batgrbproduct Analysis for Trigger=529606
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 Aug 5 20:34:22 EDT 2012
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger529606/batgroup_hand_proc
======================================================================
Trigger: 00529606 Segment: 000
BAT Trigger Time: 365684776.448 [s; MET]
Trigger Stop: 365684777.472 [s; MET]
UTC: 2012-08-03T11:06:06.951500 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 314.22374452902 Dec: 53.2824925997842 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.12
Image Trigger?: NO
Rate S/N Ratio: 12.4899959967968 [ if not an image trigger ]
Image S/N Ratio: 8.12
Flight Position: [ source = BAT ]
RA: 314.22374452902 Dec: 53.2824925997842 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 314.220518609501 Dec: 53.2938008024961 [deg; J2000]
{ 20h 56m 52.9s , +53d 17' 37.7" }
+/- 0.846798365755655 [arcmin] (estimated 90% radius based on SNR)
+/- 0.32549317795257 [arcmin] (formal 1-sigma fit error)
SNR: 38.5735662427589
Angular difference between Flight and Ground position is 0.688287 arcmin
Partial Coding Fraction: 0.5859375 [ including projection effects ]
Duration
T90: 38.8839999437332 +/- 7.28350792838292
Measured from: -0.0640000104904175
to: 38.8199999332428 [s; relative to TRIGTIME]
T50: 12.2759999632835 +/- 1.84515799339355
Measured from: 3.89999997615814
to: 16.1759999394417 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 4.39599996805191
to: 5.39599996805191 [s; relative to TRIGTIME]
Total Fluence
Measured from: -2.67199999094009
to: 52.067999958992 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.665252 1.101444 0.805776 0.213283
0.043474 0.044176 0.039458 0.033656 [error]
Peak 0.052085 0.066125 0.059721 0.013281
0.006889 0.007428 0.006832 0.005419 [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 2.34e-07 4.44e-07 6.51e-07 2.05e-06 1.84e-06 3.37e-06 erg/cm2
Error 2.01e-08 2.30e-08 3.94e-08 2.69e-07 9.67e-08 2.97e-07 erg/cm2
Peak flux Power-law 4.39e-01 5.03e-01 4.14e-01 5.72e-01 1.56e+00 1.93e+00 ph/cm2/s
Error 8.91e-02 6.38e-02 5.49e-02 1.55e-01 1.80e-01 2.26e-01 ph/cm2/s
Fluence Cutoff-PL 2.07e-07 4.70e-07 6.79e-07 8.70e-07 2.23e-06 0.00e+00 erg/cm2
Error 2.44e-08 2.79e-08 4.42e-08 3.97e-07 4.04e-07 0.00e+00 erg/cm2
Peak flux Cutoff-PL 3.98e-01 5.30e-01 4.36e-01 3.21e-01 1.54e+00 1.69e+00 ph/cm2/s
Error 1.05e-01 7.63e-02 6.47e-02 1.84e-01 3.28e-01 0.00e+00 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 1.446 0.083 - - 3.52e-03 1.69e-04 55.450 57
CPL 0.801 0.379 95.2 37.1 7.30e-03 3.22e-03 45.620 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.280 0.187 - - 1.32e-02 1.48e-03 62.790 57
CPL 0.745 0.772 120.6 -36.6 2.43e-02 2.70e-02 61.330 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: 17.472000 sec.
T50 in the 50-300 keV band: 6.976000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 54.740 -2.672 52.068
T90 38.884 -0.064 38.820
T50 12.276 3.900 16.176
Peak 1.000 4.396 5.396
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
314.2205 53.2938 0.0050 28.0772 141.1975 1.7902839 38.574 TRIG_00529606
Foreground time interval of the image:
-2.672 10.853 (delta_t = 13.525 [sec])
Background time interval of the image:
-594.147 -498.933 (delta_t = 95.214 [sec])
-239.448 -2.672 (delta_t = 236.776 [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 -2.672 sec. to 52.068 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.44616 ( -0.0834525 0.0835418 )
Norm@50keV : 3.51667E-03 ( -0.000168992 0.000168856 )
------------------------------------------------------------
# Chi-Squared = 55.45 using 59 PHA bins.
# Reduced chi-squared = 0.9729 for 57 degrees of freedom
# Null hypothesis probability = 5.332827e-01
Photon flux (15-150 keV) in 54.74 sec: 0.432970 ( -0.0214554 0.0214898 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.84342e-06 ( -9.64721e-08 9.68526e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -2.672 sec. to 52.068 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.800614 ( -0.396429 0.362399 )
Epeak [keV] : 95.1566 ( -18.6897 55.5215 )
Norm@50keV : 7.30101E-03 ( -0.00240904 0.00402738 )
------------------------------------------------------------
# Chi-Squared = 45.62 using 59 PHA bins.
# Reduced chi-squared = 0.8146 for 56 degrees of freedom
# Null hypothesis probability = 8.376489e-01
Photon flux (15-150 keV) in 54.74 sec: 0.418782 ( -0.02278 0.022793 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.22639e-06 ( -3.13792e-07 4.93946e-07 ) ergs/cm2
Band function
Time interval is from -2.672 sec. to 52.068 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.327011 ( -0.661333 1.35348 )
beta : -1.78691 ( 1.7785 0.214099 )
Epeak [keV] : 66.0310 ( -18.119 49.2881 )
Norm@50keV : 1.40037E-02 ( -0.0104087 0.0832858 )
------------------------------------------------------------
# Chi-Squared = 43.55 using 59 PHA bins.
# Reduced chi-squared = 0.7918 for 55 degrees of freedom
# Null hypothesis probability = 8.672071e-01
Photon flux (15-150 keV) in 54.74 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] : 15.5444 (-0.884104 0.953165)
R^2/D10^2 : 4.40339E-02 (-0.00833851 0.0101234)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 104.56 using 59 PHA bins.
