batgrbproduct Analysis for Trigger=529813
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): Mon Aug 6 09:55:41 EDT 2012
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger529813/batgroup_hand_proc
======================================================================
Trigger: 00529813 Segment: 000
BAT Trigger Time: 365808512.896 [s; MET]
Trigger Stop: 365808513.408 [s; MET]
UTC: 2012-08-04T21:28:23.394340 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 245.372550221826 Dec: -51.3676319909562 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 5.88
Image Trigger?: NO
Rate S/N Ratio: 16.062378404209 [ if not an image trigger ]
Image S/N Ratio: 5.88
Flight Position: [ source = BAT ]
RA: 245.372550221826 Dec: -51.3676319909562 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 245.405744388095 Dec: -51.3429898852553 [deg; J2000]
{ 16h 21m 37.4s , -51d 20' 34.8" }
+/- 5.60873039709874 [arcmin] (estimated 90% radius based on SNR)
+/- 4.80089037573512 [arcmin] (formal 1-sigma fit error)
SNR: 2.5900721317238
Angular difference between Flight and Ground position is 1.932094 arcmin
Partial Coding Fraction: 0.9921875 [ including projection effects ]
Duration
T90: 0.51199996471405 +/- 35.7770876399966
Measured from: 0
to: 0.51199996471405 [s; relative to TRIGTIME]
T50: 0.51199996471405 +/- 16
Measured from: 0
to: 0.51199996471405 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 0.51199996471405 second)
Measured from: 0
to: 0.51199996471405 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 0.51199996471405 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.003244 -0.002972 0.013961 0.025559
0.005276 0.005426 0.005182 0.006180 [error]
Peak 0.003244 -0.002972 0.013961 0.025559
0.005276 0.005426 0.005182 0.006180 [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 1.19e-10 9.85e-10 7.27e-09 3.04e-07 2.71e-08 3.13e-07 erg/cm2
Error 4.26e-10 1.62e-09 6.24e-09 3.49e-07 2.05e-08 3.52e-07 erg/cm2
Peak flux Power-law 7.12e-03 3.10e-02 1.14e-01 1.51e+00 3.33e-01 1.66e+00 ph/cm2/s
Error 2.62e-02 5.32e-02 9.48e-02 1.63e+00 2.72e-01 1.69e+00 ph/cm2/s
Fluence Cutoff-PL 4.05e-11 7.15e-10 8.12e-09 1.09e-07 1.18e-07 0.00e+00 erg/cm2
Error 2.16e-10 1.59e-09 7.47e-09 8.27e-07 1.10e-06 0.00e+00 erg/cm2
Peak flux Cutoff-PL 2.37e-03 2.17e-02 1.26e-01 6.70e-01 3.41e-01 7.94e-01 ph/cm2/s
Error 2.51e-02 5.19e-02 1.32e-01 5.52e+00 2.69e-01 3.54e+00 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 -0.884 1.394 - - 1.60e-03 2.00e-03 77.610 57
CPL -2.480 0.000 262.7 0.0 3.35e-03 3.15e+00 77.470 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL -0.884 1.394 - - 1.60e-03 2.00e-03 77.610 57
CPL -2.480 0.000 262.7 0.0 3.35e-03 3.14e+00 77.470 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 0.512 0.000 0.512
T90 0.512 0.000 0.512
T50 0.512 0.000 0.512
Peak 0.512 0.000 0.512
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
245.4057 -51.3430 0.0740 18.1403 -153.8429 0.0292504 2.590 TRIG_00529813
Foreground time interval of the image:
0.000 0.512 (delta_t = 0.512 [sec])
Background time interval of the image:
-108.795 -8.896 (delta_t = 99.899 [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 0.000 sec. to 0.512 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.883522 ( -1.45103 1.33614 )
Norm@50keV : 1.60445E-03 ( -0.00160293 0.00239564 )
------------------------------------------------------------
# Chi-Squared = 77.61 using 59 PHA bins.
# Reduced chi-squared = 1.362 for 57 degrees of freedom
# Null hypothesis probability = 3.611194e-02
Photon flux (15-150 keV) in 0.512 sec: 0.332758 ( -0.332758 0.210894 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.7068e-08 ( -2.7068e-08 1.3915e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.512 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -2.47966 ( )
Epeak [keV] : 262.711 ( -259.279 -259.279 )
Norm@50keV : 3.34693E-03 ( -0.00345286 6.28926 )
------------------------------------------------------------
# Chi-Squared = 77.47 using 59 PHA bins.
# Reduced chi-squared = 1.383 for 56 degrees of freedom
# Null hypothesis probability = 3.030142e-02
Photon flux (15-150 keV) in 0.512 sec: 0.340519 ( -0.340519 0.196536 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17766e-07 ( -1.17766e-07 2.0922e-06 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.512 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.43024 ( -0.359819 -0.359819 )
beta : -8.84369 ( -5.14162 0.609987 )
Epeak [keV] : 279.266 ( -169.303 -279.266 )
Norm@50keV : 3.04872E-03 ( -0.00304872 745.438 )
------------------------------------------------------------
# Chi-Squared = 77.47 using 59 PHA bins.
# Reduced chi-squared = 1.409 for 55 degrees of freedom
# Null hypothesis probability = 2.460329e-02
Photon flux (15-150 keV) in 0.512 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] : 169.437 ( )
R^2/D10^2 : 2.40991E-04 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 77.59 using 59 PHA bins.
