batgrbproduct Analysis for Trigger=529095
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): Sun Jul 29 20:19:26 EDT 2012
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger529095/GCN5_download_cron
======================================================================
Trigger: 00529095 Segment: 000
BAT Trigger Time: 365252183.552 [s; MET]
Trigger Stop: 365252184.576 [s; MET]
UTC: 2012-07-29T10:56:14.073500 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 13.0556615694054 Dec: 49.9398263832054 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 19.36
Image Trigger?: NO
Rate S/N Ratio: 48.5386443980464 [ if not an image trigger ]
Image S/N Ratio: 19.36
Flight Position: [ source = BAT ]
RA: 13.0556615694054 Dec: 49.9398263832054 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 13.0787898505278 Dec: 49.9379155372277 [deg; J2000]
{ 00h 52m 18.9s , +49d 56' 16.5" }
+/- 0.720689699434032 [arcmin] (estimated 90% radius based on SNR)
+/- 0.155923847912661 [arcmin] (formal 1-sigma fit error)
SNR: 48.5663061270317
Angular difference between Flight and Ground position is 0.900457 arcmin
Partial Coding Fraction: 0.765625 [ including projection effects ]
Duration
T90: 93.7999998927116 +/- 36.7435331717259
Measured from: -1.39199984073639
to: 92.4080000519753 [s; relative to TRIGTIME]
T50: 24.7239999771118 +/- 4.47914276433106
Measured from: 1.3160001039505
to: 26.0400000810623 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.0440000295639038
to: 1.0440000295639 [s; relative to TRIGTIME]
Total Fluence
Measured from: -3.09999996423721
to: 141.791999995708 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.302813 1.615770 1.072172 0.259967
0.058847 0.060358 0.052841 0.044970 [error]
Peak 0.098047 0.144491 0.090756 0.016592
0.007027 0.007598 0.006624 0.005022 [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 3.85e-07 6.59e-07 8.59e-07 2.27e-06 2.52e-06 4.17e-06 erg/cm2
Error 3.07e-08 3.08e-08 5.34e-08 3.09e-07 1.25e-07 3.47e-07 erg/cm2
Peak flux Power-law 1.07e+00 9.77e-01 6.16e-01 5.94e-01 2.91e+00 3.26e+00 ph/cm2/s
Error 1.08e-01 6.33e-02 5.41e-02 1.03e-01 1.86e-01 2.09e-01 ph/cm2/s
Fluence Cutoff-PL 3.86e-07 6.60e-07 8.59e-07 2.24e-06 4.15e-06 0.00e+00 erg/cm2
Error 3.07e-08 3.08e-08 5.35e-08 3.07e-07 5.89e-07 0.00e+00 erg/cm2
Peak flux Cutoff-PL 9.36e-01 1.07e+00 6.43e-01 2.34e-01 2.81e+00 2.88e+00 ph/cm2/s
Error 1.28e-01 8.16e-02 6.17e-02 1.20e-01 1.94e-01 2.28e-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 2.88e+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 1.618 0.085 - - 1.86e-03 8.61e-05 65.630 57
CPL 1.618 0.183 9999.4 0.0 1.87e-03 3.95e-04 65.640 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.666 0.109 - - 2.22e-02 1.52e-03 58.100 57
CPL 0.784 0.521 64.8 17.5 6.50e-02 4.50e-02 47.810 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: 79.232000 sec.
T50 in the 50-300 keV band: 25.664000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 144.892 -3.100 141.792
T90 93.800 -1.392 92.408
T50 24.724 1.316 26.040
Peak 1.000 0.044 1.044
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
13.0788 +49.9379 0.0039 19.1 -81.4 2.7225 48.6 TRIG_00529095
------------------------------------------
Foreground time interval of the image:
-3.100 15.349 (delta_t = 18.449 [sec])
Background time interval of the image:
-239.552 -3.100 (delta_t = 236.452 [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 -3.100 sec. to 141.792 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.61794 ( -0.0844119 0.0849049 )
Norm@50keV : 1.86461E-03 ( -8.62207e-05 8.59061e-05 )
------------------------------------------------------------
# Chi-Squared = 65.63 using 59 PHA bins.
# Reduced chi-squared = 1.151 for 57 degrees of freedom
# Null hypothesis probability = 2.025240e-01
Photon flux (15-150 keV) in 144.9 sec: 0.240961 ( -0.0111527 0.0111826 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.52145e-06 ( -1.25106e-07 1.25762e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -3.100 sec. to 141.792 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.61839 ( -0.282548 0.0839684 )
Epeak [keV] : 9999.36 ( -9999.98 -9999.98 )
Norm@50keV : 1.86716E-03 ( -8.48729e-05 0.000705688 )
------------------------------------------------------------
# Chi-Squared = 65.64 using 59 PHA bins.
# Reduced chi-squared = 1.172 for 56 degrees of freedom
# Null hypothesis probability = 1.773621e-01
Photon flux (15-150 keV) in 144.9 sec: 0.240773 ( -0.011064 0.011249 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.14715e-06 ( -8.17439e-07 3.60062e-07 ) ergs/cm2
Band function
Time interval is from -3.100 sec. to 141.792 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.98842E-02 ( 0.890247 0.890247 )
beta : -1.67797 ( -0.14907 0.108395 )
Epeak [keV] : 33.9912 ( -33.8486 83.7155 )
Norm@50keV : 2.77709E-02 ( -0.0283168 172.075 )
------------------------------------------------------------
# Chi-Squared = 63.54 using 59 PHA bins.
# Reduced chi-squared = 1.155 for 55 degrees of freedom
# Null hypothesis probability = 2.008378e-01
Photon flux (15-150 keV) in 144.9 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] : 13.6208 ( )
R^2/D10^2 : 3.59087E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 199.77 using 59 PHA bins.
