batgrbproduct Analysis for Trigger=529582
Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
- 4) This page will be updated for up to 10 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time (local time): Fri Aug 3 19:40:39 EDT 2012
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger529582/GCN5_download_cron
======================================================================
Trigger: 00529582 Segment: 000
BAT Trigger Time: 365671345.6 [s; MET]
Trigger Stop: 365671353.792 [s; MET]
UTC: 2012-08-03T07:22:16.104060 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 269.565357237366 Dec: -6.71511030893272 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.28
Image Trigger?: NO
Rate S/N Ratio: 11.7898261225516 [ if not an image trigger ]
Image S/N Ratio: 7.28
Flight Position: [ source = BAT ]
RA: 269.565357237366 Dec: -6.71511030893272 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 269.523097477986 Dec: -6.72717010508776 [deg; J2000]
{ 17h 58m 05.5s , -06d 43' 37.8" }
+/- 2.24678197507563 [arcmin] (estimated 90% radius based on SNR)
+/- 1.29371068028771 [arcmin] (formal 1-sigma fit error)
SNR: 9.56948307058562
Angular difference between Flight and Ground position is 2.620059 arcmin
Partial Coding Fraction: 0.546875 [ including projection effects ]
Duration
T90: 8.89199990034103 +/- 2.43608946341629
Measured from: 1.64800012111664
to: 10.5400000214577 [s; relative to TRIGTIME]
T50: 4.22399997711182 +/- 1.74055274962072
Measured from: 3.35600006580353
to: 7.58000004291534 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 2.93599998950958
to: 3.93599998950958 [s; relative to TRIGTIME]
Total Fluence
Measured from: 1.09599995613098
to: 11.0879999995232 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.061109 0.129593 0.123959 0.053885
0.024745 0.023369 0.019919 0.016476 [error]
Peak 0.016856 0.025092 0.022604 0.011324
0.007896 0.007765 0.006412 0.005138 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
=== 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 Power-law 1.93e-08 5.01e-08 1.04e-07 5.56e-07 2.82e-07 7.30e-07 erg/cm2
Error 8.33e-09 1.27e-08 1.84e-08 2.53e-07 4.93e-08 2.55e-07 erg/cm2
Peak flux Power-law 1.79e-01 1.88e-01 1.40e-01 1.68e-01 5.71e-01 6.74e-01 ph/cm2/s
Error 1.12e-01 7.01e-02 5.45e-02 1.49e-01 1.91e-01 2.14e-01 ph/cm2/s
Fluence Cutoff-PL 1.93e-08 5.02e-08 1.05e-07 5.52e-07 7.26e-07 0.00e+00 erg/cm2
Error 6.70e-09 1.27e-08 1.47e-08 2.50e-07 2.50e-07 0.00e+00 erg/cm2
Peak flux Cutoff-PL 1.79e-01 1.88e-01 1.40e-01 1.66e-01 5.71e-01 6.73e-01 ph/cm2/s
Error 8.89e-02 7.03e-02 5.49e-02 1.30e-01 1.91e-01 2.27e-01 ph/cm2/s
Fluence Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 erg/cm2
Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 erg/cm2
Peak flux Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 0.940 0.346 - - 2.55e-03 4.87e-04 57.750 57
CPL 0.947 0.349 9999.4 0.0 2.57e-03 2.08e-03 57.770 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.429 0.645 - - 4.66e-03 1.47e-03 108.220 57
CPL 1.444 0.776 9999.4 0.0 4.64e-03 9.08e-03 108.230 56
Model : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index : photon index: E^-{Ph_index} (minus sign is not included in the 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 PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2 : Chi-Squared
dof : degree of freedom
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
T90 in the 50-300 keV band: 8.512000 sec.
