batgrbproduct Analysis for Trigger=359443
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 v2.45
Process Start Time (local time): Sun Aug 9 03:35:32 EDT 2009
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger359443/GCN5_download_cron
======================================================================
Trigger: 00359443 Segment: 000
BAT Trigger Time: 271434226.752 [s; MET]
Trigger Stop: 271434227.776 [s; MET]
UTC: 2009-08-08T14:23:41.771760 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 104.98771884112 Dec: -9.95123873491037 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 5.66
Image Trigger?: NO
Rate S/N Ratio: 18.8944436276912 [ if not an image trigger ]
Image S/N Ratio: 5.66
Flight Position: [ source = BAT ]
RA: 104.98771884112 Dec: -9.95123873491037 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 105.005309739313 Dec: -10.0101234635576 [deg; J2000]
{ 07h 00m 01.3s , -10d 00' 36.4" }
+/- 4.31452555757238 [arcmin] (estimated 90% radius based on SNR)
+/- 2.6182996335118 [arcmin] (formal 1-sigma fit error)
SNR: 3.76765537691623
Angular difference between Flight and Ground position is 3.682825 arcmin
Partial Coding Fraction: 0.859375 [ including projection effects ]
Duration
T90: 1.02400004863739 +/-
Measured from: 0
to: 1.02400004863739 [s; relative to TRIGTIME]
T50: 1.02400004863739 +/-
Measured from: 0
to: 1.02400004863739 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 1.02400004863739 second)
Measured from: 0
to: 1.02400004863739 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 1.02400004863739 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.001114 0.006201 0.033154 0.014711
0.006923 0.007929 0.007329 0.008384 [error]
Peak 0.001114 0.006201 0.033154 0.014711
0.006923 0.007929 0.007329 0.008384 [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 1.09e-09 4.64e-09 1.67e-08 2.10e-07 4.81e-08 2.32e-07 erg/cm2
Error 1.48e-09 4.21e-09 1.17e-08 4.96e-07 1.96e-08 4.16e-07 erg/cm2
Peak flux Power-law 3.34e-02 7.59e-02 1.36e-01 5.79e-01 3.71e-01 8.24e-01 ph/cm2/s
Error 4.60e-02 7.04e-02 9.64e-02 1.04e+00 1.65e-01 9.62e-01 ph/cm2/s
Fluence Cutoff-PL 6.53e-10 5.04e-10 5.11e-09 2.06e-08 2.15e-08 4.06e-08 erg/cm2
Error 4.88e-09 9.36e-09 5.47e-07 1.57e-08 5.53e-07 0.00e+00 erg/cm2
Peak flux Cutoff-PL 1.76e-02 8.02e-02 1.72e-01 9.71e-02 3.41e-01 4.04e-01 ph/cm2/s
Error 4.50e-02 6.88e-02 7.59e-02 7.70e-01 1.61e-01 7.40e-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 0.155 0.467 - - 2.89e-03 2.07e-03 76.350 57
CPL -3.874 0.000 88.3 -31.3 1.16e-01 1.62e-01 76.170 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 0.155 0.467 - - 2.89e-03 2.07e-03 76.350 57
CPL -3.874 0.000 88.3 -31.3 1.16e-01 1.62e-01 76.170 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 1.024 0.000 1.024
T90 1.024 0.000 1.024
T50 1.024 0.000 1.024
Peak 1.024 0.000 1.024
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
105.0053 -10.0101 0.0509 28.7 -155.5 0.0612 3.8 TRIG_00359443
------------------------------------------
Foreground time interval of the image:
0.000 1.024 (delta_t = 1.024 [sec])
Background time interval of the image:
-23.551 -10.752 (delta_t = 12.799 [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 1.024 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.155381 ( -0.155381 0.779203 )
Norm@50keV : 2.89324E-03 ( -0.00245737 0.00167589 )
------------------------------------------------------------
# Chi-Squared = 76.35 using 59 PHA bins.
# Reduced chi-squared = 1.340 for 57 degrees of freedom
# Null hypothesis probability = 4.443891e-02
Photon flux (15-150 keV) in 1.024 sec: 0.371283 ( -0.1614 0.167823 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.81143e-08 ( -1.95564e-08 1.96651e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -3.87425 ( 3.95392 3.95392 )
Epeak [keV] : 88.3054 ( -24.7797 -87.345 )
Norm@50keV : 0.115976 ( -0.140559 0.18327 )
------------------------------------------------------------
# Chi-Squared = 76.17 using 59 PHA bins.
# Reduced chi-squared = 1.360 for 56 degrees of freedom
# Null hypothesis probability = 3.775837e-02
Photon flux (15-150 keV) in 1.024 sec: 0.340701 ( -0.136283 0.186649 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.06317e-08 ( -1.801e-08 1.33502e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.614501 ( 0.61552 0.61552 )
beta : -0.153827 ( -0.779362 0.155382 )
Epeak [keV] : 21.0252 ( -21.0358 -21.0358 )
Norm@50keV : 3.99434E-03 ( -0.00399731 51409.8 )
------------------------------------------------------------
# Chi-Squared = 76.35 using 59 PHA bins.
# Reduced chi-squared = 1.388 for 55 degrees of freedom
# Null hypothesis probability = 2.995444e-02
Photon flux (15-150 keV) in 1.024 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 1.024 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.155381 ( -0.155381 0.779203 )
Norm@50keV : 2.89324E-03 ( -0.00245737 0.00167589 )
------------------------------------------------------------
# Chi-Squared = 76.35 using 59 PHA bins.
# Reduced chi-squared = 1.340 for 57 degrees of freedom
# Null hypothesis probability = 4.443891e-02
Photon flux (15-150 keV) in 1.024 sec: 0.371283 ( -0.1614 0.167823 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.81143e-08 ( -1.95564e-08 1.96651e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -3.87425 ( 3.95392 3.95392 )
Epeak [keV] : 88.3054 ( -24.7797 -87.345 )
Norm@50keV : 0.115976 ( -0.140559 0.18327 )
------------------------------------------------------------
# Chi-Squared = 76.17 using 59 PHA bins.
# Reduced chi-squared = 1.360 for 56 degrees of freedom
# Null hypothesis probability = 3.775837e-02
Photon flux (15-150 keV) in 1.024 sec: 0.340701 ( -0.136283 0.186649 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.06317e-08 ( -1.801e-08 1.33502e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.614501 ( 0.61552 0.61552 )
beta : -0.153827 ( -0.779362 0.155382 )
Epeak [keV] : 21.0252 ( -21.0358 -21.0358 )
Norm@50keV : 3.99434E-03 ( -0.00399731 51409.8 )
------------------------------------------------------------
# Chi-Squared = 76.35 using 59 PHA bins.
# Reduced chi-squared = 1.388 for 55 degrees of freedom
# Null hypothesis probability = 2.995444e-02
Photon flux (15-150 keV) in 1.024 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Plot creation:
Sun Aug 9 03:46:40 EDT 2009