batgrbproduct Analysis for Trigger=429357
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 Jul 20 00:15:50 EDT 2010
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger429357/GCN5_download_cron
======================================================================
Trigger: 00429357 Segment: 000
BAT Trigger Time: 301203063.936 [s; MET]
Trigger Stop: 301203068.032 [s; MET]
UTC: 2010-07-19T03:30:57.937820 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 112.263004490575 Dec: -5.83709688030733 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.27
Image Trigger?: NO
Rate S/N Ratio: 7.41619848709566 [ if not an image trigger ]
Image S/N Ratio: 7.27
Flight Position: [ source = BAT ]
RA: 112.263004490575 Dec: -5.83709688030733 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 112.295902810673 Dec: -5.8518989247479 [deg; J2000]
{ 07h 29m 11.0s , -05d 51' 06.8" }
+/- 2.01501195272084 [arcmin] (estimated 90% radius based on SNR)
+/- 0.820128145586409 [arcmin] (formal 1-sigma fit error)
SNR: 11.1798520475841
Angular difference between Flight and Ground position is 2.155142 arcmin
Partial Coding Fraction: 0.5703125 [ including projection effects ]
Duration
T90: 36 +/- 7.28010988928052
Measured from: -3.93599987030029
to: 32.0640001296997 [s; relative to TRIGTIME]
T50: 13 +/- 8.24621125123532
Measured from: 2.06400012969971
to: 15.0640001296997 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 2.06400001049042
to: 3.06400001049042 [s; relative to TRIGTIME]
Total Fluence
Measured from: -3.93599998950958
to: 35.0640000104904 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.283780 0.345077 0.207886 0.030519
0.039062 0.040758 0.037472 0.034961 [error]
Peak 0.017774 0.019364 0.026908 0.009700
0.006452 0.006612 0.006266 0.005764 [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 8.73e-08 1.43e-07 1.78e-07 4.37e-07 5.31e-07 8.45e-07 erg/cm2
Error 1.79e-08 1.89e-08 3.72e-08 1.91e-07 8.63e-08 2.25e-07 erg/cm2
Peak flux Power-law 1.45e-01 1.83e-01 1.68e-01 2.70e-01 5.88e-01 7.66e-01 ph/cm2/s
Error 7.69e-02 5.84e-02 5.04e-02 1.84e-01 1.58e-01 2.19e-01 ph/cm2/s
Fluence Cutoff-PL 8.73e-08 1.43e-07 1.78e-07 4.33e-07 5.31e-07 8.40e-07 erg/cm2
Error 1.82e-08 1.89e-08 3.24e-08 2.15e-07 8.64e-08 3.03e-07 erg/cm2
Peak flux Cutoff-PL 1.45e-01 1.83e-01 1.68e-01 2.68e-01 5.87e-01 7.64e-01 ph/cm2/s
Error 1.14e-01 5.93e-02 5.56e-02 1.82e-01 1.58e-01 2.62e-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 1.687 0.249 - - 1.47e-03 2.23e-04 61.720 57
CPL 1.662 1.031 555.8 0.0 1.52e-03 0.00e+00 61.740 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.122 0.496 - - 5.06e-03 1.32e-03 54.940 57
CPL 1.113 0.608 9999.3 0.0 5.07e-03 2.19e-02 54.940 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: 8.320000 sec.
T50 in the 50-300 keV band: 4.736000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 39.000 -3.936 35.064
T90 36.000 -3.936 32.064
T50 13.000 2.064 15.064
Peak 1.000 2.064 3.064
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
112.2959 -5.8519 0.0172 27.5 -116.1 0.9023 11.2 TRIG_00429357
------------------------------------------
Foreground time interval of the image:
-3.936 35.064 (delta_t = 39.000 [sec])
Background time interval of the image:
-239.936 -3.936 (delta_t = 236.000 [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 -3.936 sec. to 35.064 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.68744 ( -0.243982 0.253952 )
Norm@50keV : 1.46935E-03 ( -0.000226011 0.000219891 )
