batgrbproduct Analysis for Trigger=533120
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): Mon Sep 10 14:49:39 EDT 2012
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger533120/GCN5_download_cron
======================================================================
Trigger: 00533120 Segment: 000
BAT Trigger Time: 368926464 [s; MET]
Trigger Stop: 368926784 [s; MET]
UTC: 2012-09-09T23:34:14.367740 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 264.819323552384 Dec: -30.4048040183987 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 5.81
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 5.81
Flight Position: [ source = BAT ]
RA: 264.819323552384 Dec: -30.4048040183987 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 264.768813426127 Dec: -30.3930384224268 [deg; J2000]
{ 17h 39m 04.5s , -30d 23' 34.9" }
+/- 3.82388222277554 [arcmin] (estimated 90% radius based on SNR)
+/- 1.57972714376363 [arcmin] (formal 1-sigma fit error)
SNR: 4.4768143383062
Angular difference between Flight and Ground position is 2.707615 arcmin
Partial Coding Fraction: 1.015625 [ 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 0.600077 0.388405 0.145527 0.014773
0.107941 0.098744 0.085245 0.078834 [error]
Peak 0.600077 0.388405 0.145527 0.014773
0.107941 0.098744 0.085245 0.078834 [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 1.33e-07 1.45e-07 1.13e-07 1.45e-07 4.46e-07 5.36e-07 erg/cm2
Error 4.43e-08 4.54e-08 6.67e-08 1.90e-07 1.59e-07 2.65e-07 erg/cm2
Peak flux Power-law 1.37e-02 8.34e-03 3.25e-03 1.69e-03 2.62e-02 2.70e-02 ph/cm2/s
Error 4.67e-03 2.53e-03 1.85e-03 2.09e-03 7.25e-03 7.61e-03 ph/cm2/s
Fluence Cutoff-PL 1.45e-07 1.50e-07 7.97e-09 1.98e-12 3.03e-07 0.00e+00 erg/cm2
Error 5.20e-08 7.25e-08 7.92e-08 4.71e-08 2.56e-07 0.00e+00 erg/cm2
Peak flux Cutoff-PL 1.45e-02 9.17e-03 2.79e-04 3.68e-08 2.40e-02 2.40e-02 ph/cm2/s
Error 5.35e-03 3.98e-03 2.26e-03 3.01e-04 6.92e-03 6.92e-03 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 2.362 0.582 - - 1.45e-04 6.33e-05 40.410 57
CPL -5.390 0.000 24.5 6.0 8.86e+01 0.00e+00 38.950 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.362 0.582 - - 1.45e-04 6.33e-05 40.410 57
CPL -5.390 0.000 24.5 6.9 8.86e+01 0.00e+00 38.950 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 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
264.7688 -30.3930 0.0430 2.4 7.4 1.2076 4.5 TRIG_00533120
------------------------------------------
Foreground time interval of the image:
0.000 45.020 (delta_t = 45.020 [sec])
46.000 309.260 (delta_t = 263.260 [sec])
310.000 320.000 (delta_t = 10.000 [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
Multiple GTIs in the spectrum
tstart tstop
0.000000 45.020000
46.000000 309.260000
310.000000 320.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.36227 ( -0.534948 0.628629 )
Norm@50keV : 1.44712E-04 ( -6.26449e-05 6.39043e-05 )
------------------------------------------------------------
# Chi-Squared = 40.41 using 59 PHA bins.
# Reduced chi-squared = 0.7090 for 57 degrees of freedom
# Null hypothesis probability = 9.527643e-01
Photon flux (15-150 keV) in 318.3 sec: 2.61960E-02 ( -0.00724473 0.00725166 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.45626e-07 ( -1.50723e-07 1.67586e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 45.020000
46.000000 309.260000
310.000000 320.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -5.38952 ( )
Epeak [keV] : 24.5112 ( -6.73434 5.36086 )
Norm@50keV : 88.5835 ( )
------------------------------------------------------------
# Chi-Squared = 38.95 using 59 PHA bins.
# Reduced chi-squared = 0.6955 for 56 degrees of freedom
# Null hypothesis probability = 9.596808e-01
Photon flux (15-150 keV) in 318.3 sec: 2.39665E-02 ( -0.0068004 0.007031 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.03003e-07 ( -9.4305e-08 4.18612e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 45.020000
46.000000 309.260000
310.000000 320.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.99760 ( -808.33 -798.33 )
beta : -3.07940 ( 3.0794 0.945031 )
Epeak [keV] : 22.4123 ( -6.86506 6.65692 )
Norm@50keV : 77.1991 ( -77.1992 1083.72 )
------------------------------------------------------------
# Chi-Squared = 37.36 using 59 PHA bins.
# Reduced chi-squared = 0.6793 for 55 degrees of freedom
# Null hypothesis probability = 9.670925e-01
Photon flux (15-150 keV) in 318.3 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] : 6.25061 (-1.42042 1.98008)
R^2/D10^2 : 8.20168E-02 (-0.0820154 0.169828)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 39.01 using 59 PHA bins.
