batgrbproduct Analysis for Trigger=533613
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 Sep 14 10:22:22 EDT 2012
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger533613/GCN5_download_cron
======================================================================
Trigger: 00533613 Segment: 000
BAT Trigger Time: 369273367.744 [s; MET]
Trigger Stop: 369273368.768 [s; MET]
UTC: 2012-09-13T23:55:58.097160 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 213.644443505442 Dec: -14.5347563916444 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.76
Image Trigger?: NO
Rate S/N Ratio: 13.7840487520902 [ if not an image trigger ]
Image S/N Ratio: 7.76
Flight Position: [ source = BAT ]
RA: 213.644443505442 Dec: -14.5347563916444 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 213.6596513178 Dec: -14.5077400195474 [deg; J2000]
{ 14h 14m 38.3s , -14d 30' 27.9" }
+/- 0.615569245856935 [arcmin] (estimated 90% radius based on SNR)
+/- 0.169490654370036 [arcmin] (formal 1-sigma fit error)
SNR: 60.8346984700602
Angular difference between Flight and Ground position is 1.846033 arcmin
Partial Coding Fraction: 0.59375 [ including projection effects ]
Duration
T90: 125.98399990797 +/- 4.32533933333022
Measured from: -31.3839998841286
to: 94.6000000238419 [s; relative to TRIGTIME]
T50: 54.2999998927116 +/- 1.829539834983
Measured from: 1.88800013065338
to: 56.188000023365 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 38.4639999866486
to: 39.4639999866486 [s; relative to TRIGTIME]
Total Fluence
Measured from: -51.7039999961853
to: 111.787999987602 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 5.316135 6.771850 4.819232 1.272857
0.104970 0.102814 0.090037 0.078853 [error]
Peak 0.090605 0.138947 0.129513 0.053019
0.009162 0.009822 0.008953 0.007139 [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 1.72e-06 2.91e-06 3.76e-06 9.79e-06 1.11e-05 1.82e-05 erg/cm2
Error 7.74e-08 7.37e-08 1.01e-07 6.17e-07 2.44e-07 6.60e-07 erg/cm2
Peak flux Power-law 8.89e-01 1.03e+00 8.49e-01 1.18e+00 3.19e+00 3.94e+00 ph/cm2/s
Error 1.27e-01 8.75e-02 7.37e-02 2.22e-01 2.41e-01 3.01e-01 ph/cm2/s
Fluence Cutoff-PL 1.68e-06 2.93e-06 3.79e-06 8.68e-06 1.71e-05 0.00e+00 erg/cm2
Error 1.03e-07 7.71e-08 1.10e-07 1.65e-06 1.68e-06 0.00e+00 erg/cm2
Peak flux Cutoff-PL 8.88e-01 1.03e+00 8.49e-01 1.17e+00 3.19e+00 3.94e+00 ph/cm2/s
Error 1.04e-01 9.10e-02 8.07e-02 3.55e-01 2.46e-01 4.29e-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 1.631 0.043 - - 7.27e-03 1.55e-04 42.820 57
CPL 1.542 0.143 281.2 0.0 7.98e-03 0.00e+00 41.980 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.272 0.133 - - 2.69e-02 1.96e-03 54.160 57
CPL 1.268 0.317 9969.6 0.0 2.70e-02 1.02e-02 54.160 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: 117.568000 sec.
T50 in the 50-300 keV band: 45.120000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 163.492 -51.704 111.788
T90 125.984 -31.384 94.600
T50 54.300 1.888 56.188
Peak 1.000 38.464 39.464
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
213.6597 -14.5077 0.0032 26.9 -60.0 19.4597 60.8 TRIG_00533613
------------------------------------------
Foreground time interval of the image:
-51.704 111.788 (delta_t = 163.492 [sec])
Background time interval of the image:
-239.744 -51.704 (delta_t = 188.040 [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 -51.704 sec. to 111.788 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.63148 ( -0.0429202 0.0429578 )
Norm@50keV : 7.27190E-03 ( -0.000155238 0.000155232 )
------------------------------------------------------------
# Chi-Squared = 42.82 using 59 PHA bins.
# Reduced chi-squared = 0.7512 for 57 degrees of freedom
# Null hypothesis probability = 9.183401e-01
Photon flux (15-150 keV) in 163.5 sec: 0.943815 ( -0.0236135 0.0237237 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.10791e-05 ( -2.43481e-07 2.43669e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -51.704 sec. to 111.788 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.54200 ( -0.171976 0.113374 )
Epeak [keV] : 281.203 ( )
Norm@50keV : 7.98388E-03 ( )
------------------------------------------------------------
# Chi-Squared = 41.98 using 59 PHA bins.
# Reduced chi-squared = 0.7497 for 56 degrees of freedom
# Null hypothesis probability = 9.177307e-01
Photon flux (15-150 keV) in 163.5 sec: 0.935836 ( -0.013775 0.027542 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.70676e-05 ( -1.74468e-06 1.60573e-06 ) ergs/cm2
Band function
Time interval is from -51.704 sec. to 111.788 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.11744 ( 1.11686 1.11686 )
beta : -1.66633 ( 1.66632 0.0621492 )
Epeak [keV] : 61.1814 ( -61.0666 -61.0666 )
Norm@50keV : 1.47852E-02 ( -0.00775845 0 )
------------------------------------------------------------
# Chi-Squared = 40.81 using 59 PHA bins.
# Reduced chi-squared = 0.7419 for 55 degrees of freedom
# Null hypothesis probability = 9.230869e-01
Photon flux (15-150 keV) in 163.5 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] : 15.9208 ( )
R^2/D10^2 : 7.87113E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 506.29 using 59 PHA bins.
