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 22:41:51 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger451794
======================================================================
Trigger: 00451794 Segment: 000
BAT Trigger Time: 325032138.592 [s; MET]
Trigger Stop: 325032138.624 [s; MET]
UTC: 2011-04-20T22:42:11.716260 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 320.049201406344 Dec: -41.2645076280927 [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: 34.1906419945575 [ if not an image trigger ]
Image S/N Ratio: 8.11
Analysis Position: [ source = BAT ]
RA: 320.049201406344 Dec: -41.2645076280927 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 320.045312656643 Dec: -41.2768481831182 [deg; J2000]
{ 21h 20m 10.9s , -41d 16' 36.7" }
+/- 2.1759011187064 [arcmin] (estimated 90% radius based on SNR)
+/- 0.963001866154427 [arcmin] (formal 1-sigma fit error)
SNR: 10.0179008564505
Angular difference between the analysis and refined position is 0.760917 arcmin
Partial Coding Fraction: 0.359375 [ including projection effects ]
Duration
T90: 0.0839999318122864 +/- 0.0215406475404197
Measured from: 0
to: 0.0839999318122864 [s; relative to TRIGTIME]
T50: 0.0399999022483826 +/- 0.0164924559253201
Measured from: 0.00800001621246338
to: 0.0479999184608459 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.449999988079071
to: 0.550000011920929 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.00400000810623169
to: 0.0999999642372131 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.013226 0.024934 0.045513 0.009519
0.004074 0.004631 0.005596 0.003927 [error]
Peak 0.022554 0.014398 0.048743 -0.007308
0.009217 0.009760 0.009733 0.008372 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 0.104 -0.004 0.100
T90 0.084 0.000 0.084
T50 0.040 0.008 0.048
Peak 1.000 -0.450 0.550
====== 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: 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 -1.122 -0.272 0.271 - - - 5.09e-02 -9.02e-03 9.01e-03 74.540 57
CPL 1.642 -1.910 3.361 78.296 -12.636 41.024 7.55e-01 -7.55e-01 1.10e+01 67.510 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 -1.037 -0.598 0.607 - - - 5.69e-03 -2.01e-03 2.00e-03 61.490 57
CPL 6.100 -4.857 -6.100 79.986 -13.293 18.552 1.06e+00 -1.06e+00 5.78e+01 57.050 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 4.75e-09 1.10e-08 2.02e-08 8.90e-08 5.50e-08 1.25e-07 erg/cm2
90%_error_low -1.40e-09 -2.20e-09 -4.11e-09 -3.27e-08 -1.06e-08 -3.64e-08 erg/cm2
90%_error_hi 1.53e-09 2.16e-09 4.05e-09 4.21e-08 1.07e-08 4.42e-08 erg/cm2
Peak flux PL 1.51e-01 2.00e-01 1.95e-01 3.39e-01 6.56e-01 8.84e-01 ph/cm2/s
90%_error_low -8.74e-02 -8.51e-02 -7.52e-02 -2.10e-01 -2.34e-01 -1.61e-01 ph/cm2/s
90%_error_hi 1.15e-01 8.43e-02 7.36e-02 3.41e-01 2.37e-01 3.54e-01 ph/cm2/s
Fluence CPL 2.20e-09 1.24e-08 2.70e-08 1.44e-08 5.27e-08 5.60e-08 erg/cm2
90%_error_low -1.64e-09 -3.20e-09 -6.40e-09 -9.03e-09 -1.07e-08 -1.33e-08 erg/cm2
90%_error_hi 2.18e-09 2.83e-09 7.19e-09 2.51e-08 1.10e-08 2.41e-08 erg/cm2
Peak flux CPL 1.29e-03 6.68e-02 3.42e-01 4.35e-02 4.50e-01 4.48e-01 ph/cm2/s
90%_error_low -1.29e-03 -3.22e-02 -1.14e-01 -4.35e-02 -1.35e-01 -1.33e-01 ph/cm2/s
90%_error_hi 7.16e-02 1.53e-01 1.01e-01 1.07e-01 2.08e-01 2.34e-01 ph/cm2/s
======================================================================
Special notes of this burst