batgrbproduct Analysis for Trigger=567163
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 Aug 23 17:26:30 EDT 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger567163/GCN5_download_cron
======================================================================
Trigger: 00567163 Segment: 000
BAT Trigger Time: 398879668.212 [s; MET]
Trigger Stop: 398879668.244 [s; MET]
UTC: 2013-08-22T15:54:17.270440 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 27.9397002132013 Dec: -3.21912082484814 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.43
Image Trigger?: NO
Rate S/N Ratio: 19.6468827043885 [ if not an image trigger ]
Image S/N Ratio: 7.43
Flight Position: [ source = BAT ]
RA: 27.9397002132013 Dec: -3.21912082484814 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 27.9298196323006 Dec: -3.19350854935125 [deg; J2000]
{ 01h 51m 43.2s , -03d 11' 36.6" }
+/- 2.44868937104979 [arcmin] (estimated 90% radius based on SNR)
+/- 0.960792517117352 [arcmin] (formal 1-sigma fit error)
SNR: 8.46250258030682
Angular difference between Flight and Ground position is 1.646789 arcmin
Partial Coding Fraction: 0.9296875 [ including projection effects ]
Duration
T90: 0.043999969959259 +/- 0.0113137314268704
Measured from: -0.00399988889694214
to: 0.0400000810623169 [s; relative to TRIGTIME]
T50: 0.0199999213218689 +/- 0.0113137314268704
Measured from: 0.00800013542175293
to: 0.0280000567436218 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.477999985218048
to: 0.522000014781952 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.00400000810623169
to: 0.043999969959259 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.007418 0.007899 0.009031 -0.000207
0.001559 0.001739 0.001487 0.001054 [error]
Peak 0.013347 0.012006 0.012589 -0.001759
0.005097 0.005192 0.004672 0.003950 [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 1.97e-09 3.26e-09 4.10e-09 1.02e-08 1.22e-08 1.96e-08 erg/cm2
Error 5.75e-10 6.68e-10 1.06e-09 5.10e-09 2.66e-09 6.19e-09 erg/cm2
Peak flux Power-law 1.33e-01 1.08e-01 5.92e-02 4.76e-02 3.22e-01 3.48e-01 ph/cm2/s
Error 6.88e-02 4.05e-02 3.67e-02 6.35e-02 1.20e-01 1.35e-01 ph/cm2/s
Fluence Cutoff-PL 1.37e-09 4.14e-09 5.15e-09 1.91e-09 1.22e-08 1.26e-08 erg/cm2
Error 7.44e-10 9.50e-10 1.46e-09 2.84e-09 2.55e-09 3.28e-09 erg/cm2
Peak flux Cutoff-PL 1.19e-01 1.19e-01 6.22e-02 1.93e-02 3.14e-01 3.19e-01 ph/cm2/s
Error 1.00e-01 5.26e-02 4.22e-02 5.94e-02 1.19e-01 1.41e-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 3.25e-01 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 1.672 0.295 - - 2.74e-02 5.75e-03 59.600 57
CPL -0.455 1.901 60.3 18.6 3.09e-01 1.43e+00 53.840 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.867 0.756 - - 2.27e-03 1.10e-03 44.130 57
CPL 1.014 3.065 53.4 0.0 6.59e-03 0.00e+00 43.840 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 0.048 -0.004 0.044
T90 0.044 -0.004 0.040
T50 0.020 0.008 0.028
Peak 1.000 -0.478 0.522
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
27.9298 -3.1935 0.0228 19.3 18.8 0.0245 8.5 TRIG_00567163
------------------------------------------
Foreground time interval of the image:
-0.004 0.044 (delta_t = 0.048 [sec])
Background time interval of the image:
-186.011 -0.004 (delta_t = 186.007 [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 -0.004 sec. to 0.044 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.67195 ( -0.287956 0.301678 )
Norm@50keV : 2.73752E-02 ( -0.00578258 0.00571332 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.60 using 59 PHA bins.
# Reduced chi-squared = 1.046 for 57 degrees of freedom
# Null hypothesis probability = 3.812580e-01
Photon flux (15-150 keV) in 0.048 sec: 3.60080 ( -0.737033 0.73791 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.21955e-08 ( -2.65284e-09 2.67096e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.004 sec. to 0.044 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.454762 ( -2.24092 1.56147 )
Epeak [keV] : 60.3418 ( -10.9292 26.3055 )
Norm@50keV : 0.308830 ( -0.308988 2.5582 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.84 using 59 PHA bins.
# Reduced chi-squared = 0.9614 for 56 degrees of freedom
# Null hypothesis probability = 5.572284e-01
Photon flux (15-150 keV) in 0.048 sec: 3.53757 ( -0.38775 0.75877 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.21602e-08 ( -2.52101e-09 2.58048e-09 ) ergs/cm2
Band function
Time interval is from -0.004 sec. to 0.044 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.451145 ( -1.22856 2.69834 )
beta : -10.0000 ( 10 7.10543e-15 )
Epeak [keV] : 60.3202 ( -10.9096 26.3118 )
Norm@50keV : 0.307957 ( -0.307954 2.55943 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.84 using 59 PHA bins.