------------------------------------------------------------
# Chi-Squared = 61.72 using 59 PHA bins.
# Reduced chi-squared = 1.083 for 57 degrees of freedom
# Null hypothesis probability = 3.110729e-01
Photon flux (15-150 keV) in 39 sec: 0.194298 ( -0.0256352 0.0256425 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.31114e-07 ( -8.5215e-08 8.74294e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -3.936 sec. to 35.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.66153 ( -0.896838 1.16549 )
Epeak [keV] : 555.750 ( )
Norm@50keV : 1.51843E-03 ( )
------------------------------------------------------------
# Chi-Squared = 61.74 using 59 PHA bins.
# Reduced chi-squared = 1.103 for 56 degrees of freedom
# Null hypothesis probability = 2.784140e-01
Photon flux (15-150 keV) in 39 sec: 0.194254 ( -0.025654 0.02558 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.30911e-07 ( -8.51877e-08 8.7516e-08 ) ergs/cm2
Band function
Time interval is from -3.936 sec. to 35.064 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.18455 ( 1.17901 1.17901 )
beta : -1.71881 ( 1.71911 0.271948 )
Epeak [keV] : 44.0591 ( -43.3935 -43.3935 )
Norm@50keV : 3.37260E-03 ( -0.00114212 289861 )
------------------------------------------------------------
# Chi-Squared = 61.64 using 59 PHA bins.
# Reduced chi-squared = 1.121 for 55 degrees of freedom
# Null hypothesis probability = 2.506348e-01
Photon flux (15-150 keV) in 39 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] : ( )
R^2/D10^2 : ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25
25- 50
50-150
15-150
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : ( )
Norm : ( )
------------------------------------------------------------
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25
25- 50
50-150
15-150
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : ( )
R1^2/D10^2 : ( )
kT2 [keV] : ( )
R2^2/D10^2 : ( )
------------------------------------------------------------
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25
25- 50
50-150
15-150
Peak spectrum fit
Power-law model
Time interval is from 2.064 sec. to 3.064 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.12236 ( -0.509469 0.482545 )
Norm@50keV : 5.05501E-03 ( -0.00131784 0.00131564 )
------------------------------------------------------------
# Chi-Squared = 54.94 using 59 PHA bins.
# Reduced chi-squared = 0.9638 for 57 degrees of freedom
# Null hypothesis probability = 5.528348e-01
Photon flux (15-150 keV) in 1 sec: 0.587686 ( -0.157274 0.15805 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.24808e-08 ( -1.51602e-08 1.54167e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 2.064 sec. to 3.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.11308 ( -0.729098 0.486885 )
Epeak [keV] : 9999.31 ( -9963.6 -9963.6 )
Norm@50keV : 5.07240E-03 ( -0.00132064 0.0424306 )
------------------------------------------------------------
# Chi-Squared = 54.94 using 59 PHA bins.
# Reduced chi-squared = 0.9811 for 56 degrees of freedom
# Null hypothesis probability = 5.149605e-01
Photon flux (15-150 keV) in 1 sec: 0.587458 ( -0.157151 0.157872 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.24351e-08 ( -1.509e-08 1.54825e-08 ) ergs/cm2
Band function
Time interval is from 2.064 sec. to 3.064 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.937738 ( 0.937861 0.937861 )
beta : -1.12230 ( 1.12235 0.509473 )
Epeak [keV] : 63.0837 ( -63.0328 -63.0328 )
Norm@50keV : 8.04506E-03 ( -0.00429481 629243 )
------------------------------------------------------------
# Chi-Squared = 54.94 using 59 PHA bins.
# Reduced chi-squared = 0.9989 for 55 degrees of freedom
# Null hypothesis probability = 4.769910e-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] : ( )
R^2/D10^2 : ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25
25- 50
50-150
15-150
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : ( )
Norm : ( )
------------------------------------------------------------
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25
25- 50
50-150
15-150
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : ( )
R1^2/D10^2 : ( )
kT2 [keV] : ( )
R2^2/D10^2 : ( )
------------------------------------------------------------
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25
25- 50
50-150
15-150
Plot creation:
Thu May 26 16:22:30 EDT 2011