# Reduced chi-squared = 1.8344 for 57 degrees of freedom
# Null hypothesis probability = 1.253207e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.212e-07 1.048e-08
25- 50 4.972e-07 3.200e-08
50-150 8.301e-07 8.074e-08
15-150 1.448e-06 7.910e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.993 ( )
Norm : 1.78936 (-1.78936 -1.78936)
------------------------------------------------------------
# Chi-Squared = 53.39 using 59 PHA bins.
# Reduced chi-squared = 0.9367 for 57 degrees of freedom
# Null hypothesis probability = 6.111705e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.439e-07 1.256e-07
25- 50 4.692e-07 2.413e-07
50-150 1.029e-06 5.288e-07
15-150 1.742e-06 9.007e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.38361 (-1.69729 1.6469)
R1^2/D10^2 : 0.165941 (-0.0588545 0.121889)
kT2 [keV] : 31.2533 (-7.12366 15.4895)
R2^2/D10^2 : 2.70279E-03 (-0.00196904 0.00447156)
------------------------------------------------------------
# Chi-Squared = 45.29 using 59 PHA bins.
# Reduced chi-squared = 0.8235 for 55 degrees of freedom
# Null hypothesis probability = 8.217049e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.809e-07 3.117e-08
25- 50 4.982e-07 7.442e-08
50-150 1.093e-06 4.403e-07
15-150 1.772e-06 4.987e-07
Peak spectrum fit
Power-law model
Time interval is from 4.396 sec. to 5.396 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.28036 ( -0.187961 0.18613 )
Norm@50keV : 1.31550E-02 ( -0.00148251 0.00148096 )
------------------------------------------------------------
# Chi-Squared = 62.79 using 59 PHA bins.
# Reduced chi-squared = 1.102 for 57 degrees of freedom
# Null hypothesis probability = 2.786787e-01
Photon flux (15-150 keV) in 1 sec: 1.56388 ( -0.179773 0.18003 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.30629e-07 ( -1.62412e-08 1.63705e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 4.396 sec. to 5.396 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.745219 ( -0.901067 0.643363 )
Epeak [keV] : 120.634 ( -47.4536 -120.633 )
Norm@50keV : 2.42989E-02 ( -0.0120922 0.0418712 )
------------------------------------------------------------
# Chi-Squared = 61.33 using 59 PHA bins.
# Reduced chi-squared = 1.095 for 56 degrees of freedom
# Null hypothesis probability = 2.907528e-01
Photon flux (15-150 keV) in 1 sec: 1.53672 ( -0.18468 0.1843 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from 4.396 sec. to 5.396 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.99733 ( -727.941 -717.941 )
beta : -1.41911 ( -0.144798 0.222491 )
Epeak [keV] : 27.9838 ( -7.94997 7.13065 )
Norm@50keV : 605.454 ( -605.549 2730.44 )
------------------------------------------------------------
# Chi-Squared = 59.11 using 59 PHA bins.
# Reduced chi-squared = 1.075 for 55 degrees of freedom
# Null hypothesis probability = 3.278710e-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] : 16.9946 (-2.22119 2.64974)
R^2/D10^2 : 0.123590 (-0.0481766 0.075504)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 73.28 using 59 PHA bins.
# Reduced chi-squared = 1.286 for 57 degrees of freedom
# Null hypothesis probability = 7.202380e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.270e-09 1.598e-09
25- 50 3.216e-08 5.320e-09
50-150 6.631e-08 1.331e-08
15-150 1.057e-07 1.743e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.997 ( )
Norm : 6.48457 (-6.48457 -6.48457)
------------------------------------------------------------
# Chi-Squared = 67.18 using 59 PHA bins.
# Reduced chi-squared = 1.179 for 57 degrees of freedom
# Null hypothesis probability = 1.675738e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.614e-08 8.680e-09
25- 50 3.105e-08 1.688e-08
50-150 6.811e-08 3.679e-08
15-150 1.153e-07 6.220e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.96074 ( )
R1^2/D10^2 : 0.877893 (-0.687941 1.64552)
kT2 [keV] : 27.8446 (-8.60339 -28.0036)
R2^2/D10^2 : 1.83135E-02 (-0.0177182 0.0525735)
------------------------------------------------------------
# Chi-Squared = 73.28 using 59 PHA bins.
# Chi-Squared = 61.26 using 59 PHA bins.
# Reduced chi-squared = 1.332 for 55 degrees of freedom
# Reduced chi-squared = 1.114 for 55 degrees of freedom
# Null hypothesis probability = 5.026414e-02
# Null hypothesis probability = 2.616255e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Plot creation:
Sun Aug 5 22:52:01 EDT 2012