# Reduced chi-squared = 8.8824 for 57 degrees of freedom
# Null hypothesis probability = 2.776185e-73
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.752e-07 2.886e-08
25- 50 2.829e-06 8.257e-08
50-150 5.003e-06 2.011e-07
15-150 8.507e-06 1.897e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 185.741 (59.5262 -104.39)
Norm : 3.75627 (-0.0977862 0.103458)
------------------------------------------------------------
# Chi-Squared = 48.55 using 59 PHA bins.
# Reduced chi-squared = 0.8518 for 57 degrees of freedom
# Null hypothesis probability = 7.795597e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.543e-06 7.129e-08
25- 50 2.943e-06 1.038e-07
50-150 6.301e-06 9.540e-07
15-150 1.079e-05 1.018e-06
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.44792 (-0.586998 0.620108)
R1^2/D10^2 : 0.816806 (-0.198302 0.282333)
kT2 [keV] : 27.9879 (-2.26928 2.85885)
R2^2/D10^2 : 8.45075E-03 (-0.0024791 0.00308297)
------------------------------------------------------------
# Chi-Squared = 52.86 using 59 PHA bins.
# Reduced chi-squared = 0.9612 for 55 degrees of freedom
# Null hypothesis probability = 5.566865e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.440e-06 1.075e-07
25- 50 3.003e-06 1.169e-07
50-150 6.391e-06 3.736e-07
15-150 1.083e-05 4.464e-07
Peak spectrum fit
Power-law model
Time interval is from 38.464 sec. to 39.464 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.27229 ( -0.132876 0.132576 )
Norm@50keV : 2.68755E-02 ( -0.00195988 0.00195941 )
------------------------------------------------------------
# Chi-Squared = 54.16 using 59 PHA bins.
# Reduced chi-squared = 0.9502 for 57 degrees of freedom
# Null hypothesis probability = 5.822405e-01
Photon flux (15-150 keV) in 1 sec: 3.19052 ( -0.240776 0.241377 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.6742e-07 ( -2.17385e-08 2.18524e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 38.464 sec. to 39.464 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.26820 ( -0.497655 0.136349 )
Epeak [keV] : 9969.60 ( )
Norm@50keV : 2.69944E-02 ( -0.00196724 0.0183823 )
------------------------------------------------------------
# Chi-Squared = 54.16 using 59 PHA bins.
# Reduced chi-squared = 0.9672 for 56 degrees of freedom
# Null hypothesis probability = 5.447903e-01
Photon flux (15-150 keV) in 1 sec: 3.18951 ( -0.25131 0.24082 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.45254e-07 ( -1.75966e-07 8.3641e-08 ) ergs/cm2
Band function
Time interval is from 38.464 sec. to 39.464 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.07802 ( 1.07802 1.07802 )
beta : -1.27229 ( -0.132567 0.132897 )
Epeak [keV] : 50.9903 ( -50.9903 -50.9903 )
Norm@50keV : 4.40010E-02 ( -0.0190712 3.87832 )
------------------------------------------------------------
# Chi-Squared = 54.16 using 59 PHA bins.
# Reduced chi-squared = 0.9848 for 55 degrees of freedom
# Null hypothesis probability = 5.066398e-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] : 18.9293 (-1.95961 2.24826)
R^2/D10^2 : 0.169587 (-0.0522345 0.0742213)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 101.50 using 59 PHA bins.
# Reduced chi-squared = 1.7807 for 57 degrees of freedom
# Null hypothesis probability = 2.636438e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.196e-08 1.828e-09
25- 50 5.738e-08 6.595e-09
50-150 1.510e-07 1.965e-08
15-150 2.203e-07 2.155e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.996 ( )
Norm : 13.2251 (-13.2251 -13.2251)
------------------------------------------------------------
# Chi-Squared = 68.21 using 59 PHA bins.
# Reduced chi-squared = 1.197 for 57 degrees of freedom
# Null hypothesis probability = 1.469227e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.293e-08 1.729e-08
25- 50 6.335e-08 3.350e-08
50-150 1.389e-07 7.245e-08
15-150 2.352e-07 1.237e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.75965 (-1.63233 1.99196)
R1^2/D10^2 : 3.24789 (-1.88505 5.86074)
kT2 [keV] : 30.2241 (-5.42667 9.35202)
R2^2/D10^2 : 3.18535E-02 (-0.0183814 0.0300924)
------------------------------------------------------------
# Chi-Squared = 53.98 using 59 PHA bins.
# Reduced chi-squared = 0.9815 for 55 degrees of freedom
# Null hypothesis probability = 5.135761e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.749e-08 1.081e-08
25- 50 5.739e-08 1.521e-08
50-150 1.847e-07 5.745e-08
15-150 2.695e-07 6.860e-08
Plot creation:
Fri Sep 14 10:32:21 EDT 2012