batgrbproduct Analysis for Trigger=599188
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): Sat May 17 10:53:33 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger599188/GCN5_download_cron
======================================================================
Trigger: 00599188 Segment: 000
BAT Trigger Time: 421965066.816 [s; MET]
Trigger Stop: 421965066.944 [s; MET]
UTC: 2014-05-16T20:30:54.797080 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 252.98837333485 Dec: 39.9147098873568 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.73
Image Trigger?: NO
Rate S/N Ratio: 13.4164078649987 [ if not an image trigger ]
Image S/N Ratio: 6.73
Flight Position: [ source = BAT ]
RA: 252.98837333485 Dec: 39.9147098873568 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 252.971800558031 Dec: 39.9579065462988 [deg; J2000]
{ 16h 51m 53.2s , +39d 57' 28.5" }
+/- 2.60323145561762 [arcmin] (estimated 90% radius based on SNR)
+/- 1.24168388033182 [arcmin] (formal 1-sigma fit error)
SNR: 7.75405164962851
Angular difference between Flight and Ground position is 2.701618 arcmin
Partial Coding Fraction: 0.75 [ including projection effects ]
Duration
T90: 0.191999971866608 +/- 0.0905096828275688
Measured from: -0.00799983739852905
to: 0.184000134468079 [s; relative to TRIGTIME]
T50: 0.12799996137619 +/- 0.064
Measured from: -0.00799983739852905
to: 0.120000123977661 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.379999995231628
to: 0.620000004768372 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.0079999566078186
to: 0.184000015258789 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.015478 0.020827 0.010504 -0.000332
0.003006 0.003406 0.003028 0.001991 [error]
Peak 0.016203 0.024629 0.011983 -0.007683
0.006131 0.006422 0.005695 0.004433 [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 4.62e-09 6.76e-09 7.37e-09 1.51e-08 2.34e-08 3.38e-08 erg/cm2
Error 1.24e-09 1.41e-09 2.37e-09 9.18e-09 5.77e-09 1.21e-08 erg/cm2
Peak flux Power-law 1.91e-01 1.59e-01 8.96e-02 7.49e-02 4.72e-01 5.14e-01 ph/cm2/s
Error 8.45e-02 5.04e-02 4.46e-02 7.21e-02 1.50e-01 1.69e-01 ph/cm2/s
Fluence Cutoff-PL 3.96e-09 9.12e-09 6.17e-09 7.16e-10 1.99e-08 2.00e-08 erg/cm2
Error 1.43e-09 2.47e-09 4.94e-09 3.76e-09 5.37e-09 6.98e-09 erg/cm2
Peak flux Cutoff-PL 1.59e-01 1.85e-01 9.49e-02 1.94e-02 4.55e-01 4.59e-01 ph/cm2/s
Error 1.32e-01 7.13e-02 5.31e-02 7.29e-02 1.54e-01 1.76e-01 ph/cm2/s
Fluence Band 2.39e-08 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 1.66e-01 1.79e-01 4.71e-01 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
Error 1.32e-01 1.65e-01 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 1.874 0.330 - - 1.32e-02 3.28e-03 68.190 57
CPL -0.507 3.059 42.2 15.4 3.37e-01 7.37e+01 62.960 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.824 0.585 - - 3.39e-03 1.32e-03 69.200 57
CPL 0.409 3.624 51.0 -3.8 2.01e-02 3.82e+00 68.310 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 0.192 -0.008 0.184
T90 0.192 -0.008 0.184
T50 0.128 -0.008 0.120
Peak 1.000 -0.380 0.620
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
252.9718 +39.9579 0.0248 22.6 40.6 0.0444 7.8 TRIG_00599188
------------------------------------------
Foreground time interval of the image:
-0.008 0.184 (delta_t = 0.192 [sec])
Background time interval of the image:
-239.816 -57.428 (delta_t = 182.388 [sec])
-56.816 -0.008 (delta_t = 56.808 [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 -0.008 sec. to 0.184 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.87373 ( -0.312096 0.348644 )
Norm@50keV : 1.32392E-02 ( -0.0033273 0.00323318 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.19 using 59 PHA bins.
# Reduced chi-squared = 1.196 for 57 degrees of freedom
# Null hypothesis probability = 1.473886e-01
Photon flux (15-150 keV) in 0.192 sec: 1.87913 ( -0.389837 0.389836 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.33658e-08 ( -5.68691e-09 5.86095e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.008 sec. to 0.184 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.506610 ( -4.16109 1.95761 )
Epeak [keV] : 42.1661 ( -8.74554 22.1085 )
Norm@50keV : 0.337377 ( -0.407718 147.078 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.96 using 59 PHA bins.
# Reduced chi-squared = 1.124 for 56 degrees of freedom
# Null hypothesis probability = 2.435048e-01
Photon flux (15-150 keV) in 0.192 sec: 1.82114 ( -0.39095 0.39528 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.99091e-08 ( -5.29571e-09 5.43706e-09 ) ergs/cm2
Band function
Time interval is from -0.008 sec. to 0.184 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.90168 ( -3.0218 -1.93343 )
beta : -2.92981 ( 2.94409 0.922219 )
Epeak [keV] : 36.8811 ( -9.65871 13.1437 )
Norm@50keV : 3.05442 ( -3.4843 166.699 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.07 using 59 PHA bins.