# Reduced chi-squared = 0.6844 for 57 degrees of freedom
# Null hypothesis probability = 9.670995e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.434e-07 8.387e-08
25- 50 1.561e-07 9.748e-08
50-150 1.686e-08 1.461e-08
15-150 3.164e-07 1.884e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 30.0877 (-14.2147 41.9285)
Norm : 0.210676 (-0.0966071 0.202327)
------------------------------------------------------------
# Chi-Squared = 39.71 using 59 PHA bins.
# Reduced chi-squared = 0.6967 for 57 degrees of freedom
# Null hypothesis probability = 9.604451e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.367e-07 5.865e-08
25- 50 1.564e-07 9.312e-08
50-150 8.600e-08 6.929e-08
15-150 3.791e-07 1.948e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.74395 (-5.74395 1.93049)
R1^2/D10^2 : 0.109972 (-0.109997 0.298296)
kT2 [keV] : 38.4460 (-38.4398 -38.4398)
R2^2/D10^2 : 4.36377E-05 (-4.36598e-05 0.000609852)
------------------------------------------------------------
# Chi-Squared = 37.17 using 59 PHA bins.
# Reduced chi-squared = 0.6759 for 55 degrees of freedom
# Null hypothesis probability = 9.687623e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.465e-07 8.589e-08
25- 50 1.485e-07 8.799e-08
50-150 1.770e-07 1.154e-07
15-150 4.720e-07 2.284e-07
Peak spectrum fit
Power-law model
Time interval is from 310.000 sec. to 320.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.36227 ( -0.534948 0.628629 )
Norm@50keV : 1.44712E-04 ( -6.26449e-05 6.39043e-05 )
------------------------------------------------------------
# Chi-Squared = 40.41 using 59 PHA bins.
# Reduced chi-squared = 0.7090 for 57 degrees of freedom
# Null hypothesis probability = 9.527643e-01
Photon flux (15-150 keV) in 318.3 sec: 2.61960E-02 ( -0.00724473 0.00725166 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.45626e-07 ( -1.50723e-07 1.67586e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 310.000 sec. to 320.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -5.38952 ( )
Epeak [keV] : 24.5112 ( -7.068 6.70975 )
Norm@50keV : 88.5835 ( )
------------------------------------------------------------
# Chi-Squared = 38.95 using 59 PHA bins.
# Reduced chi-squared = 0.6955 for 56 degrees of freedom
# Null hypothesis probability = 9.596808e-01
Photon flux (15-150 keV) in 318.3 sec: 2.39665E-02 ( -0.0068004 0.007031 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.03003e-07 ( -9.4305e-08 4.18612e-07 ) ergs/cm2
Band function
Time interval is from 310.000 sec. to 320.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.99760 ( -808.33 -798.33 )
beta : -3.07940 ( 3.0794 0.945031 )
Epeak [keV] : 22.4123 ( -6.86506 6.65692 )
Norm@50keV : 77.1991 ( -77.1992 1075.91 )
------------------------------------------------------------
# Chi-Squared = 37.36 using 59 PHA bins.
# Reduced chi-squared = 0.6793 for 55 degrees of freedom
# Null hypothesis probability = 9.670925e-01
Photon flux (15-150 keV) in 318.3 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] : 6.25061 (-1.42042 1.98008)
R^2/D10^2 : 8.20168E-02 (-0.0820154 0.169828)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 39.01 using 59 PHA bins.
# Reduced chi-squared = 0.6844 for 57 degrees of freedom
# Null hypothesis probability = 9.670995e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.434e-07 8.535e-08
25- 50 1.561e-07 9.885e-08
50-150 1.686e-08 1.435e-08
15-150 3.164e-07 1.907e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 30.0877 (-14.2147 41.9285)
Norm : 0.210676 (-0.0966071 0.202327)
------------------------------------------------------------
# Chi-Squared = 39.71 using 59 PHA bins.
# Reduced chi-squared = 0.6967 for 57 degrees of freedom
# Null hypothesis probability = 9.604451e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.367e-07 6.401e-08
25- 50 1.564e-07 8.032e-08
50-150 8.600e-08 7.105e-08
15-150 3.791e-07 1.911e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.74395 (-5.74395 1.93049)
R1^2/D10^2 : 0.109972 (-0.109997 0.298296)
kT2 [keV] : 38.4460 (-38.4398 -38.4398)
R2^2/D10^2 : 4.36377E-05 (-4.36598e-05 0.00061527)
------------------------------------------------------------
# Chi-Squared = 37.17 using 59 PHA bins.
# Reduced chi-squared = 0.6759 for 55 degrees of freedom
# Null hypothesis probability = 9.687623e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.465e-07 8.941e-08
25- 50 1.485e-07 9.048e-08
50-150 1.770e-07 1.219e-07
15-150 4.720e-07 2.513e-07
Plot creation:
Mon Sep 10 15:12:01 EDT 2012