batgrbproduct Analysis for Trigger=599041
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 May 16 04:47:31 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger599041/GCN5_download_cron
======================================================================
Trigger: 00599041 Segment: 000
BAT Trigger Time: 421840376 [s; MET]
Trigger Stop: 421840440 [s; MET]
UTC: 2014-05-15T09:52:43.987080 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 252.039389922467 Dec: -45.200136287036 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 17.22
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 17.22
Flight Position: [ source = BAT ]
RA: 252.039389922467 Dec: -45.200136287036 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 252.035054176214 Dec: -45.2142125162865 [deg; J2000]
{ 16h 48m 08.4s , -45d 12' 51.2" }
+/- 1.29979544454268 [arcmin] (estimated 90% radius based on SNR)
+/- 0.58431280269831 [arcmin] (formal 1-sigma fit error)
SNR: 20.9141295319655
Angular difference between Flight and Ground position is 0.864232 arcmin
Partial Coding Fraction: 0.953125 [ including projection effects ]
Duration
T90: 217.351999938488 +/- 17.4267660879862
Measured from: -57.0039998888969
to: 160.348000049591 [s; relative to TRIGTIME]
T50: 113.663999915123 +/- 17.9184079581083
Measured from: -18.9919998645782
to: 94.6720000505447 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -68.7039999961853
to: -67.7039999961853 [s; relative to TRIGTIME]
Total Fluence
Measured from: -69.4800000190735
to: 173.128000020981 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.256363 2.424860 0.362902 -0.038308
0.126035 0.117592 0.099354 0.093053 [error]
Peak 0.056570 0.036414 0.010775 -0.005487
0.015910 0.015050 0.011571 0.010982 [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 1.07e-06 9.23e-07 5.45e-07 4.83e-07 2.75e-06 3.02e-06 erg/cm2
Error 8.70e-08 6.29e-08 7.78e-08 1.29e-07 1.88e-07 2.48e-07 erg/cm2
Peak flux Power-law 4.86e-01 2.37e-01 7.05e-02 2.66e-02 8.08e-01 8.19e-01 ph/cm2/s
Error 2.36e-01 1.79e-01 7.92e-02 5.93e-02 3.46e-01 3.55e-01 ph/cm2/s
Fluence Cutoff-PL 9.60e-07 1.05e-06 3.63e-07 2.71e-08 2.40e-06 2.40e-06 erg/cm2
Error 1.00e-07 8.24e-08 1.02e-07 3.97e-08 1.89e-07 1.93e-07 erg/cm2
Peak flux Cutoff-PL 4.89e-01 2.72e-01 2.72e-02 2.37e-04 7.88e-01 7.88e-01 ph/cm2/s
Error 3.71e-01 2.28e-01 7.55e-02 5.38e-02 3.35e-01 3.35e-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 2.760 0.143 - - 1.04e-03 1.08e-04 75.620 57
CPL 0.878 0.850 20.5 7.6 1.64e-02 3.16e-02 55.620 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.747 1.112 - - 3.51e-03 2.79e-03 52.080 57
CPL 0.961 0.000 16.5 0.0 6.76e-02 0.00e+00 51.750 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 242.608 -69.480 173.128
T90 217.352 -57.004 160.348
T50 113.664 -18.992 94.672
Peak 1.000 -68.704 -67.704
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
252.0351 -45.2142 0.0092 19.8 9.8 3.6659 20.9 TRIG_00599041
------------------------------------------
Foreground time interval of the image:
-18.499 124.401 (delta_t = 142.900 [sec])
Background time interval of the image:
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 -69.480 sec. to 173.128 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.76030 ( -0.139882 0.14614 )
Norm@50keV : 1.04137E-03 ( -0.00010787 0.000108315 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.62 using 59 PHA bins.
# Reduced chi-squared = 1.327 for 57 degrees of freedom
# Null hypothesis probability = 5.003523e-02
Photon flux (15-150 keV) in 242.6 sec: 0.241991 ( -0.0150711 0.0151017 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.74681e-06 ( -1.86664e-07 1.89169e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -69.480 sec. to 173.128 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.877537 ( -0.910682 0.789296 )
Epeak [keV] : 20.5161 ( -10.1988 4.93771 )
Norm@50keV : 1.63668E-02 ( -0.0163669 0.0468117 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.62 using 59 PHA bins.
# Reduced chi-squared = 0.9932 for 56 degrees of freedom
# Null hypothesis probability = 4.893010e-01
Photon flux (15-150 keV) in 242.6 sec: 0.224747 ( -0.016105 0.016201 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.40203e-06 ( -1.82906e-07 1.95633e-07 ) ergs/cm2
Band function
Time interval is from -69.480 sec. to 173.128 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.889423 ( -0.777758 0.458921 )
beta : -9.37167 ( 9.37167 19.3711 )
Epeak [keV] : 20.4491 ( -3.99178 5.00083 )
Norm@50keV : 1.60582E-02 ( -0.016058 0.0464677 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.62 using 59 PHA bins.
