batgrbproduct Analysis for Trigger=529076
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): Sun Jul 29 18:50:50 EDT 2012
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger529076/GCN5_download_cron
======================================================================
Trigger: 00529076 Segment: 000
BAT Trigger Time: 365238832 [s; MET]
Trigger Stop: 365238896 [s; MET]
UTC: 2012-07-29T07:13:42.522060 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 287.652132360276 Dec: -5.69873345159568 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 6.98
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 6.98
Flight Position: [ source = BAT ]
RA: 287.652132360276 Dec: -5.69873345159568 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 287.686299262955 Dec: -5.67792400701389 [deg; J2000]
{ 19h 10m 44.7s , -05d 40' 40.5" }
+/- 3.3707169689024 [arcmin] (estimated 90% radius based on SNR)
+/- 2.06460904249283 [arcmin] (formal 1-sigma fit error)
SNR: 5.36079744600751
Angular difference between Flight and Ground position is 2.391692 arcmin
Partial Coding Fraction: 0.953125 [ including projection effects ]
Duration
T90: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
T50: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 64 second)
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.225350 0.184443 0.081419 -0.022360
0.044785 0.041356 0.034678 0.029490 [error]
Peak 0.225350 0.184443 0.081419 -0.022360
0.044785 0.041356 0.034678 0.029490 [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 5.77e-08 7.34e-08 6.80e-08 1.11e-07 2.37e-07 3.10e-07 erg/cm2
Error 1.77e-08 1.81e-08 2.97e-08 9.57e-08 6.99e-08 1.33e-07 erg/cm2
Peak flux Power-law 2.95e-02 2.07e-02 9.61e-03 6.23e-03 6.28e-02 6.60e-02 ph/cm2/s
Error 9.20e-03 5.02e-03 4.06e-03 5.00e-03 1.49e-02 1.59e-02 ph/cm2/s
Fluence Cutoff-PL 5.67e-08 8.98e-08 2.86e-08 8.43e-10 1.76e-07 0.00e+00 erg/cm2
Error 1.96e-08 2.70e-08 4.47e-08 6.46e-08 1.37e-07 0.00e+00 erg/cm2
Peak flux Cutoff-PL 2.82e-02 2.57e-02 4.54e-03 7.36e-05 5.86e-02 5.86e-02 ph/cm2/s
Error 1.02e-02 7.90e-03 6.31e-03 5.06e-03 1.49e-02 1.59e-02 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 2.109 0.453 - - 3.97e-04 1.29e-04 63.840 57
CPL 0.030 4.249 30.6 0.0 9.89e-03 0.00e+00 62.330 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.109 0.453 - - 3.97e-04 1.29e-04 63.840 57
CPL 0.030 4.249 30.6 0.0 9.89e-03 0.00e+00 62.330 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 64.000 0.000 64.000
T90 64.000 0.000 64.000
T50 64.000 0.000 64.000
Peak 64.000 0.000 64.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
287.6863 -5.6779 0.0359 10.4 61.2 0.4415 5.4 TRIG_00529076
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [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
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.10945 ( -0.427555 0.478369 )
Norm@50keV : 3.97400E-04 ( -0.000130198 0.000127262 )
------------------------------------------------------------
# Chi-Squared = 63.84 using 59 PHA bins.
# Reduced chi-squared = 1.120 for 57 degrees of freedom
# Null hypothesis probability = 2.487164e-01
Photon flux (15-150 keV) in 64 sec: 6.28145E-02 ( -0.0148558 0.0148564 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.36533e-07 ( -6.75226e-08 7.2231e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.97849E-02 ( -6.16118 2.33602 )
Epeak [keV] : 30.5745 ( )
Norm@50keV : 9.88713E-03 ( )
------------------------------------------------------------
# Chi-Squared = 62.33 using 59 PHA bins.
# Reduced chi-squared = 1.113 for 56 degrees of freedom
# Null hypothesis probability = 2.613662e-01
Photon flux (15-150 keV) in 64 sec: 5.85739E-02 ( -0.0143522 0.0154918 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.75996e-07 ( -5.06656e-08 2.2234e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.99983 ( -11307 -11292 )
beta : -2.69757 ( -1.51318 0.704479 )
Epeak [keV] : 24.4984 ( -5.67256 5.57174 )
Norm@50keV : 93.8162 ( -93.8196 423.293 )
------------------------------------------------------------
# Chi-Squared = 59.59 using 59 PHA bins.
# Reduced chi-squared = 1.083 for 55 degrees of freedom
# Null hypothesis probability = 3.124925e-01
Photon flux (15-150 keV) in 64 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] : 7.72031 (-1.61097 2.10985)
R^2/D10^2 : 8.30303E-02 (-0.0520136 0.131822)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 62.43 using 59 PHA bins.
