batgrbproduct Analysis for Trigger=534394
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 Sep 23 14:04:22 EDT 2012
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger534394/GCN5_download_cron
======================================================================
Trigger: 00534394 Segment: 000
BAT Trigger Time: 370045838.336 [s; MET]
Trigger Stop: 370045842.432 [s; MET]
UTC: 2012-09-22T22:30:28.656560 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 234.755696507915 Dec: -20.1770777233188 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.36
Image Trigger?: NO
Rate S/N Ratio: 7.54983443527075 [ if not an image trigger ]
Image S/N Ratio: 7.36
Flight Position: [ source = BAT ]
RA: 234.755696507915 Dec: -20.1770777233188 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 234.758492531301 Dec: -20.1809750037279 [deg; J2000]
{ 15h 39m 02.0s , -20d 10' 51.5" }
+/- 1.20587324025891 [arcmin] (estimated 90% radius based on SNR)
+/- 0.364772458120238 [arcmin] (formal 1-sigma fit error)
SNR: 23.2794735396126
Angular difference between Flight and Ground position is 0.281912 arcmin
Partial Coding Fraction: 0.3398438 [ including projection effects ]
Duration
T90: 157.055999934673 +/- 30.2400963128712
Measured from: -14.4839999079704
to: 142.572000026703 [s; relative to TRIGTIME]
T50: 95.0199999809265 +/- 4.27919431835037
Measured from: 7.30000007152557
to: 102.320000052452 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 99.2119999527931
to: 100.211999952793 [s; relative to TRIGTIME]
Total Fluence
Measured from: -22.5800000429153
to: 215.727999985218 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.476967 3.961129 1.990667 0.371911
0.125237 0.120388 0.103229 0.089368 [error]
Peak 0.080925 0.077971 0.042633 0.013538
0.007102 0.006840 0.005818 0.004672 [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 1.39e-06 1.79e-06 1.68e-06 2.79e-06 5.81e-06 7.66e-06 erg/cm2
Error 9.46e-08 7.33e-08 1.06e-07 3.68e-07 2.48e-07 4.62e-07 erg/cm2
Peak flux Power-law 9.64e-01 6.71e-01 3.07e-01 1.96e-01 2.04e+00 2.14e+00 ph/cm2/s
Error 1.45e-01 6.55e-02 5.10e-02 6.31e-02 2.04e-01 2.09e-01 ph/cm2/s
Fluence Cutoff-PL 1.28e-06 1.87e-06 1.69e-06 1.35e-06 6.20e-06 0.00e+00 erg/cm2
Error 1.17e-07 9.09e-08 1.14e-07 6.46e-07 7.22e-07 0.00e+00 erg/cm2
Peak flux Cutoff-PL 9.55e-01 6.76e-01 3.08e-01 1.77e-01 2.03e+00 2.12e+00 ph/cm2/s
Error 1.59e-01 7.76e-02 5.22e-02 9.59e-02 2.11e-01 2.42e-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 1.00e+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 2.089 0.080 - - 2.64e-03 1.20e-04 60.890 57
CPL 1.580 0.357 38.4 0.0 4.88e-03 0.00e+00 54.140 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.128 0.196 - - 1.28e-02 1.58e-03 48.460 57
CPL 1.971 0.359 8.8 -0.3 1.55e-02 0.00e+00 48.460 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: 152.192000 sec.
T50 in the 50-300 keV band: 100.608000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 238.308 -22.580 215.728
T90 157.056 -14.484 142.572
T50 95.020 7.300 102.320
Peak 1.000 99.212 100.212
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
234.7585 -20.1810 0.0083 44.4 -30.5 4.0026 23.3 TRIG_00534394
------------------------------------------
Foreground time interval of the image:
-22.580 29.324 (delta_t = 51.904 [sec])
30.664 35.065 (delta_t = 4.401 [sec])
Background time interval of the image:
-239.336 -56.406 (delta_t = 182.930 [sec])
-55.336 -22.580 (delta_t = 32.756 [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
Multiple GTIs in the spectrum
tstart tstop
-22.580000 29.324000
30.664000 215.728000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.08901 ( -0.0790673 0.0804487 )
Norm@50keV : 2.64075E-03 ( -0.000120676 0.00011982 )
------------------------------------------------------------
# Chi-Squared = 60.89 using 59 PHA bins.
# Reduced chi-squared = 1.068 for 57 degrees of freedom
# Null hypothesis probability = 3.377937e-01
Photon flux (15-150 keV) in 237 sec: 0.413219 ( -0.0181934 0.0182709 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.80885e-06 ( -2.47208e-07 2.4794e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-22.580000 29.324000
30.664000 215.728000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.58013 ( -0.372531 0.34061 )
Epeak [keV] : 38.3573 ( )
Norm@50keV : 4.88334E-03 ( )
------------------------------------------------------------
# Chi-Squared = 54.14 using 59 PHA bins.
# Reduced chi-squared = 0.9669 for 56 degrees of freedom
# Null hypothesis probability = 5.453993e-01
Photon flux (15-150 keV) in 237 sec: 0.398535 ( -0.02037 0.020459 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.20096e-06 ( -5.85058e-07 8.58935e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-22.580000 29.324000
30.664000 215.728000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.959320 ( -0.169977 0.179466 )
beta : 10.00000 ( -1.97895e+15 -1.97895e+15 )
Epeak [keV] : 0.961507 ( )
Norm@50keV : 7.22384E-20 ( )
------------------------------------------------------------
# Chi-Squared = 581.93 using 59 PHA bins.
# Reduced chi-squared = 10.581 for 55 degrees of freedom
# Null hypothesis probability = 4.453626e-89
Photon flux (15-150 keV) in 237 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] : 10.9232 ( )
R^2/D10^2 : 0.127722 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 157.42 using 59 PHA bins.
