batgrbproduct Analysis for Trigger=547142
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): Tue Jan 29 05:37:30 EST 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger547142/GCN5_download_cron
======================================================================
Trigger: 00547142 Segment: 000
BAT Trigger Time: 381046600 [s; MET]
Trigger Stop: 381047880 [s; MET]
UTC: 2013-01-28T06:16:29.848640 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 268.413120535477 Dec: -25.7616429145444 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 8.81
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 8.81
Flight Position: [ source = BAT ]
RA: 268.413120535477 Dec: -25.7616429145444 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 268.429306215048 Dec: -25.745180736337 [deg; J2000]
{ 17h 53m 43.0s , -25d 44' 42.7" }
+/- 2.96479826509055 [arcmin] (estimated 90% radius based on SNR)
+/- 1.87192207213175 [arcmin] (formal 1-sigma fit error)
SNR: 6.43931391500083
Angular difference between Flight and Ground position is 1.319347 arcmin
Partial Coding Fraction: 0.9296875 [ including projection effects ]
Duration
T90: 1280 +/-
Measured from: 0
to: 1280 [s; relative to TRIGTIME]
T50: 1280 +/-
Measured from: 0
to: 1280 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 1280 second)
Measured from: 0
to: 1280 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 1280 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.865436 1.337025 0.956370 0.017906
0.171090 0.153422 0.127317 0.106650 [error]
Peak 1.865436 1.337025 0.956370 0.017906
0.171090 0.153422 0.127317 0.106650 [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 4.88e-07 6.36e-07 6.07e-07 1.03e-06 2.07e-06 2.76e-06 erg/cm2
Error 8.60e-08 7.17e-08 1.30e-07 4.53e-07 2.83e-07 5.79e-07 erg/cm2
Peak flux Power-law 2.00e-02 1.44e-02 6.89e-03 4.64e-03 4.35e-02 4.60e-02 ph/cm2/s
Error 3.61e-03 1.62e-03 1.42e-03 1.89e-03 4.97e-03 5.16e-03 ph/cm2/s
Fluence Cutoff-PL 4.95e-07 6.36e-07 5.99e-07 9.96e-07 2.72e-06 0.00e+00 erg/cm2
Error 8.62e-08 5.43e-08 1.30e-07 4.55e-07 6.38e-07 0.00e+00 erg/cm2
Peak flux Cutoff-PL 2.03e-02 1.44e-02 6.80e-03 4.50e-03 4.36e-02 4.59e-02 ph/cm2/s
Error 3.62e-03 1.63e-03 1.40e-03 2.76e-03 4.99e-03 5.16e-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 2.067 0.249 - - 2.81e-04 4.19e-05 0.000 57
CPL 2.332 0.000 131.1 0.0 2.10e-04 0.00e+00 0.000 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.067 0.249 - - 2.81e-04 4.19e-05 0.000 57
CPL 2.332 0.000 131.1 0.0 2.10e-04 0.00e+00 0.000 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 1280.000 0.000 1280.000
T90 1280.000 0.000 1280.000
T50 1280.000 0.000 1280.000
Peak 1280.000 0.000 1280.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
268.4293 -25.7452 0.0300 17.8 -42.0 3.6795 6.4 TRIG_00547142
------------------------------------------
Foreground time interval of the image:
165.000 381.120 (delta_t = 216.120 [sec])
382.000 718.900 (delta_t = 336.900 [sec])
720.000 963.041 (delta_t = 243.041 [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
165.000000 381.120000
382.000000 718.900000
720.000000 963.040700
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.06700 ( -0.239507 0.258034 )
Norm@50keV : 2.81291E-04 ( -4.28657e-05 4.0995e-05 )
------------------------------------------------------------
#Test statistic : Chi-Squared = 65.10 using 59 PHA bins.
# Reduced chi-squared = 1.142 for 57 degrees of freedom
# Null hypothesis probability = 2.156894e-01
Photon flux (15-150 keV) in 796.1 sec: 4.35472E-02 ( -0.00495925 0.0049738 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.07443e-06 ( -2.7932e-07 2.85768e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
165.000000 381.120000
382.000000 718.900000
720.000000 963.040700
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.33172 ( )
Epeak [keV] : 131.059 ( )
Norm@50keV : 2.10421E-04 ( )
------------------------------------------------------------
#Test statistic : Chi-Squared = 64.71 using 59 PHA bins.
# Reduced chi-squared = 1.155 for 56 degrees of freedom
# Null hypothesis probability = 1.988093e-01
Photon flux (15-150 keV) in 796.1 sec: 4.36283E-02 ( -0.005078 0.0048986 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.72271e-06 ( -6.45637e-07 6.29436e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
165.000000 381.120000
382.000000 718.900000
720.000000 963.040700
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -2.55457 ( 7.51486 2.55457 )
beta : -2.06702 ( -0.258021 0.239412 )
Epeak [keV] : 51.4412 ( -51.4412 -51.4412 )
Norm@50keV : 3.82312E-02 ( -0.00582597 0.00557194 )
------------------------------------------------------------
#Test statistic : Chi-Squared = 65.10 using 59 PHA bins.
