batgrbproduct Analysis for Trigger=524584
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 Jun 19 04:03:11 EDT 2012
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger524584/GCN5_download_cron
======================================================================
Trigger: 00524584 Segment: 000
BAT Trigger Time: 361712000 [s; MET]
Trigger Stop: 361712432 [s; MET]
UTC: 2012-06-18T11:33:11.668920 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 47.0166680680055 Dec: 40.9657775404673 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 5.83
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 5.83
Flight Position: [ source = BAT ]
RA: 47.0166680680055 Dec: 40.9657775404673 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 47.0002023638298 Dec: 40.9773688171109 [deg; J2000]
{ 03h 08m 00.0s , +40d 58' 38.5" }
+/- 4.05529184220222 [arcmin] (estimated 90% radius based on SNR)
+/- 3.79226716827048 [arcmin] (formal 1-sigma fit error)
SNR: 4.11637905709489
Angular difference between Flight and Ground position is 1.019853 arcmin
Partial Coding Fraction: 0.4765625 [ including projection effects ]
Duration
T90: 432 +/- 0.016
Measured from: 0
to: 432 [s; relative to TRIGTIME]
T50: 432 +/- 0.016
Measured from: 0
to: 432 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 432 second)
Measured from: 0
to: 432 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 432 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.602613 0.642883 0.082361 -0.060126
0.168723 0.172750 0.150530 0.130542 [error]
Peak 0.602613 0.642883 0.082361 -0.060126
0.168723 0.172750 0.150530 0.130542 [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 2.78e-07 2.29e-07 1.28e-07 1.06e-07 6.82e-07 7.42e-07 erg/cm2
Error 8.88e-08 9.13e-08 9.86e-08 1.67e-07 2.64e-07 3.48e-07 erg/cm2
Peak flux Power-law 2.14e-02 9.87e-03 2.76e-03 9.63e-04 3.46e-02 3.50e-02 ph/cm2/s
Error 6.94e-03 3.78e-03 2.06e-03 1.42e-03 1.04e-02 1.06e-02 ph/cm2/s
Fluence Cutoff-PL 2.75e-07 2.87e-07 6.06e-08 1.25e-09 6.24e-07 0.00e+00 erg/cm2
Error 9.80e-08 1.29e-07 9.84e-08 7.45e-08 2.27e-07 0.00e+00 erg/cm2
Peak flux Cutoff-PL 2.06e-02 1.25e-02 1.45e-03 1.62e-05 3.46e-02 3.46e-02 ph/cm2/s
Error 7.66e-03 5.23e-03 2.15e-03 5.23e-04 1.00e-02 9.96e-03 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 2.840 0.704 - - 1.41e-04 8.23e-05 65.320 57
CPL 0.434 0.000 20.6 0.0 6.09e-03 0.00e+00 63.030 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.840 0.704 - - 1.41e-04 8.23e-05 65.320 57
CPL 0.434 0.000 20.6 0.0 6.09e-03 0.00e+00 63.030 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 432.000 0.000 432.000
T90 432.000 0.000 432.000
T50 432.000 0.000 432.000
Peak 432.000 0.000 432.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
47.0002 +40.9774 0.0466 40.6 -150.3 1.9573 4.1 TRIG_00524584
------------------------------------------
Foreground time interval of the image:
0.000 432.000 (delta_t = 432.000 [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 432.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.83957 ( -0.596838 0.810367 )
Norm@50keV : 1.40818E-04 ( -7.78935e-05 8.67192e-05 )
------------------------------------------------------------
# Chi-Squared = 65.32 using 59 PHA bins.
# Reduced chi-squared = 1.146 for 57 degrees of freedom
# Null hypothesis probability = 2.100815e-01
Photon flux (15-150 keV) in 432 sec: 3.45503E-02 ( -0.0103541 0.0104206 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.82029e-07 ( -2.48243e-07 2.80451e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 432.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.434324 ( )
Epeak [keV] : 20.6252 ( )
Norm@50keV : 6.08996E-03 ( )
------------------------------------------------------------
# Chi-Squared = 63.03 using 59 PHA bins.
# Reduced chi-squared = 1.126 for 56 degrees of freedom
# Null hypothesis probability = 2.416727e-01
Photon flux (15-150 keV) in 432 sec: 3.45695E-02 ( -0.0099701 0.010065 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.2357e-07 ( -2.07941e-07 2.46413e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 432.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.443331 ( 1.29132 1.29132 )
beta : -10.00000 ( 951206 951216 )
Epeak [keV] : 20.5825 ( -18.8872 11.6 )
Norm@50keV : 6.00372E-03 ( -0.0078436 30.0837 )
------------------------------------------------------------
# Chi-Squared = 63.03 using 59 PHA bins.
# Reduced chi-squared = 1.146 for 55 degrees of freedom
# Null hypothesis probability = 2.134715e-01
Photon flux (15-150 keV) in 432 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] : 6.22299 (-1.72503 2.23865)
R^2/D10^2 : 0.114968 (-0.1149 0.361839)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 63.39 using 59 PHA bins.