# Reduced chi-squared = 3.5048 for 57 degrees of freedom
# Null hypothesis probability = 9.674195e-18
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.044e-07 1.739e-08
25- 50 7.393e-07 4.456e-08
50-150 8.902e-07 9.607e-08
15-150 1.834e-06 9.419e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 175.071 (33.9829 -102.422)
Norm : 0.974620 (-0.0488914 0.0532957)
------------------------------------------------------------
# Chi-Squared = 69.36 using 59 PHA bins.
# Reduced chi-squared = 1.217 for 57 degrees of freedom
# Null hypothesis probability = 1.262271e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.573e-07 2.369e-08
25- 50 6.763e-07 3.536e-08
50-150 1.418e-06 2.079e-07
15-150 2.451e-06 2.195e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.46873 (-0.941554 1.02988)
R1^2/D10^2 : 0.230756 (-0.079842 0.135311)
kT2 [keV] : 31.7546 (-6.06243 11.1045)
R2^2/D10^2 : 1.43358E-03 (-0.00085523 0.0015125)
------------------------------------------------------------
# Chi-Squared = 65.51 using 59 PHA bins.
# Reduced chi-squared = 1.191 for 55 degrees of freedom
# Null hypothesis probability = 1.570004e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.505e-07 4.137e-08
25- 50 6.932e-07 8.035e-08
50-150 1.490e-06 3.220e-07
15-150 2.534e-06 4.666e-07
Peak spectrum fit
Power-law model
Time interval is from 0.044 sec. to 1.044 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.66597 ( -0.10826 0.110338 )
Norm@50keV : 2.21740E-02 ( -0.00152257 0.0015116 )
------------------------------------------------------------
# Chi-Squared = 58.10 using 59 PHA bins.
# Reduced chi-squared = 1.019 for 57 degrees of freedom
# Null hypothesis probability = 4.346710e-01
Photon flux (15-150 keV) in 1 sec: 2.91081 ( -0.186223 0.18635 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.05909e-07 ( -1.49534e-08 1.5071e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.044 sec. to 1.044 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.783546 ( -0.551781 0.489255 )
Epeak [keV] : 64.8429 ( -10.1434 24.8116 )
Norm@50keV : 6.49745E-02 ( -0.0287411 0.0613233 )
------------------------------------------------------------
# Chi-Squared = 47.81 using 59 PHA bins.
# Reduced chi-squared = 0.8537 for 56 degrees of freedom
# Null hypothesis probability = 7.739107e-01
Photon flux (15-150 keV) in 1 sec: 2.80826 ( -0.19396 0.19407 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.14045e-07 ( -2.8389e-08 4.5431e-08 ) ergs/cm2
Band function
Time interval is from 0.044 sec. to 1.044 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.807864 ( -0.4564 0.396777 )
beta : -8.23166 ( 6.61095 16.6109 )
Epeak [keV] : 65.3624 ( -9.22469 24.19 )
Norm@50keV : 6.30977E-02 ( -0.0262479 0.0108807 )
------------------------------------------------------------
# Chi-Squared = 47.81 using 59 PHA bins.
# Reduced chi-squared = 0.8693 for 55 degrees of freedom
# Null hypothesis probability = 7.432452e-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] : 13.0001 (-0.921586 0.997912)
R^2/D10^2 : 0.545904 (-0.12876 0.166615)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 80.21 using 59 PHA bins.
# Reduced chi-squared = 1.407 for 57 degrees of freedom
# Null hypothesis probability = 2.306141e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.957e-08 2.205e-09
25- 50 6.739e-08 5.255e-09
50-150 7.201e-08 1.016e-08
15-150 1.590e-07 1.145e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 133.588 (1.62326 83.6561)
Norm : 12.2876 (-0.91015 1.02524)
------------------------------------------------------------
# Chi-Squared = 50.56 using 59 PHA bins.
# Reduced chi-squared = 0.8870 for 57 degrees of freedom
# Null hypothesis probability = 7.137594e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.183e-08 2.975e-09
25- 50 5.797e-08 3.585e-09
50-150 1.088e-07 1.577e-08
15-150 1.986e-07 1.835e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.79141 (-1.93899 2.18031)
R1^2/D10^2 : 3.08833 (-1.68601 4.1308)
kT2 [keV] : 20.1579 (-3.83098 8.09457)
R2^2/D10^2 : 8.18376E-02 (-0.0618155 0.119706)
------------------------------------------------------------
# Chi-Squared = 48.80 using 59 PHA bins.
# Reduced chi-squared = 0.8872 for 55 degrees of freedom
# Null hypothesis probability = 7.092140e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.854e-08 9.940e-09
25- 50 6.059e-08 1.441e-08
50-150 1.007e-07 4.763e-08
15-150 1.899e-07 5.447e-08
Plot creation:
Sun Jul 29 20:38:34 EDT 2012