batgrbproduct Analysis for Trigger=600951
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 Jun 7 00:28:19 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger600951/GCN5_download_cron
======================================================================
Trigger: 00600951 Segment: 000
BAT Trigger Time: 423745105.6 [s; MET]
Trigger Stop: 423745105.728 [s; MET]
UTC: 2014-06-06T10:58:13.495520 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 201.807613565882 Dec: 37.5788694571298 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.42
Image Trigger?: NO
Rate S/N Ratio: 13.7477270848675 [ if not an image trigger ]
Image S/N Ratio: 7.42
Flight Position: [ source = BAT ]
RA: 201.807613565882 Dec: 37.5788694571298 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 201.798700201835 Dec: 37.5990409023395 [deg; J2000]
{ 13h 27m 11.7s , +37d 35' 56.5" }
+/- 2.41983808603852 [arcmin] (estimated 90% radius based on SNR)
+/- 0.815628342816387 [arcmin] (formal 1-sigma fit error)
SNR: 8.60700838236382
Angular difference between Flight and Ground position is 1.282335 arcmin
Partial Coding Fraction: 0.8671875 [ including projection effects ]
Duration
T90: 0.343999981880188 +/- 0.0920869700431641
Measured from: -0.0199999213218689
to: 0.324000060558319 [s; relative to TRIGTIME]
T50: 0.12799996137619 +/- 0.0950789192059972
Measured from: 0.052000105381012
to: 0.180000066757202 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.342000007629395
to: 0.657999992370605 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.0400000214576721
to: 0.351999998092651 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.007306 0.014787 0.028557 0.022099
0.003744 0.004261 0.004405 0.003634 [error]
Peak 0.003292 0.009470 0.032492 0.022519
0.005701 0.006423 0.006002 0.005057 [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 1.99e-09 6.67e-09 1.84e-08 1.52e-07 5.06e-08 1.80e-07 erg/cm2
Error 9.56e-10 1.96e-09 3.64e-09 7.04e-08 1.03e-08 7.11e-08 erg/cm2
Peak flux Power-law 4.27e-02 9.59e-02 1.70e-01 7.11e-01 4.65e-01 1.02e+00 ph/cm2/s
Error 3.47e-02 4.86e-02 4.54e-02 3.98e-01 1.31e-01 3.71e-01 ph/cm2/s
Fluence Cutoff-PL 7.81e-10 7.23e-09 3.04e-08 4.23e-08 6.34e-08 8.07e-08 erg/cm2
Error 1.12e-09 3.26e-09 7.53e-09 7.62e-08 1.51e-08 6.83e-08 erg/cm2
Peak flux Cutoff-PL 1.99e-02 8.28e-02 1.99e-01 3.30e-01 4.48e-01 5.98e-01 ph/cm2/s
Error 3.73e-02 5.74e-02 6.64e-02 5.71e-01 1.29e-01 4.73e-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 0.534 0.357 - - 9.76e-03 2.25e-03 66.250 57
CPL -1.126 2.449 131.1 -44.9 3.65e-02 1.49e-01 63.850 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 0.171 0.549 - - 3.64e-03 1.38e-03 56.950 57
CPL -1.429 3.185 160.9 0.0 1.13e-02 9.56e-02 55.930 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: 0.192000 sec.
T50 in the 50-300 keV band: 0.064000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 0.392 -0.040 0.352
T90 0.344 -0.020 0.324
T50 0.128 0.052 0.180
Peak 1.000 -0.342 0.658
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
201.7987 +37.5990 0.0224 17.5 139.2 0.0696 8.6 TRIG_00600951
------------------------------------------
Foreground time interval of the image:
-0.040 0.352 (delta_t = 0.392 [sec])
Background time interval of the image:
-88.199 -0.040 (delta_t = 88.159 [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 -0.040 sec. to 0.352 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.533691 ( -0.375504 0.338269 )
Norm@50keV : 9.76472E-03 ( -0.00229401 0.00220955 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.25 using 59 PHA bins.
# Reduced chi-squared = 1.162 for 57 degrees of freedom
# Null hypothesis probability = 1.881187e-01
Photon flux (15-150 keV) in 0.392 sec: 1.15038 ( -0.237528 0.239476 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.05625e-08 ( -1.02887e-08 1.03218e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.040 sec. to 0.352 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.12563 ( -3.12254 1.77449 )
Epeak [keV] : 131.080 ( -40.9662 -130.775 )
Norm@50keV : 3.65391E-02 ( -0.0372365 0.261392 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.85 using 59 PHA bins.
# Reduced chi-squared = 1.140 for 56 degrees of freedom
# Null hypothesis probability = 2.200137e-01
Photon flux (15-150 keV) in 0.392 sec: 1.09159 ( -0.241585 0.24806 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.3355e-08 ( -1.51637e-08 1.49913e-08 ) ergs/cm2
Band function
Time interval is from -0.040 sec. to 0.352 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.15138 ( -1.30922 3.05092 )
beta : -10.0000 ( 10 20 )
Epeak [keV] : 130.719 ( -30.9332 154.438 )
Norm@50keV : 3.72558E-02 ( -0.0372558 0.261809 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.85 using 59 PHA bins.