# Reduced chi-squared = 1.011 for 55 degrees of freedom
# Null hypothesis probability = 4.513078e-01
Photon flux (15-150 keV) in 242.6 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] : 7.06737 (-0.45262 0.477206)
R^2/D10^2 : 0.411401 (-0.102805 0.140049)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.65 using 59 PHA bins.
# Reduced chi-squared = 1.275 for 57 degrees of freedom
# Null hypothesis probability = 7.910108e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.088e-07 8.321e-08
25- 50 1.128e-06 8.843e-08
50-150 1.935e-07 4.622e-08
15-150 2.131e-06 1.547e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 25.3312 (-3.10275 3.66952)
Norm : 2.21619 (-0.312041 0.374019)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.60 using 59 PHA bins.
# Reduced chi-squared = 0.9929 for 57 degrees of freedom
# Null hypothesis probability = 4.901322e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.930e-07 8.637e-08
25- 50 1.026e-06 7.703e-08
50-150 4.449e-07 1.055e-07
15-150 2.464e-06 1.719e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.61026 (-1.09218 1.22777)
R1^2/D10^2 : 4.22476 (-2.93664 12.6143)
kT2 [keV] : 9.05849 (-1.19989 1.93187)
R2^2/D10^2 : 0.108765 (-0.0721065 0.121378)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.80 using 59 PHA bins.
# Reduced chi-squared = 0.9782 for 55 degrees of freedom
# Null hypothesis probability = 5.204812e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.776e-07 4.899e-07
25- 50 1.056e-06 4.807e-07
50-150 3.543e-07 1.842e-07
15-150 2.388e-06 1.153e-06
Peak spectrum fit
Power-law model
Time interval is from -68.704 sec. to -67.704 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.74723 ( -0.894289 1.33062 )
Norm@50keV : 3.50838E-03 ( -0.00260242 0.00297327 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.08 using 59 PHA bins.
# Reduced chi-squared = 0.9136 for 57 degrees of freedom
# Null hypothesis probability = 6.598881e-01
Photon flux (15-150 keV) in 1 sec: 0.808115 ( -0.345694 0.346633 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.79599e-08 ( -1.93532e-08 2.2785e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -68.704 sec. to -67.704 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.961229 ( )
Epeak [keV] : 16.5085 ( )
Norm@50keV : 6.75649E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.75 using 59 PHA bins.
# Reduced chi-squared = 0.9241 for 56 degrees of freedom
# Null hypothesis probability = 6.363755e-01
Photon flux (15-150 keV) in 1 sec: 0.788240 ( -0.332239 0.33722 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.20579e-08 ( -1.50224e-08 2.78432e-08 ) ergs/cm2
Band function
Time interval is from -68.704 sec. to -67.704 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.38238 ( 1.38096 1.38096 )
beta : -3.12336 ( 3.45697 5.04736 )
Epeak [keV] : 19.0355 ( -13.7642 -13.7642 )
Norm@50keV : 2318.31 ( -2322.4 1065.64 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.56 using 59 PHA bins.
# Reduced chi-squared = 0.9374 for 55 degrees of freedom
# Null hypothesis probability = 6.069656e-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] : 6.05231 (-2.44862 3.07291)
R^2/D10^2 : 2.95975 (-2.95899 28.4824)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.88 using 59 PHA bins.
# Reduced chi-squared = 0.9102 for 57 degrees of freedom
# Null hypothesis probability = 6.670494e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.458e-08 9.095e-09
25- 50 1.482e-08 1.047e-08
50-150 1.406e-09 1.299e-09
15-150 3.081e-08 2.001e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 20.9336 (-12.4361 45.8351)
Norm : 9.38337 (-9.38336 24.3823)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.80 using 59 PHA bins.
# Reduced chi-squared = 0.9088 for 57 degrees of freedom
# Null hypothesis probability = 6.698725e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.511e-08 9.810e-09
25- 50 1.370e-08 9.385e-09
50-150 4.425e-09 4.469e-09
15-150 3.324e-08 2.149e-08
Double BB
R1^2/D10^2 : 5.61093E-05 ( )
kT2 [keV] : 5.86441 (-2.52165 2.79161)
R2^2/D10^2 : 3.28102 (-2.73981 42.9953)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.61 using 59 PHA bins.
#Fit statistic : Chi-Squared = 51.32 using 59 PHA bins.
#Fit statistic : Chi-Squared = 50.98 using 59 PHA bins.
# Reduced chi-squared = 0.9384 for 55 degrees of freedom
# Reduced chi-squared = 0.9331 for 55 degrees of freedom
# Reduced chi-squared = 0.9269 for 55 degrees of freedom
# Null hypothesis probability = 6.049074e-01
# Null hypothesis probability = 6.160396e-01
# Null hypothesis probability = 6.290060e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.501e-08 8.965e-09
25- 50 1.458e-08 1.195e-08
50-150 2.548e-09 1.882e-09
15-150 3.214e-08 2.139e-08
Plot creation:
Fri May 16 04:58:00 EDT 2014