T50 in the 50-300 keV band: 3.456000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 9.992 1.096 11.088
T90 8.892 1.648 10.540
T50 4.224 3.356 7.580
Peak 1.000 2.936 3.936
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
269.5231 -6.7272 0.0202 33.9 21.6 0.4028 9.6 TRIG_00529582
------------------------------------------
Foreground time interval of the image:
1.096 11.088 (delta_t = 9.992 [sec])
Background time interval of the image:
-239.600 1.096 (delta_t = 240.696 [sec])
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) The mask-weighted light curves are using the flight position.
- 3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 4) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
- 5) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
- 6) Time of each bin is in the middle of the bin.
1 s binning
From T0-310 s to T0+310 s
From T100_start - 20 s to T100_end + 30 s
Full time interval
64 ms binning
Full time interval
From T100_start to T100_end
From T0-5 sec to T0+5 sec
16 ms binning
From T100_start-5 s to T100_start+5 s
8 ms binning
From T100_start-3 s to T100_start+3 s
2 ms binning
From T100_start-1 s to T100_start+1 s
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) For long bursts, a spectral fit of the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
- 3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.
- 4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.
Time averaged spectrum fit using the pre-slew DRM
Power-law model
Time interval is from 1.096 sec. to 11.088 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.940165 ( -0.36281 0.328579 )
Norm@50keV : 2.54917E-03 ( -0.000496797 0.000476809 )
------------------------------------------------------------
# Chi-Squared = 57.75 using 59 PHA bins.
# Reduced chi-squared = 1.013 for 57 degrees of freedom
# Null hypothesis probability = 4.472144e-01
Photon flux (15-150 keV) in 9.992 sec: 0.292784 ( -0.0562827 0.0572528 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.815e-07 ( -4.91748e-08 4.93678e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.096 sec. to 11.088 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.946884 ( -0.376871 0.321228 )
Epeak [keV] : 9999.36 ( -10000 -10000 )
Norm@50keV : 2.56926E-03 ( -0.000457779 0.00369731 )
------------------------------------------------------------
# Chi-Squared = 57.77 using 59 PHA bins.
# Reduced chi-squared = 1.032 for 56 degrees of freedom
# Null hypothesis probability = 4.097904e-01
Photon flux (15-150 keV) in 9.992 sec: 0.292658 ( -0.056006 0.057226 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.25745e-07 ( -2.13565e-07 2.85975e-07 ) ergs/cm2
Band function
Time interval is from 1.096 sec. to 11.088 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.772806 ( 0.772806 0.772806 )
beta : -0.940161 ( 0.940161 0.362791 )
Epeak [keV] : 49.2125 ( -49.2125 -49.2125 )
Norm@50keV : 4.21738E-03 ( -0.00211035 0 )
------------------------------------------------------------
# Chi-Squared = 57.75 using 59 PHA bins.
# Reduced chi-squared = 1.050 for 55 degrees of freedom
# Null hypothesis probability = 3.738575e-01
Photon flux (15-150 keV) in 9.992 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 27.7775 (-6.52926 10.5663)
R^2/D10^2 : 5.03052E-03 (-0.00304506 0.00656763)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 65.07 using 59 PHA bins.
# Reduced chi-squared = 1.142 for 57 degrees of freedom
# Null hypothesis probability = 2.162580e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.354e-09 2.631e-09
25- 50 3.792e-08 1.411e-08
50-150 2.121e-07 7.875e-08
15-150 2.564e-07 9.452e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.998 ( )
Norm : 1.28454 (-1.28454 -1.28454)
------------------------------------------------------------
# Chi-Squared = 68.48 using 59 PHA bins.
# Reduced chi-squared = 1.201 for 57 degrees of freedom
# Null hypothesis probability = 1.418813e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.196e-08 1.746e-08
25- 50 6.148e-08 3.380e-08
50-150 1.348e-07 7.444e-08
15-150 2.283e-07 1.291e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.69636 (-3.29791 5.92437)
R1^2/D10^2 : 0.182000 (-0.153731 1.32517)
kT2 [keV] : 43.3272 (-15.5374 -43.3283)
R2^2/D10^2 : 1.26445E-03 (-0.00117826 0.00337137)
