batgrbproduct Analysis for Trigger=544347
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): Thu Jan 3 16:56:40 EST 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger544347/batgroup_hand_proc
======================================================================
Trigger: 00544347 Segment: 000
BAT Trigger Time: 378449982 [s; MET]
Trigger Stop: 378450112 [s; MET]
UTC: 2012-12-29T04:59:31.961480 [includes UTCF correction]
Where From?: Command line
BAT
RA: 190.100258521476 Dec: -50.5938550502162 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.31
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.31
Flight Position: [ source = EXTERNAL ]
RA: 190.1043 Dec: -50.5863 [deg; J2000]
Partial Coding Fraction: 0.3945312 [ including projection effects ]
Angular difference between Flight and Ground position is 0.000000 arcmin
Partial Coding Fraction: 0.3945312 [ including projection effects ]
Duration
T90: 86.5439999699593 +/- 39.5546314794679
Measured from: 26.1160001158714
to: 112.660000085831 [s; relative to TRIGTIME]
T50: 47.6399999856949 +/- 34.0076947453874
Measured from: 28.6400001049042
to: 76.2800000905991 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.248000025749207
to: 1.24800002574921 [s; relative to TRIGTIME]
Total Fluence
Measured from: -31.6679999828339
to: 115.044000029564 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.623258 0.605206 0.226523 0.014985
0.102475 0.105732 0.094463 0.084837 [error]
Peak 0.018386 0.014232 0.011015 0.013885
0.008409 0.008969 0.007771 0.007041 [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 2.42e-07 2.69e-07 2.14e-07 2.82e-07 8.30e-07 1.01e-06 erg/cm2
Error 5.92e-08 5.60e-08 8.45e-08 2.14e-07 1.97e-07 3.28e-07 erg/cm2
Peak flux Power-law 1.35e-01 1.33e-01 9.19e-02 1.00e-01 3.99e-01 4.60e-01 ph/cm2/s
Error 1.49e-01 1.07e-01 7.81e-02 7.06e-01 3.19e-01 6.27e-01 ph/cm2/s
Fluence Cutoff-PL 2.31e-07 2.98e-07 1.93e-07 6.45e-08 7.87e-07 0.00e+00 erg/cm2
Error 6.42e-08 7.68e-08 1.48e-07 2.06e-07 3.59e-07 0.00e+00 erg/cm2
Peak flux Cutoff-PL 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
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 2.331 0.399 - - 5.89e-04 1.71e-04 0.000 57
CPL 1.457 1.474 23.5 0.0 2.03e-03 0.00e+00 0.000 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.532 1.458 - - 3.17e-03 2.48e-03 0.000 57
CPL 1.594 1.936 9999.3 0.0 3.09e-03 0.00e+00 0.000 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 146.712 -31.668 115.044
T90 86.544 26.116 112.660
T50 47.640 28.640 76.280
Peak 1.000 0.248 1.248
Image
Pre-slew 14.0-50.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
190.1043 -50.5863 0.0243 46.7528 -11.8766 1.2158597 7.936 TRIG_00544347
Foreground time interval of the image:
0.000 130.000 (delta_t = 130.000 [sec])
Background time interval of the image:
-189.000 -31.668 (delta_t = 157.332 [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 -31.668 sec. to 115.044 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.33094 ( -0.36768 0.429818 )
Norm@50keV : 5.88590E-04 ( -0.000173779 0.000168146 )
------------------------------------------------------------
#Test statistic : Chi-Squared = 57.32 using 59 PHA bins.
# Reduced chi-squared = 1.006 for 57 degrees of freedom
# Null hypothesis probability = 4.633130e-01
Photon flux (15-150 keV) in 146.7 sec: 0.104662 ( -0.0200175 0.0200175 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.30017e-07 ( -1.92558e-07 2.0223e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -31.668 sec. to 115.044 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.45669 ( -2.40881 0.539846 )
Epeak [keV] : 23.4930 ( )
Norm@50keV : 2.02979E-03 ( )
------------------------------------------------------------
#Test statistic : Chi-Squared = 56.43 using 59 PHA bins.
# Reduced chi-squared = 1.008 for 56 degrees of freedom
# Null hypothesis probability = 4.589215e-01
Photon flux (15-150 keV) in 146.7 sec: 0.102272 ( -0.0203002 0.020403 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.8679e-07 ( -2.1445e-07 5.04531e-07 ) ergs/cm2
Band function
Time interval is from -31.668 sec. to 115.044 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.53943 ( 1.5394 1.5394 )
beta : -4.84181 ( 3.88962 13.884 )
Epeak [keV] : 22.0127 ( -23.1548 21.9379 )
Norm@50keV : 1.80686E-03 ( -0.00196572 403844 )
------------------------------------------------------------
#Test statistic : Chi-Squared = 56.43 using 59 PHA bins.
# Reduced chi-squared = 1.026 for 55 degrees of freedom
# Null hypothesis probability = 4.211876e-01
Photon flux (15-150 keV) in 146.7 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] : 7.77469 (-1.60441 2.08403)
R^2/D10^2 : 0.128607 (-0.0791473 0.203022)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Test statistic : Chi-Squared = 60.26 using 59 PHA bins.
