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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
161.5625 -60.6039 0.0326 41.2 -9.7 2.0144 5.9 TRIG_00614193
------------------------------------------
Foreground time interval of the image:
0.000 320.000 (delta_t = 320.000 [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 320.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.42121 ( -0.36181 0.418984 )
Norm@50keV : 3.23292E-04 ( -9.90092e-05 9.86449e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.91 using 59 PHA bins.
# Reduced chi-squared = 1.104 for 57 degrees of freedom
# Null hypothesis probability = 2.750109e-01
Photon flux (15-150 keV) in 320 sec: 6.05678E-02 ( -0.0119865 0.0119896 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.01407e-06 ( -2.41646e-07 2.54836e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 320.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.508659 ( -3.77904 1.64522 )
Epeak [keV] : 26.5992 ( -17.0488 9.82023 )
Norm@50keV : 5.60534E-03 ( -0.00668079 3.03902 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.57 using 59 PHA bins.
# Reduced chi-squared = 1.064 for 56 degrees of freedom
# Null hypothesis probability = 3.471914e-01
Photon flux (15-150 keV) in 320 sec: 5.89282E-02 ( -0.0118007 0.0118962 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.79862e-07 ( -2.1815e-07 2.63366e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 320.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.79048 ( -6.68133 -4.79048 )
beta : -3.10390 ( -1.38998 0.677548 )
Epeak [keV] : 24.1821 ( -4.45486 4.39567 )
Norm@50keV : 72.5849 ( -13.9001 733.633 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.33 using 59 PHA bins.
# Reduced chi-squared = 1.061 for 55 degrees of freedom
# Null hypothesis probability = 3.538642e-01
Photon flux (15-150 keV) in 320 sec: 5.93153E-02 ( 6.94068 -0.0122176 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.78272e-07 ( -8.76032e-07 -2.01498e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.19976 (-1.39024 1.73747)
R^2/D10^2 : 0.106352 (-0.0628034 0.15373)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.82 using 59 PHA bins.
# Reduced chi-squared = 1.067 for 57 degrees of freedom
# Null hypothesis probability = 3.399436e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.915e-07 1.144e-07
25- 50 4.214e-07 1.722e-07
50-150 7.723e-08 4.713e-08
15-150 7.901e-07 2.864e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 33.3081 (-11.8919 21.6098)
Norm : 0.457435 (-0.148268 0.238115)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.02 using 59 PHA bins.
# Reduced chi-squared = 1.053 for 57 degrees of freedom
# Null hypothesis probability = 3.667505e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.131e-07 8.646e-08
25- 50 3.781e-07 1.266e-07
50-150 2.365e-07 1.392e-07
15-150 9.277e-07 2.947e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 13.6593 ( )
R1^2/D10^2 : 3.64869E-03 (-0.0035241 0.0222645)
kT2 [keV] : 5.47431 (-5.52097 -5.52097)
R2^2/D10^2 : 0.243479 (-0.240022 -0.240022)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.84 using 59 PHA bins.
#Fit statistic : Chi-Squared = 58.73 using 59 PHA bins.
# Reduced chi-squared = 1.070 for 55 degrees of freedom
# Reduced chi-squared = 1.068 for 55 degrees of freedom
# Null hypothesis probability = 3.369713e-01
# Null hypothesis probability = 3.405618e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.099e-07 1.898e-07
25- 50 3.738e-07 2.114e-07
50-150 1.889e-07 1.207e-07
15-150 8.726e-07 4.915e-07
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 320.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.42121 ( -0.36181 0.418984 )
Norm@50keV : 3.23292E-04 ( -9.90092e-05 9.86449e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.91 using 59 PHA bins.
# Reduced chi-squared = 1.104 for 57 degrees of freedom
# Null hypothesis probability = 2.750109e-01
Photon flux (15-150 keV) in 320 sec: 6.05678E-02 ( -0.0119865 0.0119896 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.01407e-06 ( -2.41646e-07 2.54836e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 320.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.508659 ( -3.77904 1.64522 )
Epeak [keV] : 26.5992 ( -17.0488 9.82023 )
Norm@50keV : 5.60534E-03 ( -0.00668079 3.03902 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.57 using 59 PHA bins.
# Reduced chi-squared = 1.064 for 56 degrees of freedom
# Null hypothesis probability = 3.471914e-01
Photon flux (15-150 keV) in 320 sec: 5.89282E-02 ( -0.0118007 0.0118962 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.79862e-07 ( -2.1815e-07 2.63366e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 320.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.79048 ( -6.68133 -4.79048 )
beta : -3.10390 ( -1.38998 0.677548 )
Epeak [keV] : 24.1821 ( -4.45486 4.39567 )
Norm@50keV : 72.5849 ( -13.9001 733.633 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.33 using 59 PHA bins.
# Reduced chi-squared = 1.061 for 55 degrees of freedom
# Null hypothesis probability = 3.538642e-01
Photon flux (15-150 keV) in 320 sec: 5.93153E-02 ( 6.94068 -0.0122176 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.78272e-07 ( -8.76032e-07 -2.01498e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.19976 (-1.39024 1.73747)
R^2/D10^2 : 0.106352 (-0.0628034 0.15373)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.82 using 59 PHA bins.
# Reduced chi-squared = 1.067 for 57 degrees of freedom
# Null hypothesis probability = 3.399436e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.915e-07 1.056e-07
25- 50 4.214e-07 1.713e-07
50-150 7.723e-08 4.839e-08
15-150 7.901e-07 2.522e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 33.3081 (-11.8919 21.6098)
Norm : 0.457435 (-0.148268 0.238115)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.02 using 59 PHA bins.