# Reduced chi-squared = 1.161 for 55 degrees of freedom
# Null hypothesis probability = 1.935594e-01
Photon flux (15-150 keV) in 0.392 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] : 31.5473 (-6.97644 11.3212)
R^2/D10^2 : 1.66388E-02 (-0.00939445 0.0173758)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.77 using 59 PHA bins.
# Reduced chi-squared = 1.119 for 57 degrees of freedom
# Null hypothesis probability = 2.507114e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.841e-10 4.390e-10
25- 50 6.194e-09 2.676e-09
50-150 4.262e-08 1.661e-08
15-150 4.980e-08 1.959e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 4.18809 (-0.995162 0.99515)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 88.48 using 59 PHA bins.
# Reduced chi-squared = 1.552 for 57 degrees of freedom
# Null hypothesis probability = 4.753972e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.089e-09 2.487e-09
25- 50 7.866e-09 4.671e-09
50-150 1.725e-08 1.029e-08
15-150 2.921e-08 1.721e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.37314 (-2.35481 6.23364)
R1^2/D10^2 : 46.5927 (-47.8335 -47.8335)
kT2 [keV] : 32.3803 (-7.38011 -32.3754)
R2^2/D10^2 : 1.53323E-02 (-0.0153377 0.0127345)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.08 using 59 PHA bins.
# Reduced chi-squared = 1.147 for 55 degrees of freedom
# Null hypothesis probability = 2.124126e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.620e-09 7.043e-10
25- 50 6.012e-09 2.584e-09
50-150 4.276e-08 1.752e-08
15-150 5.040e-08 2.301e-08
Peak spectrum fit
Power-law model
Time interval is from -0.342 sec. to 0.658 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.171333 ( -0.61195 0.486615 )
Norm@50keV : 3.63853E-03 ( -0.0014137 0.00134637 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.95 using 59 PHA bins.
# Reduced chi-squared = 0.9990 for 57 degrees of freedom
# Null hypothesis probability = 4.771127e-01
Photon flux (15-150 keV) in 1 sec: 0.464698 ( -0.129306 0.133042 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.85325e-08 ( -1.47549e-08 1.47622e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.342 sec. to 0.658 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.42852 ( -4.63644 1.7333 )
Epeak [keV] : 160.920 ( -160.93 -160.93 )
Norm@50keV : 1.13192E-02 ( -0.011318 0.179807 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.93 using 59 PHA bins.
# Reduced chi-squared = 0.9987 for 56 degrees of freedom
# Null hypothesis probability = 4.776143e-01
Photon flux (15-150 keV) in 1 sec: 0.447761 ( -0.12366 0.133496 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.13763e-08 ( -1.58199e-08 1.5334e-08 ) ergs/cm2
Band function
Time interval is from -0.342 sec. to 0.658 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.791132 ( 0.79113 0.79113 )
beta : -0.171415 ( -0.486942 0.611445 )
Epeak [keV] : 13.4011 ( -13.3958 -13.3958 )
Norm@50keV : 5.66733E-03 ( -0.00340902 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.95 using 59 PHA bins.
# Reduced chi-squared = 1.035 for 55 degrees of freedom
# Null hypothesis probability = 4.025319e-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] : 41.7825 (-13.6517 40.9815)
R^2/D10^2 : 3.46491E-03 (-0.00346491 0.00646681)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.97 using 59 PHA bins.
# Reduced chi-squared = 0.9820 for 57 degrees of freedom
# Null hypothesis probability = 5.136200e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.562e-10 4.616e-10
25- 50 5.223e-09 3.115e-09
50-150 5.262e-08 3.013e-08
15-150 5.860e-08 3.464e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 1.63723 (-0.578594 0.578569)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.19 using 59 PHA bins.
# Reduced chi-squared = 1.372 for 57 degrees of freedom
# Null hypothesis probability = 3.272569e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.080e-09 2.608e-09
25- 50 7.848e-09 4.997e-09
50-150 1.721e-08 1.085e-08
15-150 2.914e-08 1.808e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 188.114 ( )
R1^2/D10^2 : 4.31359E-05 (-4.31359e-05 -4.31359e-05)
kT2 [keV] : 36.1731 (-22.7805 159.654)
R2^2/D10^2 : 4.12858E-03 (-0.00365308 0.0378232)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.97 using 59 PHA bins.
#Fit statistic : Chi-Squared = 55.96 using 59 PHA bins.
# Reduced chi-squared = 1.018 for 55 degrees of freedom
# Reduced chi-squared = 1.017 for 55 degrees of freedom
# Null hypothesis probability = 4.380971e-01
# Null hypothesis probability = 4.386986e-01
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:
Sat Jun 7 00:31:04 EDT 2014