# Reduced chi-squared = 2.7618 for 57 degrees of freedom
# Null hypothesis probability = 2.404915e-11
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.536e-07 5.688e-08
25- 50 2.112e-06 9.468e-08
50-150 1.415e-06 1.382e-07
15-150 4.281e-06 1.896e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 65.3225 (-7.50022 9.03452)
Norm : 2.02321 (-0.148944 0.162883)
------------------------------------------------------------
# Chi-Squared = 55.42 using 59 PHA bins.
# Reduced chi-squared = 0.9723 for 57 degrees of freedom
# Null hypothesis probability = 5.345161e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.220e-06 7.181e-08
25- 50 1.904e-06 8.248e-08
50-150 2.321e-06 2.199e-07
15-150 5.445e-06 2.465e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.20364 (-1.10995 0.975021)
R1^2/D10^2 : 0.483614 (-0.165416 0.366527)
kT2 [keV] : 23.1083 (-4.77947 7.58349)
R2^2/D10^2 : 4.31038E-03 (-0.00283998 0.00728949)
------------------------------------------------------------
# Chi-Squared = 62.51 using 59 PHA bins.
# Reduced chi-squared = 1.137 for 55 degrees of freedom
# Null hypothesis probability = 2.268869e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.082e-06 1.341e-07
25- 50 1.959e-06 2.142e-07
50-150 2.401e-06 7.652e-07
15-150 5.442e-06 1.033e-06
Peak spectrum fit
Power-law model
Time interval is from 99.212 sec. to 100.212 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.12825 ( -0.190465 0.202321 )
Norm@50keV : 1.27676E-02 ( -0.00160225 0.00155709 )
------------------------------------------------------------
# Chi-Squared = 48.46 using 59 PHA bins.
# Reduced chi-squared = 0.8502 for 57 degrees of freedom
# Null hypothesis probability = 7.823688e-01
Photon flux (15-150 keV) in 1 sec: 2.03714 ( -0.203784 0.20433 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.18971e-07 ( -1.32056e-08 1.33721e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 99.212 sec. to 100.212 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.97073 ( -0.669114 0.0480245 )
Epeak [keV] : 8.76568 ( -6.8736 -7.42592 )
Norm@50keV : 1.54804E-02 ( )
------------------------------------------------------------
# Chi-Squared = 48.46 using 59 PHA bins.
# Reduced chi-squared = 0.8654 for 56 degrees of freedom
# Null hypothesis probability = 7.527644e-01
Photon flux (15-150 keV) in 1 sec: 2.02958 ( -0.21355 0.20911 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.4827e-07 ( -3.6618e-08 3.1063e-08 ) ergs/cm2
Band function
Time interval is from 99.212 sec. to 100.212 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -2.78679 ( 2.78679 2.78679 )
beta : -2.12824 ( -0.202321 0.190565 )
Epeak [keV] : 12.1234 ( -12.1234 -12.1234 )
Norm@50keV : 1.73530 ( -0.217769 0.21163 )
------------------------------------------------------------
# Chi-Squared = 48.46 using 59 PHA bins.
# Reduced chi-squared = 0.8811 for 55 degrees of freedom
# Null hypothesis probability = 7.209661e-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] : 10.0863 (-1.30584 1.48699)
R^2/D10^2 : 0.858265 (-0.352593 0.616033)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 81.10 using 59 PHA bins.
# Reduced chi-squared = 1.423 for 57 degrees of freedom
# Null hypothesis probability = 1.965859e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.783e-08 2.970e-09
25- 50 4.488e-08 5.680e-09
50-150 2.401e-08 6.575e-09
15-150 8.673e-08 1.067e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 61.4357 (-15.88 24.3583)
Norm : 10.3245 (-1.70784 2.03592)
------------------------------------------------------------
# Chi-Squared = 51.12 using 59 PHA bins.
# Reduced chi-squared = 0.8969 for 57 degrees of freedom
# Null hypothesis probability = 6.941336e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.604e-08 3.740e-09
25- 50 3.993e-08 4.260e-09
50-150 4.632e-08 1.063e-08
15-150 1.123e-07 1.479e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.48972 (-1.3105 1.68129)
R1^2/D10^2 : 16.1169 (-11.5983 36.0909)
kT2 [keV] : 17.3650 (-3.85066 6.71183)
R2^2/D10^2 : 8.21641E-02 (-0.0597811 0.148875)
------------------------------------------------------------
# Chi-Squared = 49.65 using 59 PHA bins.
# Reduced chi-squared = 0.9027 for 55 degrees of freedom
# Null hypothesis probability = 6.785199e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.998e-08 1.479e-08
25- 50 3.495e-08 1.165e-08
50-150 4.920e-08 2.292e-08
15-150 1.141e-07 3.951e-08
Plot creation:
Sun Sep 23 14:31:07 EDT 2012