# Reduced chi-squared = 0.9788 for 55 degrees of freedom
# Null hypothesis probability = 5.191455e-01
Photon flux (15-150 keV) in 0.048 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] : 15.2193 (-2.29987 2.62549)
R^2/D10^2 : 0.446939 (-0.207182 0.364543)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.27 using 59 PHA bins.
# Reduced chi-squared = 0.9521 for 57 degrees of freedom
# Null hypothesis probability = 5.782548e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.038e-09 3.945e-10
25- 50 4.179e-09 1.207e-09
50-150 6.629e-09 2.345e-09
15-150 1.185e-08 2.947e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 137.566 (-62.4281 -135.071)
Norm : 15.4294 (-3.39686 4.26771)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.34 using 59 PHA bins.
# Reduced chi-squared = 1.006 for 57 degrees of freedom
# Null hypothesis probability = 4.624565e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.915e-09 1.088e-09
25- 50 3.503e-09 1.982e-09
50-150 6.664e-09 4.274e-09
15-150 1.208e-08 7.188e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.50641 (-2.52706 4.7274)
R1^2/D10^2 : 269.158 (-264.963 -266.013)
kT2 [keV] : 16.1898 (-2.56319 3.14233)
R2^2/D10^2 : 0.336246 (-0.132511 0.192138)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.78 using 59 PHA bins.
# Reduced chi-squared = 0.9232 for 55 degrees of freedom
# Null hypothesis probability = 6.365814e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.594e-09 6.740e-10
25- 50 3.761e-09 1.711e-09
50-150 6.823e-09 3.286e-09
15-150 1.218e-08 4.780e-09
Peak spectrum fit
Power-law model
Time interval is from -0.478 sec. to 0.522 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.86706 ( -0.657794 0.853997 )
Norm@50keV : 2.27224E-03 ( -0.00115133 0.001046 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.13 using 59 PHA bins.
# Reduced chi-squared = 0.7742 for 57 degrees of freedom
# Null hypothesis probability = 8.937381e-01
Photon flux (15-150 keV) in 1 sec: 0.321625 ( -0.119843 0.119863 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.08893e-08 ( -9.53543e-09 1.03059e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.478 sec. to 0.522 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.01374 ( -4.94305 1.18774 )
Epeak [keV] : 53.4448 ( )
Norm@50keV : 6.59020E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.84 using 59 PHA bins.
# Reduced chi-squared = 0.7828 for 56 degrees of freedom
# Null hypothesis probability = 8.810865e-01
Photon flux (15-150 keV) in 1 sec: 0.314210 ( -0.118229 0.120636 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.98464e-08 ( -8.8844e-09 1.07901e-08 ) ergs/cm2
Band function
Time interval is from -0.478 sec. to 0.522 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.15276 ( -1.23703 5.10172 )
beta : -9.37165 ( 9.37167 19.3717 )
Epeak [keV] : 56.9817 ( -56.5567 -56.5567 )
Norm@50keV : 5.44003E-03 ( -0.00545807 708045 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.85 using 59 PHA bins.
# Reduced chi-squared = 0.7973 for 55 degrees of freedom
# Null hypothesis probability = 8.598848e-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] : 12.9043 (-4.70732 6.54055)
R^2/D10^2 : 6.22112E-02 (-0.0622088 0.249398)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.89 using 59 PHA bins.
# Reduced chi-squared = 0.7876 for 57 degrees of freedom
# Null hypothesis probability = 8.774620e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.197e-09 1.399e-09
25- 50 7.507e-09 4.802e-09
50-150 7.869e-09 5.820e-09
15-150 1.757e-08 1.154e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 87.4764 (-87.4753 -87.4753)
Norm : 1.48577 (-0.618466 1.16602)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.89 using 59 PHA bins.
# Reduced chi-squared = 0.7699 for 57 degrees of freedom
# Null hypothesis probability = 8.986282e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.873e-09 2.418e-09
25- 50 6.509e-09 4.097e-09
50-150 9.738e-09 8.745e-09
15-150 2.012e-08 1.451e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.67734 (-2.55181 11.1347)
R1^2/D10^2 : 24.7582 (-35.2891 -35.2891)
kT2 [keV] : 15.2773 (-5.5644 10.5493)
R2^2/D10^2 : 3.01471E-02 (-0.0308147 0.0769409)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.24 using 59 PHA bins.
# Reduced chi-squared = 0.7680 for 55 degrees of freedom
# Null hypothesis probability = 8.963578e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.671e-09 2.169e-09
25- 50 6.145e-09 3.834e-09
50-150 9.500e-09 6.815e-09
15-150 1.932e-08 1.121e-08
Plot creation:
Fri Aug 23 17:48:47 EDT 2013