# Reduced chi-squared = 1.184 for 55 degrees of freedom
# Null hypothesis probability = 1.655261e-01
Photon flux (15-150 keV) in 796.1 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] : 11.8096 (-2.26952 2.55704)
R^2/D10^2 : 9.80563E-03 (-0.00495177 0.0120061)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Test statistic : Chi-Squared = 103.08 using 59 PHA bins.
# Reduced chi-squared = 1.8085 for 57 degrees of freedom
# Null hypothesis probability = 1.799153e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.299e-07 4.956e-08
25- 50 7.100e-07 1.302e-07
50-150 5.890e-07 1.652e-07
15-150 1.529e-06 2.555e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 73.3868 (-24.1307 45.5524)
Norm : 0.203387 (-0.036264 0.0468842)
------------------------------------------------------------
#Test statistic : Chi-Squared = 69.90 using 59 PHA bins.
# Reduced chi-squared = 1.226 for 57 degrees of freedom
# Null hypothesis probability = 1.172275e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.174e-07 6.592e-08
25- 50 6.724e-07 8.351e-08
50-150 8.939e-07 3.318e-07
15-150 1.984e-06 3.328e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.67483 (-0.784339 0.919361)
R1^2/D10^2 : 1.00774 (-0.681587 1.98535)
kT2 [keV] : 19.2039 (-3.39497 4.59319)
R2^2/D10^2 : 1.39905E-03 (-0.000752642 0.00146217)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.57 using 59 PHA bins.
#Test statistic : Chi-Squared = 55.57 using 59 PHA bins.
# Reduced chi-squared = 1.010 for 55 degrees of freedom
# Null hypothesis probability = 4.530829e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.569e-07 2.655e-07
25- 50 5.239e-07 1.892e-07
50-150 1.059e-06 4.655e-07
15-150 2.140e-06 6.675e-07
Peak spectrum fit
Power-law model
Time interval is from 720.000 sec. to 963.041 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.06700 ( -0.239507 0.258034 )
Norm@50keV : 2.81291E-04 ( -4.28657e-05 4.0995e-05 )
------------------------------------------------------------
#Test statistic : Chi-Squared = 65.10 using 59 PHA bins.
# Reduced chi-squared = 1.142 for 57 degrees of freedom
# Null hypothesis probability = 2.156894e-01
Photon flux (15-150 keV) in 796.1 sec: 4.35472E-02 ( -0.00495925 0.0049738 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.07443e-06 ( -2.7932e-07 2.85768e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 720.000 sec. to 963.041 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.33172 ( )
Epeak [keV] : 131.059 ( )
Norm@50keV : 2.10421E-04 ( )
------------------------------------------------------------
#Test statistic : Chi-Squared = 64.71 using 59 PHA bins.
# Reduced chi-squared = 1.155 for 56 degrees of freedom
# Null hypothesis probability = 1.988093e-01
Photon flux (15-150 keV) in 796.1 sec: 4.36283E-02 ( -0.005078 0.0048986 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.72271e-06 ( -6.45637e-07 6.29436e-07 ) ergs/cm2
Band function
Time interval is from 720.000 sec. to 963.041 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -2.55457 ( 7.51486 2.55457 )
beta : -2.06702 ( -0.258021 0.239412 )
Epeak [keV] : 51.4412 ( -51.4412 -51.4412 )
Norm@50keV : 3.82312E-02 ( -0.00582597 0.00557194 )
------------------------------------------------------------
#Test statistic : Chi-Squared = 65.10 using 59 PHA bins.
# Reduced chi-squared = 1.184 for 55 degrees of freedom
# Null hypothesis probability = 1.655261e-01
Photon flux (15-150 keV) in 796.1 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] : 11.8096 (-2.26952 2.55704)
R^2/D10^2 : 9.80563E-03 (-0.00495177 0.0120061)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Test statistic : Chi-Squared = 103.08 using 59 PHA bins.
# Reduced chi-squared = 1.8085 for 57 degrees of freedom
# Null hypothesis probability = 1.799153e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.299e-07 5.187e-08
25- 50 7.100e-07 1.162e-07
50-150 5.890e-07 1.586e-07
15-150 1.529e-06 2.798e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 73.3868 (-24.1307 45.5524)
Norm : 0.203387 (-0.036264 0.0468842)
------------------------------------------------------------
#Test statistic : Chi-Squared = 69.90 using 59 PHA bins.
# Reduced chi-squared = 1.226 for 57 degrees of freedom
# Null hypothesis probability = 1.172275e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.174e-07 7.085e-08
25- 50 6.724e-07 8.829e-08
50-150 8.939e-07 2.961e-07
15-150 1.984e-06 3.248e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.67483 (-0.784339 0.919361)
R1^2/D10^2 : 1.00774 (-0.681587 1.98535)
kT2 [keV] : 19.2039 (-3.39497 4.59319)
R2^2/D10^2 : 1.39905E-03 (-0.000752642 0.00146217)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.57 using 59 PHA bins.
#Test statistic : Chi-Squared = 55.57 using 59 PHA bins.
# Reduced chi-squared = 1.010 for 55 degrees of freedom
# Null hypothesis probability = 4.530829e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.569e-07 2.781e-07
25- 50 5.239e-07 1.857e-07
50-150 1.059e-06 4.388e-07
15-150 2.140e-06 7.085e-07
Plot creation:
Tue Jan 29 05:47:32 EST 2013