# Reduced chi-squared = 1.112 for 57 degrees of freedom
# Null hypothesis probability = 2.612495e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.688e-07 1.574e-07
25- 50 2.899e-07 1.753e-07
50-150 3.076e-08 2.832e-08
15-150 5.895e-07 3.508e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 22.0855 (-9.88856 19.123)
Norm : 0.388091 (-0.18298 0.413908)
------------------------------------------------------------
# Chi-Squared = 63.39 using 59 PHA bins.
# Reduced chi-squared = 1.112 for 57 degrees of freedom
# Null hypothesis probability = 2.612234e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.815e-07 1.531e-07
25- 50 2.653e-07 1.651e-07
50-150 9.342e-08 8.695e-08
15-150 6.403e-07 3.890e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.19649 (-4.20055 -4.20055)
R1^2/D10^2 : 0.332144 (-0.328664 -0.328664)
kT2 [keV] : 8.44880 (-8.46941 -8.46941)
R2^2/D10^2 : 1.95285E-02 (-0.0192546 0.394173)
------------------------------------------------------------
# Chi-Squared = 62.91 using 59 PHA bins.
# Reduced chi-squared = 1.144 for 55 degrees of freedom
# Null hypothesis probability = 2.165172e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.769e-07 1.937e-07
25- 50 2.848e-07 2.527e-07
50-150 6.909e-08 5.979e-08
15-150 6.308e-07 4.082e-07
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 432.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.83957 ( -0.596838 0.810367 )
Norm@50keV : 1.40818E-04 ( -7.78935e-05 8.67192e-05 )
------------------------------------------------------------
# Chi-Squared = 65.32 using 59 PHA bins.
# Reduced chi-squared = 1.146 for 57 degrees of freedom
# Null hypothesis probability = 2.100815e-01
Photon flux (15-150 keV) in 432 sec: 3.45503E-02 ( -0.0103541 0.0104206 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.82029e-07 ( -2.48243e-07 2.80451e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 432.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.434324 ( )
Epeak [keV] : 20.6252 ( )
Norm@50keV : 6.08996E-03 ( )
------------------------------------------------------------
# Chi-Squared = 63.03 using 59 PHA bins.
# Reduced chi-squared = 1.126 for 56 degrees of freedom
# Null hypothesis probability = 2.416727e-01
Photon flux (15-150 keV) in 432 sec: 3.45695E-02 ( -0.0099701 0.010065 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.2357e-07 ( -2.07941e-07 2.46413e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 432.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.443331 ( 1.29132 1.29132 )
beta : -10.00000 ( 951206 951216 )
Epeak [keV] : 20.5825 ( -17.735 11.6035 )
Norm@50keV : 6.00372E-03 ( -0.0078436 30.0857 )
------------------------------------------------------------
# Chi-Squared = 63.03 using 59 PHA bins.
# Reduced chi-squared = 1.146 for 55 degrees of freedom
# Null hypothesis probability = 2.134715e-01
Photon flux (15-150 keV) in 432 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] : 6.22299 (-1.72503 2.23865)
R^2/D10^2 : 0.114968 (-0.1149 0.361839)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 63.39 using 59 PHA bins.
# Reduced chi-squared = 1.112 for 57 degrees of freedom
# Null hypothesis probability = 2.612495e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.688e-07 1.630e-07
25- 50 2.899e-07 1.896e-07
50-150 3.076e-08 2.730e-08
15-150 5.895e-07 3.566e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 22.0855 (-9.88856 19.123)
Norm : 0.388091 (-0.18298 0.413908)
------------------------------------------------------------
# Chi-Squared = 63.39 using 59 PHA bins.
# Reduced chi-squared = 1.112 for 57 degrees of freedom
# Null hypothesis probability = 2.612234e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.815e-07 1.529e-07
25- 50 2.653e-07 1.616e-07
50-150 9.342e-08 8.373e-08
15-150 6.403e-07 3.919e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.19649 (-4.20055 -4.20055)
R1^2/D10^2 : 0.332144 (-0.328664 -0.328664)
kT2 [keV] : 8.44880 (-8.46941 -8.46941)
R2^2/D10^2 : 1.95285E-02 (-0.0192546 0.394173)
------------------------------------------------------------
# Chi-Squared = 62.91 using 59 PHA bins.
# Reduced chi-squared = 1.144 for 55 degrees of freedom
# Null hypothesis probability = 2.165172e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.769e-07 2.352e-07
25- 50 2.848e-07 1.848e-07
50-150 6.909e-08 4.571e-08
15-150 6.308e-07 4.955e-07
Plot creation:
Tue Jun 19 04:20:18 EDT 2012