# Reduced chi-squared = 1.361 for 57 degrees of freedom
# Null hypothesis probability = 3.622984e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.214e-10 5.978e-11
25- 50 1.091e-10 5.855e-16
50-150 2.530e-12 5.399e-16
15-150 3.331e-10 5.376e-12
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-199.998 -199.998)
Norm : 0.898179 (-0.898204 1.00315)
------------------------------------------------------------
# Chi-Squared = 85.70 using 59 PHA bins.
# Reduced chi-squared = 1.504 for 57 degrees of freedom
# Null hypothesis probability = 8.284367e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.145e-09 1.091e-09
25- 50 2.203e-09 1.956e-09
50-150 4.831e-09 4.157e-09
15-150 8.179e-09 6.902e-09
Double BB
R1^2/D10^2 : 1.95918E-04 (-8.31706e-07 -8.31706e-07)
kT2 [keV] : 1.21793 ( )
R2^2/D10^2 : 1.37827E-05 (-3.57999e-06 -3.57999e-06)
------------------------------------------------------------
# Chi-Squared = 77.72 using 59 PHA bins.
# Chi-Squared = 77.59 using 59 PHA bins.
# Chi-Squared = 77.58 using 59 PHA bins.
# Reduced chi-squared = 1.413 for 55 degrees of freedom
# Reduced chi-squared = 1.411 for 55 degrees of freedom
# Reduced chi-squared = 1.411 for 55 degrees of freedom
# Null hypothesis probability = 2.354348e-02
# Null hypothesis probability = 2.408054e-02
# Null hypothesis probability = 2.413425e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 0.512 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.883522 ( -1.45103 1.33614 )
Norm@50keV : 1.60445E-03 ( -0.00160293 0.00239564 )
------------------------------------------------------------
# Chi-Squared = 77.61 using 59 PHA bins.
# Reduced chi-squared = 1.362 for 57 degrees of freedom
# Null hypothesis probability = 3.611194e-02
Photon flux (15-150 keV) in 0.512 sec: 0.332758 ( -0.332758 0.210894 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.7068e-08 ( -2.7068e-08 1.3915e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.512 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -2.47966 ( )
Epeak [keV] : 262.711 ( -259.279 -259.279 )
Norm@50keV : 3.34693E-03 ( -0.00345286 6.2763 )
------------------------------------------------------------
# Chi-Squared = 77.47 using 59 PHA bins.
# Reduced chi-squared = 1.383 for 56 degrees of freedom
# Null hypothesis probability = 3.030142e-02
Photon flux (15-150 keV) in 0.512 sec: 0.340519 ( -0.340519 0.196536 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17766e-07 ( -1.17766e-07 1.068e-06 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.512 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.43024 ( -0.359819 -0.359819 )
beta : -8.84369 ( -5.14162 0.609987 )
Epeak [keV] : 279.266 ( -169.303 -279.266 )
Norm@50keV : 3.04872E-03 ( -0.00304872 745.438 )
------------------------------------------------------------
# Chi-Squared = 77.47 using 59 PHA bins.
# Reduced chi-squared = 1.409 for 55 degrees of freedom
# Null hypothesis probability = 2.460329e-02
Photon flux (15-150 keV) in 0.512 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] : 169.437 ( )
R^2/D10^2 : 2.40991E-04 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 77.59 using 59 PHA bins.
# Reduced chi-squared = 1.361 for 57 degrees of freedom
# Null hypothesis probability = 3.622984e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.214e-10 5.563e-11
25- 50 1.091e-10 1.744e-10
50-150 2.530e-12 4.611e-17
15-150 3.331e-10 2.112e-12
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-199.998 -199.998)
Norm : 0.898179 (-0.898204 1.00315)
------------------------------------------------------------
# Chi-Squared = 85.70 using 59 PHA bins.
# Reduced chi-squared = 1.504 for 57 degrees of freedom
# Null hypothesis probability = 8.284367e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.145e-09 1.123e-09
25- 50 2.203e-09 1.916e-09
50-150 4.831e-09 4.040e-09
15-150 8.179e-09 7.383e-09
Double BB
R1^2/D10^2 : 1.95918E-04 (-8.31706e-07 -8.31706e-07)
kT2 [keV] : 1.21793 ( )
R2^2/D10^2 : 1.37827E-05 (-3.57999e-06 -3.57999e-06)
------------------------------------------------------------
# Chi-Squared = 77.72 using 59 PHA bins.
# Chi-Squared = 77.59 using 59 PHA bins.
# Chi-Squared = 77.58 using 59 PHA bins.
# Reduced chi-squared = 1.413 for 55 degrees of freedom
# Reduced chi-squared = 1.411 for 55 degrees of freedom
# Reduced chi-squared = 1.411 for 55 degrees of freedom
# Null hypothesis probability = 2.354348e-02
# Null hypothesis probability = 2.408054e-02
# Null hypothesis probability = 2.413425e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Plot creation:
Mon Aug 6 10:37:50 EDT 2012