# Reduced chi-squared = 1.057 for 57 degrees of freedom
# Null hypothesis probability = 3.587030e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.017e-07 8.269e-08
25- 50 3.358e-07 1.210e-07
50-150 8.018e-08 4.745e-08
15-150 6.177e-07 2.262e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 39.8176 (-15.4024 30.3447)
Norm : 0.682229 (-0.211651 0.351038)
------------------------------------------------------------
#Test statistic : Chi-Squared = 56.44 using 59 PHA bins.
# Reduced chi-squared = 0.9901 for 57 degrees of freedom
# Null hypothesis probability = 4.962110e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.295e-07 5.905e-08
25- 50 3.013e-07 8.465e-08
50-150 2.319e-07 1.432e-07
15-150 7.627e-07 2.384e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.48377 (-4.01151 2.54515)
R1^2/D10^2 : 0.396564 (-0.198261 549.723)
kT2 [keV] : 16.3379 (-14.5846 82.1109)
R2^2/D10^2 : 3.72393E-03 (-0.00369056 0.100688)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.18 using 59 PHA bins.
#Test statistic : Chi-Squared = 56.18 using 59 PHA bins.
# Reduced chi-squared = 1.022 for 55 degrees of freedom
# Null hypothesis probability = 4.303171e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.319e-07 1.342e-07
25- 50 2.930e-07 1.567e-07
50-150 2.519e-07 1.747e-07
15-150 7.767e-07 3.995e-07
Peak spectrum fit
Power-law model
Time interval is from 0.248 sec. to 1.248 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.53178 ( -1.53242 1.38272 )
Norm@50keV : 3.17013E-03 ( -0.00316987 0.00179235 )
------------------------------------------------------------
#Test statistic : Chi-Squared = 59.82 using 59 PHA bins.
# Reduced chi-squared = 1.049 for 57 degrees of freedom
# Null hypothesis probability = 3.737563e-01
Photon flux (15-150 keV) in 1 sec: 0.399308 ( -0.399308 0.237742 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.9917e-08 ( -2.99171e-08 1.8897e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.248 sec. to 1.248 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.59351 ( -1.59005 2.2816 )
Epeak [keV] : 9999.34 ( )
Norm@50keV : 3.09369E-03 ( )
------------------------------------------------------------
#Test statistic : Chi-Squared = 59.83 using 59 PHA bins.
# Reduced chi-squared = 1.068 for 56 degrees of freedom
# Null hypothesis probability = 3.384306e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.248 sec. to 1.248 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.96406 ( -4.96406 -4.96406 )
beta : -1.72970 ( 1.7297 1.7297 )
Epeak [keV] : 26.6851 ( -26.6851 54.8165 )
Norm@50keV : 230.312 ( -127.73 8.27294e+06 )
------------------------------------------------------------
#Test statistic : Chi-Squared = 59.69 using 59 PHA bins.
# Reduced chi-squared = 1.085 for 55 degrees of freedom
# Null hypothesis probability = 3.091597e-01
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] : 8.43817 (-4.52885 -8.45381)
R^2/D10^2 : 0.346887 (-0.343143 7.65347)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Test statistic : Chi-Squared = 61.78 using 59 PHA bins.
# Reduced chi-squared = 1.084 for 57 degrees of freedom
# Null hypothesis probability = 3.091744e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.633e-09 3.180e-09
25- 50 8.878e-09 6.155e-09
50-150 2.770e-09 2.608e-09
15-150 1.628e-08 1.266e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.360 ( )
Norm : 1.60432 ( )
------------------------------------------------------------
#Test statistic : Chi-Squared = 60.15 using 59 PHA bins.
# Reduced chi-squared = 1.055 for 57 degrees of freedom
# Null hypothesis probability = 3.625028e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.995e-09 2.762e-09
25- 50 7.685e-09 5.390e-09
50-150 1.685e-08 1.135e-08
15-150 2.853e-08 1.909e-08
Double BB
kT1 [keV] : 6.58059 (-4.01613 6.93096)
R1^2/D10^2 : 0.827085 ( )
kT2 [keV] : 199.363 (-199.363 -199.363)
R2^2/D10^2 : 8.24384E-05 (-6.25683e-05 0.00660914)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
#Test statistic : Chi-Squared = 57.43 using 59 PHA bins.
#Fit statistic : Chi-Squared = 57.36 using 59 PHA bins.
#Test statistic : Chi-Squared = 57.36 using 59 PHA bins.
# Reduced chi-squared = 1.044 for 55 degrees of freedom
# Reduced chi-squared = 1.043 for 55 degrees of freedom
# Null hypothesis probability = 3.853400e-01
# Null hypothesis probability = 3.877692e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.937e-09 3.400e-09
25- 50 7.889e-09 5.390e-09
50-150 2.247e-08 3.957e-09
15-150 3.530e-08 1.158e-08
Plot creation:
Thu Jan 3 17:21:38 EST 2013