batgrbproduct Analysis for Trigger=354113
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 page will be updated for up to 8 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.44
Process Start Time (local time): Fri Jun 5 19:56:26 EDT 2009
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger354113/GCN5_download_cron
======================================================================
Trigger: 00354113 Segment: 000
BAT Trigger Time: 265903222.592 [s; MET]
Trigger Stop: 265903222.848 [s; MET]
UTC: 2009-06-05T14:00:17.790480 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 213.442907613068 Dec: 38.1895015608146 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 5.69
Image Trigger?: NO
Rate S/N Ratio: 31.3209195267317 [ if not an image trigger ]
Image S/N Ratio: 5.69
Flight Position: [ source = BAT ]
RA: 213.442907613068 Dec: 38.1895015608146 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 213.494452098505 Dec: 38.1190212719397 [deg; J2000]
{ 14h 13m 58.7s , +38d 07' 08.5" }
+/- 3.90743639921217 [arcmin] (estimated 90% radius based on SNR)
+/- 2.60977379924765 [arcmin] (formal 1-sigma fit error)
SNR: 4.34068726715668
Angular difference between Flight and Ground position is 4.878231 arcmin
Partial Coding Fraction: 0.9921875 [ including projection effects ]
Duration
T90: 0.255999982357025 +/-
Measured from: 0
to: 0.255999982357025 [s; relative to TRIGTIME]
T50: 0.255999982357025 +/-
Measured from: 0
to: 0.255999982357025 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 0.255999982357025 second)
Measured from: 0
to: 0.255999982357025 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 0.255999982357025 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.000320 0.010387 0.006311 0.000645
0.002295 0.002408 0.002110 0.001675 [error]
Peak 0.000320 0.010387 0.006311 0.000645
0.002295 0.002408 0.002110 0.001675 [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 1.06e-09 2.40e-09 4.32e-09 1.84e-08 1.18e-08 2.62e-08 erg/cm2
Error 6.74e-10 1.01e-09 1.79e-09 1.65e-08 4.66e-09 1.77e-08 erg/cm2
Peak flux Power-law 1.32e-01 1.63e-01 1.47e-01 2.29e-01 5.21e-01 6.71e-01 ph/cm2/s
Error 8.56e-02 7.00e-02 5.96e-02 1.87e-01 1.98e-01 2.61e-01 ph/cm2/s
Fluence Cutoff-PL 8.11e-10 2.88e-09 4.83e-09 3.03e-09 1.06e-08 1.16e-08 erg/cm2
Error 6.71e-10 1.43e-09 2.64e-09 1.44e-08 4.34e-09 1.53e-08 erg/cm2
Peak flux Cutoff-PL 9.85e-02 1.92e-01 1.69e-01 5.53e-02 5.03e-01 5.12e-01 ph/cm2/s
Error 8.77e-02 9.81e-02 8.69e-02 1.73e-01 1.94e-01 2.52e-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 1.04e-01 9.08e-02 1.87e-01 1.71e-01 5.56e-01 0.00e+00 ph/cm2/s
Error 9.49e-02 2.67e-01 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 1.156 0.583 - - 4.47e-03 1.66e-03 57.530 57
CPL -0.530 0.888 75.9 -12.6 3.13e-02 6.52e+00 55.700 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.156 0.583 - - 4.47e-03 1.66e-03 57.530 57
CPL -0.530 0.877 75.9 -12.6 3.13e-02 6.52e+00 55.700 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 0.256 0.000 0.256
T90 0.256 0.000 0.256
T50 0.256 0.000 0.256
Peak 0.256 0.000 0.256
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
213.4945 +38.1190 0.0441 13.7 -34.9 0.0193 4.3 TRIG_00354113
------------------------------------------
Foreground time interval of the image:
0.000 0.256 (delta_t = 0.256 [sec])
Background time interval of the image:
-60.592 -6.592 (delta_t = 54.000 [sec])
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 3) 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.
- 4) 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.
- 5) 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 0.256 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.15574 ( -0.605705 0.560887 )
Norm@50keV : 4.46746E-03 ( -0.00166286 0.00165826 )
------------------------------------------------------------
# Chi-Squared = 57.53 using 59 PHA bins.
# Reduced chi-squared = 1.009 for 57 degrees of freedom
# Null hypothesis probability = 4.552709e-01
Photon flux (15-150 keV) in 0.256 sec: 0.521159 ( -0.197215 0.199327 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.1757e-08 ( -4.59863e-09 4.72481e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.256 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.529710 ( 0.506837 2.2821 )
Epeak [keV] : 75.8504 ( -50.724 -75.8595 )
Norm@50keV : 3.12540E-02 ( -0.0308359 13.0062 )
------------------------------------------------------------
# Chi-Squared = 55.70 using 59 PHA bins.
# Reduced chi-squared = 0.9946 for 56 degrees of freedom
# Null hypothesis probability = 4.861748e-01
Photon flux (15-150 keV) in 0.256 sec: 0.502756 ( -0.191029 0.197707 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.06131e-08 ( -4.90601e-09 3.76916e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.256 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.531510 ( -0.973617 5.00218 )
beta : -10.00000 ( 1.26498e+11 1.26498e+11 )
Epeak [keV] : 75.7692 ( -37.9242 -75.8753 )
Norm@50keV : 3.13500E-02 ( -0.0310301 6.65919 )
------------------------------------------------------------
# Chi-Squared = 55.70 using 59 PHA bins.
# Reduced chi-squared = 1.013 for 55 degrees of freedom
# Null hypothesis probability = 4.482866e-01
Photon flux (15-150 keV) in 0.256 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Peak spectrum fit using the pre-slew DRM
Power-law model
Time interval is from 0.000 sec. to 0.256 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.15574 ( -0.605705 0.560887 )
Norm@50keV : 4.46746E-03 ( -0.00166286 0.00165826 )
------------------------------------------------------------
# Chi-Squared = 57.53 using 59 PHA bins.
# Reduced chi-squared = 1.009 for 57 degrees of freedom
# Null hypothesis probability = 4.552709e-01
Photon flux (15-150 keV) in 0.256 sec: 0.521159 ( -0.197215 0.199327 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.1757e-08 ( -4.59863e-09 4.72481e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.256 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.529710 ( 0.506837 2.26034 )
Epeak [keV] : 75.8504 ( -50.724 -75.8595 )
Norm@50keV : 3.12540E-02 ( -0.0308359 13.0062 )
------------------------------------------------------------
# Chi-Squared = 55.70 using 59 PHA bins.
# Reduced chi-squared = 0.9946 for 56 degrees of freedom
# Null hypothesis probability = 4.861748e-01
Photon flux (15-150 keV) in 0.256 sec: 0.502756 ( -0.191029 0.197707 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.06131e-08 ( -4.90601e-09 3.76916e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.256 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.531510 ( -0.973617 5.00111 )
beta : -10.00000 ( 1.26498e+11 1.26498e+11 )
Epeak [keV] : 75.7692 ( -37.9242 -75.8753 )
Norm@50keV : 3.13500E-02 ( -0.0310301 6.65919 )
------------------------------------------------------------
# Chi-Squared = 55.70 using 59 PHA bins.
# Reduced chi-squared = 1.013 for 55 degrees of freedom
# Null hypothesis probability = 4.482866e-01
Photon flux (15-150 keV) in 0.256 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Plot creation:
Fri Jun 5 20:03:27 EDT 2009