# Reduced chi-squared = 1.129 for 55 degrees of freedom
# Null hypothesis probability = 2.388600e-01
Photon flux (15-150 keV) in 0.192 sec: 1.84931 ( 5.15069 -0.38899 ) 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] : 10.2525 (-1.81393 2.29418)
R^2/D10^2 : 0.900658 (-0.48337 0.948734)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.26 using 59 PHA bins.
# Reduced chi-squared = 1.110 for 57 degrees of freedom
# Null hypothesis probability = 2.649269e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.732e-09 1.324e-09
25- 50 9.607e-09 3.011e-09
50-150 5.387e-09 2.694e-09
15-150 1.873e-08 5.792e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 76.2668 (-32.923 83.993)
Norm : 9.28579 (-2.30904 3.06594)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.37 using 59 PHA bins.
# Reduced chi-squared = 1.147 for 57 degrees of freedom
# Null hypothesis probability = 2.089234e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.610e-09 1.216e-09
25- 50 7.501e-09 2.575e-09
50-150 1.025e-08 7.539e-09
15-150 2.236e-08 1.027e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 23.6169 ( )
R1^2/D10^2 : 1.21392E-02 (-0.0134549 1.60454)
kT2 [keV] : 8.91885 (-8.8895 3.15106)
R2^2/D10^2 : 1.26832 (-1.27916 25.4351)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.47 using 59 PHA bins.
#Fit statistic : Chi-Squared = 62.35 using 59 PHA bins.
# Reduced chi-squared = 1.136 for 55 degrees of freedom
# Reduced chi-squared = 1.134 for 55 degrees of freedom
# Null hypothesis probability = 2.279408e-01
# Null hypothesis probability = 2.313212e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.028e-09 3.038e-09
25- 50 9.030e-09 8.397e-09
50-150 7.833e-09 6.547e-09
15-150 2.089e-08 1.843e-08
Peak spectrum fit
Power-law model
Time interval is from -0.380 sec. to 0.620 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.82398 ( -0.531177 0.638688 )
Norm@50keV : 3.39498E-03 ( -0.00136111 0.001276 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.20 using 59 PHA bins.
# Reduced chi-squared = 1.214 for 57 degrees of freedom
# Null hypothesis probability = 1.288951e-01
Photon flux (15-150 keV) in 1 sec: 0.472240 ( -0.149889 0.149889 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.12321e-08 ( -1.18597e-08 1.25369e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.380 sec. to 0.620 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.408676 ( -4.96437 2.28383 )
Epeak [keV] : 50.9982 ( -43.3502 -51 )
Norm@50keV : 2.01116E-02 ( -0.0201153 7.62815 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.31 using 59 PHA bins.
# Reduced chi-squared = 1.220 for 56 degrees of freedom
# Null hypothesis probability = 1.251647e-01
Photon flux (15-150 keV) in 1 sec: 0.455169 ( -0.154403 0.153322 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.87813e-08 ( -1.06796e-08 1.31294e-08 ) ergs/cm2
Band function
Time interval is from -0.380 sec. to 0.620 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.413304 ( -7.13469 4.8825 )
beta : -10.0000 ( 10 20 )
Epeak [keV] : 50.9781 ( -29.5121 200.03 )
Norm@50keV : 2.00140E-02 ( -0.020014 6.87261 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.31 using 59 PHA bins.
# Reduced chi-squared = 1.242 for 55 degrees of freedom
# Null hypothesis probability = 1.071829e-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] : 12.2293 (-3.42774 4.80673)
R^2/D10^2 : 0.113713 (-0.113715 0.257664)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.96 using 59 PHA bins.
# Reduced chi-squared = 1.210 for 57 degrees of freedom
# Null hypothesis probability = 1.331347e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.602e-09 2.226e-09
25- 50 1.159e-08 7.034e-09
50-150 1.055e-08 7.420e-09
15-150 2.574e-08 1.646e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 90.8039 (-55.0339 -90.7789)
Norm : 2.17176 (-0.772826 1.24004)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.62 using 59 PHA bins.
# Reduced chi-squared = 1.204 for 57 degrees of freedom
# Null hypothesis probability = 1.392659e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.668e-09 3.458e-09
25- 50 9.605e-09 5.970e-09
50-150 1.471e-08 1.189e-08
15-150 2.998e-08 2.060e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.41775 (-2.39701 11.7385)
R1^2/D10^2 : 59.6747 (-86.9983 -86.9983)
kT2 [keV] : 13.8785 (-4.18222 7.2572)
R2^2/D10^2 : 6.56810E-02 (-0.0653857 0.102162)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.81 using 59 PHA bins.
# Reduced chi-squared = 1.215 for 55 degrees of freedom
# Null hypothesis probability = 1.320414e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.233e-09 2.277e-09
25- 50 1.002e-08 6.100e-09
50-150 1.245e-08 8.475e-09
15-150 2.771e-08 1.631e-08
Plot creation:
Sat May 17 10:57:10 EDT 2014