08 -3.44e-08 -5.06e-08 -3.08e-07 -1.22e-07 -3.36e-07 erg/cm2
90%_error_hi 3.51e-08 3.43e-08 5.05e-08 3.25e-07 1.22e-07 3.49e-07 erg/cm2
Peak flux PL 6.64e-04 1.01e-02 1.14e-01 1.01e+01 5.29e-01 9.90e+00 ph/cm2/s
90%_error_low N/A N/A N/A N/A N/A N/A ph/cm2/s
90%_error_hi N/A N/A N/A N/A N/A N/A ph/cm2/s
Fluence CPL 6.40e-07 1.11e-06 1.48e-06 4.01e-06 4.33e-06 7.33e-06 erg/cm2
90%_error_low N/A -3.86e-08 -5.68e-08 N/A -1.50e-07 -1.19e-06 erg/cm2
90%_error_hi N/A 4.22e-08 6.44e-08 N/A 1.33e-07 1.62e-07 erg/cm2
Peak flux CPL 2.73e+00 3.24e+00 2.78e+00 4.20e+00 1.02e+01 1.30e+01 ph/cm2/s
90%_error_low N/A -1.38e-01 N/A -9.38e-01 -5.81e-01 -1.03e+00 ph/cm2/s
90%_error_hi N/A 1.35e-01 N/A 5.94e-02 4.06e-01 2.83e-01 ph/cm2/s
======================================================================
Special notes of this burst