# Reduced chi-squared = 1.053 for 57 degrees of freedom
# Null hypothesis probability = 3.667505e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.131e-07 8.522e-08
25- 50 3.781e-07 1.192e-07
50-150 2.365e-07 1.420e-07
15-150 9.277e-07 3.080e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 13.6593 ( )
R1^2/D10^2 : 3.64869E-03 (-0.0035241 0.0224799)
kT2 [keV] : 5.47431 (-5.52097 -5.52097)
R2^2/D10^2 : 0.243479 (-0.240022 -0.240022)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.84 using 59 PHA bins.
#Fit statistic : Chi-Squared = 58.73 using 59 PHA bins.
# Reduced chi-squared = 1.070 for 55 degrees of freedom
# Reduced chi-squared = 1.068 for 55 degrees of freedom
# Null hypothesis probability = 3.369713e-01
# Null hypothesis probability = 3.405618e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.099e-07 1.827e-07
25- 50 3.738e-07 2.211e-07
50-150 1.889e-07 1.161e-07
15-150 8.726e-07 4.763e-07
Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)
Power-law model
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.42121 ( -0.36181 0.418984 )
Norm@50keV : 3.23292E-04 ( -9.90092e-05 9.86449e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.91 using 59 PHA bins.
# Reduced chi-squared = 1.104 for 57 degrees of freedom
# Null hypothesis probability = 2.750109e-01
Photon flux (15-150 keV) in 320 sec: 6.05678E-02 ( -0.0119865 0.0119896 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.01407e-06 ( -2.41646e-07 2.54836e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.508659 ( -3.77904 1.64522 )
Epeak [keV] : 26.5992 ( -17.0488 9.82023 )
Norm@50keV : 5.60534E-03 ( -0.00668079 3.03902 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.57 using 59 PHA bins.
# Reduced chi-squared = 1.064 for 56 degrees of freedom
# Null hypothesis probability = 3.471914e-01
Photon flux (15-150 keV) in 320 sec: 5.89282E-02 ( -0.0118007 0.0118962 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.79862e-07 ( -2.1815e-07 2.63366e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.79048 ( -6.68133 -4.79048 )
beta : -3.10390 ( -1.38998 0.677548 )
Epeak [keV] : 24.1821 ( -4.45486 4.39567 )
Norm@50keV : 72.5849 ( -13.9001 733.633 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.33 using 59 PHA bins.
# Reduced chi-squared = 1.061 for 55 degrees of freedom
# Null hypothesis probability = 3.538642e-01
Photon flux (15-150 keV) in 320 sec: 5.93153E-02 ( 6.94068 -0.0122176 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.78272e-07 ( -8.76032e-07 -2.01498e-07 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 3.34e-07
S(50-100 keV) = 2.49e-07
T90 vs. Hardness ratio plot
T90 = 320 sec.
Hardness ratio (energy fluence ratio) = 0.745509
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.00522
Count Ratio (50-100 keV) / (15-25 keV) = 0.273982
Mask shadow pattern
IMX = 8.630541606744413E-01, IMY = 1.481883018077387E-01
TIME vs. PHA plot around the trigger time
TIME vs. DetID plot around the trigger time
100 us light curve (15-350 keV)
Spacecraft aspect plot
Bright source in the pre-burst/pre-slew/post-slew images
Pre-burst image of 15-350 keV band
Time interval of the image:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 320.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5153 -40.5417 1.0 18.5 16.1 2.6105 11.4 1.0 Vela X-1
170.0920 -60.6497 4.4 43.8 -14.6 0.9399 2.6 6.8 Cen X-3
186.6364 -62.7829 1.4 51.2 -19.0 4.5599 8.4 0.9 GX 301-2
93.4310 -63.0878 5.0 51.0 31.3 3.2496 2.3 ------ UNKNOWN
113.9181 -2.9282 2.1 31.5 131.0 1.9666 5.4 ------ UNKNOWN
133.4625 -8.8573 3.4 14.7 162.4 0.7399 3.4 ------ UNKNOWN
133.4849 2.0397 2.1 25.1 172.3 1.3528 5.4 ------ UNKNOWN
161.5623 -60.6039 2.0 41.2 -9.7 2.0128 5.9 ------ UNKNOWN
140.8838 23.5835 3.1 46.0 -171.7 1.5897 3.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
406.000600 492.230000
493.000000 713.230000
718.000000 963.155700
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.4917 -40.5536 1.0 25.7 -171.4 4.0388 11.4 1.7 Vela X-1
169.9144 -60.7011 0.0 4.0 -25.2 0.1284 0.4 12.7 Cen X-3
186.6704 -62.7681 0.5 12.0 -9.3 7.5937 22.4 0.4 GX 301-2
99.3238 -40.0086 2.8 42.7 148.8 3.5021 4.1 ------ UNKNOWN
265.0150 -49.4945 3.0 53.9 7.9 5.2333 3.9 ------ UNKNOWN
161.6320 -60.5355 1.6 0.0 -160.8 2.6070 7.0 ------ UNKNOWN
142.1413 -14.7159 2.9 48.0 -146.4 3.5424 3.9 ------ UNKNOWN
197.6448 -25.9048 4.1 42.4 -69.1 4.9311 2.8 ------ UNKNOWN
161.2501 -15.1892 2.5 45.4 -121.2 7.2066 4.5 ------ UNKNOWN
Plot creation:
Thu Oct 2 18:35:27 EDT 2014