batgrbproduct Analysis for Trigger=509336
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 Dec 9 11:39:30 EST 2011
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger509336/batgroup_hand_proc
======================================================================
Trigger: 00509336 Segment: 000
BAT Trigger Time: 345107536 [s; MET]
Trigger Stop: 345107856 [s; MET]
UTC: 2011-12-09T07:12:08.342960 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 14.359609661518 Dec: -46.7882778283748 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 7.93
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.93
Flight Position: [ source = BAT ]
RA: 14.359609661518 Dec: -46.7882778283748 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 14.3203495858134 Dec: -46.7988622818998 [deg; J2000]
{ 00h 57m 16.9s , -46d 47' 55.9" }
+/- 1.90745525446864 [arcmin] (estimated 90% radius based on SNR)
+/- 0.869397535963928 [arcmin] (formal 1-sigma fit error)
SNR: 12.0911969619156
Angular difference between Flight and Ground position is 1.733251 arcmin
Partial Coding Fraction: 0.04345703 [ including projection effects ]
Duration
T90: 320 +/-
Measured from: 0
to: 320 [s; relative to TRIGTIME]
T50: 320 +/-
Measured from: 0
to: 320 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 320 second)
Measured from: 0
to: 320 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 320 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.139066 3.116815 2.154016 1.197385
0.330433 0.346127 0.318435 0.294209 [error]
Peak 2.139066 3.116815 2.154016 1.197385
0.330433 0.346127 0.318435 0.294209 [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 1.01e-06 1.59e-06 1.89e-06 4.35e-06 5.75e-06 8.84e-06 erg/cm2
Error 2.13e-07 2.06e-07 3.29e-07 1.61e-06 7.82e-07 1.87e-06 erg/cm2
Peak flux Power-law 2.66e-01 2.31e-01 1.37e-01 1.22e-01 6.86e-01 7.56e-01 ph/cm2/s
Error 5.72e-02 3.05e-02 2.30e-02 4.16e-02 9.04e-02 9.43e-02 ph/cm2/s
Fluence Cutoff-PL 9.80e-07 1.62e-06 1.91e-06 5.69e-06 7.82e-06 0.00e+00 erg/cm2
Error 2.54e-07 1.95e-07 3.58e-07 8.47e-07 2.72e-06 0.00e+00 erg/cm2
Peak flux Cutoff-PL 2.57e-01 2.35e-01 1.39e-01 9.94e-02 6.80e-01 7.31e-01 ph/cm2/s
Error 6.91e-02 3.56e-02 2.58e-02 6.55e-02 9.54e-02 9.30e-02 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 1.754 0.227 - - 5.07e-03 6.68e-04 72.170 57
CPL 1.571 0.774 118.6 0.0 6.27e-03 0.00e+00 72.060 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.754 0.227 - - 5.07e-03 6.68e-04 72.170 57
CPL 1.571 0.774 118.6 0.0 6.27e-03 0.00e+00 72.060 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 320.000 0.000 320.000
T90 320.000 0.000 320.000
T50 320.000 0.000 320.000
Peak 320.000 0.000 320.000
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
14.3203 -46.7989 0.0159 55.9614 -145.4818 9.7241967 12.091 TRIG_00509336
Foreground time interval of the image:
0.000 123.046 (delta_t = 123.046 [sec])
Background time interval of the image:
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 0.000 sec. to 123.046 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.75354 ( -0.222569 0.23055 )
Norm@50keV : 5.07016E-03 ( -0.000671953 0.000663337 )
------------------------------------------------------------
# Chi-Squared = 72.17 using 59 PHA bins.
# Reduced chi-squared = 1.266 for 57 degrees of freedom
# Null hypothesis probability = 8.500379e-02
Photon flux (15-150 keV) in 123 sec: 0.686469 ( -0.0900641 0.0906372 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.75332e-06 ( -7.79145e-07 7.84886e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 123.046 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.57124 ( -1.14018 0.407979 )
Epeak [keV] : 118.607 ( )
Norm@50keV : 6.26602E-03 ( )
------------------------------------------------------------
# Chi-Squared = 72.06 using 59 PHA bins.
# Reduced chi-squared = 1.287 for 56 degrees of freedom
# Null hypothesis probability = 7.287864e-02
Photon flux (15-150 keV) in 123 sec: 0.680261 ( -0.096106 0.094732 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.69388e-06 ( -8.63645e-07 8.30693e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 123.046 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.26495 ( 1.26675 1.26675 )
beta : -1.99940 ( 1.98695 0.442643 )
Epeak [keV] : 69.9091 ( -71.4197 134.556 )
Norm@50keV : 9.16402E-03 ( -0.00394683 0 )
------------------------------------------------------------
# Chi-Squared = 71.85 using 59 PHA bins.
# Reduced chi-squared = 1.306 for 55 degrees of freedom
# Null hypothesis probability = 6.313193e-02
Photon flux (15-150 keV) in 123 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] : 13.5172 (-1.81202 2.11736)
R^2/D10^2 : 0.107008 (-0.0447591 0.0750342)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 84.56 using 59 PHA bins.