------------------------------------------------------------
# Chi-Squared = 56.64 using 59 PHA bins.
# Reduced chi-squared = 1.030 for 55 degrees of freedom
# Null hypothesis probability = 4.136358e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.178e-08 1.302e-08
25- 50 5.103e-08 2.928e-08
50-150 2.187e-07 1.186e-07
15-150 2.915e-07 1.512e-07
Peak spectrum fit
Power-law model
Time interval is from 2.936 sec. to 3.936 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.42896 ( -0.644446 0.64525 )
Norm@50keV : 4.65560E-03 ( -0.00147879 0.00146821 )
------------------------------------------------------------
# Chi-Squared = 108.22 using 59 PHA bins.
# Reduced chi-squared = 1.8986 for 57 degrees of freedom
# Null hypothesis probability = 5.016919e-05
Photon flux (15-150 keV) in 1 sec: 0.570804 ( -0.190804 0.192188 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.4728e-08 ( -1.53538e-08 1.5516e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 2.936 sec. to 3.936 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.44361 ( -0.919733 0.633025 )
Epeak [keV] : 9999.36 ( -9999.86 -9999.86 )
Norm@50keV : 4.63918E-03 ( -0.00147997 0.0166795 )
------------------------------------------------------------
# Chi-Squared = 108.23 using 59 PHA bins.
# Reduced chi-squared = 1.9326 for 56 degrees of freedom
# Null hypothesis probability = 3.526396e-05
Photon flux (15-150 keV) in 1 sec: 0.570779 ( -0.191035 0.191167 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.22453e-08 ( -4.47949e-08 9.27177e-08 ) ergs/cm2
Band function
Time interval is from 2.936 sec. to 3.936 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.17279 ( 1.17283 1.17283 )
beta : -1.42862 ( 1.42887 0.644581 )
Epeak [keV] : 28.4857 ( -28.4849 -28.4849 )
Norm@50keV : 9.37540E-03 ( -0.00937777 586.455 )
------------------------------------------------------------
# Chi-Squared = 108.22 using 59 PHA bins.
# Reduced chi-squared = 1.9676 for 55 degrees of freedom
# Null hypothesis probability = 2.465359e-05
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 23.4827 (-8.67892 15.9954)
R^2/D10^2 : 1.40107E-02 (-0.0139947 0.0498439)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 112.52 using 59 PHA bins.
# Reduced chi-squared = 1.9741 for 57 degrees of freedom
# Null hypothesis probability = 1.647166e-05
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.386e-09 9.070e-10
25- 50 7.607e-09 4.700e-09
50-150 3.130e-08 1.988e-08
15-150 4.029e-08 2.564e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-199.999 -199.999)
Norm : 2.35188 (-0.748307 0.806053)
------------------------------------------------------------
# Chi-Squared = 108.84 using 59 PHA bins.
# Reduced chi-squared = 1.9095 for 57 degrees of freedom
# Null hypothesis probability = 4.279528e-05
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.856e-09 3.510e-09
25- 50 1.127e-08 6.855e-09
50-150 2.471e-08 1.481e-08
15-150 4.183e-08 2.358e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.95988 (-2.30446 3.25614)
R1^2/D10^2 : 2.85126 (-2.55704 13.7884)
kT2 [keV] : 32.0503 (-12.3868 55.0749)
R2^2/D10^2 : 4.64697E-03 (-0.00413458 0.00967678)
------------------------------------------------------------
# Chi-Squared = 105.66 using 59 PHA bins.
# Reduced chi-squared = 1.9210 for 55 degrees of freedom
# Null hypothesis probability = 4.807014e-05
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.430e-09 4.582e-09
25- 50 8.834e-09 4.855e-09
50-150 3.215e-08 1.969e-08
15-150 4.841e-08 2.611e-08
Plot creation:
Fri Aug 3 20:02:14 EDT 2012