# Reduced chi-squared = 1.095 for 57 degrees of freedom
# Null hypothesis probability = 2.892949e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.571e-08 2.405e-08
25- 50 9.157e-08 4.768e-08
50-150 2.136e-08 1.449e-08
15-150 1.686e-07 8.525e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 45.3956 (-20.7332 61.805)
Norm : 0.379639 (-0.136349 0.232308)
------------------------------------------------------------
# Chi-Squared = 62.85 using 59 PHA bins.
# Reduced chi-squared = 1.103 for 57 degrees of freedom
# Null hypothesis probability = 2.768499e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.798e-08 2.171e-08
25- 50 8.034e-08 3.431e-08
50-150 7.099e-08 5.022e-08
15-150 2.093e-07 9.354e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.89452 (-6.89443 2.14485)
R1^2/D10^2 : 0.119907 (-0.119913 -0.119913)
kT2 [keV] : 42.2499 (-42.2517 -42.2517)
R2^2/D10^2 : 8.36716E-05 (-8.36673e-05 0.118118)
------------------------------------------------------------
# Chi-Squared = 60.10 using 59 PHA bins.
# Reduced chi-squared = 1.093 for 55 degrees of freedom
# Null hypothesis probability = 2.961490e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.886e-08 3.408e-08
25- 50 8.488e-08 4.915e-08
50-150 9.585e-08 5.405e-08
15-150 2.396e-07 1.124e-07
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.10945 ( -0.427555 0.478369 )
Norm@50keV : 3.97400E-04 ( -0.000130198 0.000127262 )
------------------------------------------------------------
# Chi-Squared = 63.84 using 59 PHA bins.
# Reduced chi-squared = 1.120 for 57 degrees of freedom
# Null hypothesis probability = 2.487164e-01
Photon flux (15-150 keV) in 64 sec: 6.28145E-02 ( -0.0148558 0.0148564 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.36533e-07 ( -6.75226e-08 7.2231e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.97849E-02 ( -6.16118 2.33602 )
Epeak [keV] : 30.5745 ( )
Norm@50keV : 9.88713E-03 ( )
------------------------------------------------------------
# Chi-Squared = 62.33 using 59 PHA bins.
# Reduced chi-squared = 1.113 for 56 degrees of freedom
# Null hypothesis probability = 2.613662e-01
Photon flux (15-150 keV) in 64 sec: 5.85739E-02 ( -0.0143522 0.0154918 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.75996e-07 ( -5.06656e-08 2.2234e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.99983 ( -11307 -11292 )
beta : -2.69757 ( -1.51318 0.704479 )
Epeak [keV] : 24.4984 ( -5.67256 5.57174 )
Norm@50keV : 93.8162 ( -93.8196 423.293 )
------------------------------------------------------------
# Chi-Squared = 59.59 using 59 PHA bins.
# Reduced chi-squared = 1.083 for 55 degrees of freedom
# Null hypothesis probability = 3.124925e-01
Photon flux (15-150 keV) in 64 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] : 7.72031 (-1.61097 2.10985)
R^2/D10^2 : 8.30303E-02 (-0.0520136 0.131822)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 62.43 using 59 PHA bins.
# Reduced chi-squared = 1.095 for 57 degrees of freedom
# Null hypothesis probability = 2.892949e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.571e-08 2.619e-08
25- 50 9.157e-08 5.164e-08
50-150 2.136e-08 1.446e-08
15-150 1.686e-07 7.458e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 45.3956 (-20.7332 61.805)
Norm : 0.379639 (-0.136349 0.232308)
------------------------------------------------------------
# Chi-Squared = 62.85 using 59 PHA bins.
# Reduced chi-squared = 1.103 for 57 degrees of freedom
# Null hypothesis probability = 2.768499e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.798e-08 2.130e-08
25- 50 8.034e-08 3.545e-08
50-150 7.099e-08 4.966e-08
15-150 2.093e-07 8.525e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.89452 (-6.89443 2.14485)
R1^2/D10^2 : 0.119907 (-0.119913 -0.119913)
kT2 [keV] : 42.2499 (-42.2517 -42.2517)
R2^2/D10^2 : 8.36716E-05 (-8.36673e-05 0.118118)
------------------------------------------------------------
# Chi-Squared = 60.10 using 59 PHA bins.
# Reduced chi-squared = 1.093 for 55 degrees of freedom
# Null hypothesis probability = 2.961490e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.886e-08 3.478e-08
25- 50 8.488e-08 5.059e-08
50-150 9.585e-08 5.782e-08
15-150 2.396e-07 1.217e-07
Plot creation:
Sun Jul 29 19:09:33 EDT 2012