# Reduced chi-squared = 1.483 for 57 degrees of freedom
# Null hypothesis probability = 1.034426e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.094e-07 1.125e-07
25- 50 1.828e-06 3.198e-07
50-150 2.159e-06 5.535e-07
15-150 4.496e-06 8.044e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 124.037 (-23.029 -100.405)
Norm : 2.89232 (-0.451879 0.572287)
------------------------------------------------------------
# Chi-Squared = 72.28 using 59 PHA bins.
# Reduced chi-squared = 1.268 for 57 degrees of freedom
# Null hypothesis probability = 8.357843e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.253e-07 1.662e-07
25- 50 1.665e-06 2.448e-07
50-150 3.019e-06 4.981e-07
15-150 5.609e-06 7.724e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.19935 (-1.44969 -3.19989)
R1^2/D10^2 : 20.0640 (-19.8856 1243.6)
kT2 [keV] : 16.0634 (-2.73179 6.20147)
R2^2/D10^2 : 5.15963E-02 (-0.0388887 0.0458301)
------------------------------------------------------------
# Chi-Squared = 73.31 using 59 PHA bins.
# Reduced chi-squared = 1.333 for 55 degrees of freedom
# Null hypothesis probability = 5.003955e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.019e-06 4.591e-07
25- 50 1.552e-06 4.929e-07
50-150 2.580e-06 9.663e-07
15-150 5.151e-06 1.296e-06
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 123.046 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.75354 ( -0.222569 0.23055 )
Norm@50keV : 5.07016E-03 ( -0.000671953 0.000663337 )
------------------------------------------------------------
# Chi-Squared = 72.17 using 59 PHA bins.
# Reduced chi-squared = 1.266 for 57 degrees of freedom
# Null hypothesis probability = 8.500379e-02
Photon flux (15-150 keV) in 123 sec: 0.686469 ( -0.0900641 0.0906372 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.75332e-06 ( -7.79145e-07 7.84886e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 123.046 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.57124 ( -1.14018 0.407979 )
Epeak [keV] : 118.607 ( )
Norm@50keV : 6.26602E-03 ( )
------------------------------------------------------------
# Chi-Squared = 72.06 using 59 PHA bins.
# Reduced chi-squared = 1.287 for 56 degrees of freedom
# Null hypothesis probability = 7.287864e-02
Photon flux (15-150 keV) in 123 sec: 0.680261 ( -0.096106 0.094732 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.69388e-06 ( -8.63645e-07 8.30693e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 123.046 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.26495 ( 1.26675 1.26675 )
beta : -1.99940 ( 1.98695 0.442643 )
Epeak [keV] : 69.9091 ( -71.4197 134.556 )
Norm@50keV : 9.16402E-03 ( -0.00394683 0 )
------------------------------------------------------------
# Chi-Squared = 71.85 using 59 PHA bins.
# Reduced chi-squared = 1.306 for 55 degrees of freedom
# Null hypothesis probability = 6.313193e-02
Photon flux (15-150 keV) in 123 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] : 13.5172 (-1.81202 2.11736)
R^2/D10^2 : 0.107008 (-0.0447591 0.0750342)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 84.56 using 59 PHA bins.
# Reduced chi-squared = 1.483 for 57 degrees of freedom
# Null hypothesis probability = 1.034426e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.094e-07 1.175e-07
25- 50 1.828e-06 3.635e-07
50-150 2.159e-06 5.824e-07
15-150 4.496e-06 7.362e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 124.037 (-23.029 -100.405)
Norm : 2.89232 (-0.451879 0.572287)
------------------------------------------------------------
# Chi-Squared = 72.28 using 59 PHA bins.
# Reduced chi-squared = 1.268 for 57 degrees of freedom
# Null hypothesis probability = 8.357843e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.253e-07 1.692e-07
25- 50 1.665e-06 2.288e-07
50-150 3.019e-06 4.920e-07
15-150 5.609e-06 7.620e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.19935 (-1.44969 -3.19989)
R1^2/D10^2 : 20.0640 (-19.884 1245.14)
kT2 [keV] : 16.0634 (-2.73179 6.20147)
R2^2/D10^2 : 5.15963E-02 (-0.0388887 0.0458301)
------------------------------------------------------------
# Chi-Squared = 73.31 using 59 PHA bins.
# Reduced chi-squared = 1.333 for 55 degrees of freedom
# Null hypothesis probability = 5.003955e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.019e-06 4.728e-07
25- 50 1.552e-06 5.082e-07
50-150 2.580e-06 7.884e-07
15-150 5.151e-06 1.424e-06
Plot creation:
Fri Dec 9 14:04:24 EST 2011