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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
288.8282 +11.1470 0.0832 39.0 144.6 -2.2445 -2.3 TRIG_00567383
------------------------------------------
Foreground time interval of the image:
-85.872 250.116 (delta_t = 335.988 [sec])
Background time interval of the image:
-140.699 -85.872 (delta_t = 54.827 [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
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 384.000000
8 ms binning
From T100_start-3 s to T100_start+3 s
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 384.000000
2 ms binning
From T100_start-1 s to T100_start+1 s
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 384.000000
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
The mask-weighted light curves based on cleaned DPHs
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 -85.872 sec. to 250.116 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.03463 ( -0.342894 0.398978 )
Norm@50keV : 4.24753E-04 ( -0.000127244 0.000134572 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.93 using 59 PHA bins.
# Reduced chi-squared = 1.385 for 57 degrees of freedom
# Null hypothesis probability = 2.883002e-02
Photon flux (15-150 keV) in 336 sec: 0.119800 ( -0.0162717 0.0162784 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.74262e-06 ( -2.91712e-07 3.08781e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -85.872 sec. to 250.116 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.31311 ( )
Epeak [keV] : 12.0443 ( )
Norm@50keV : 6.54792E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.54 using 59 PHA bins.
# Reduced chi-squared = 1.367 for 56 degrees of freedom
# Null hypothesis probability = 3.550255e-02
Photon flux (15-150 keV) in 336 sec: 0.115993 ( -0.0164047 0.016534 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.57045e-06 ( -2.66015e-07 3.30822e-07 ) ergs/cm2
Band function
Time interval is from -85.872 sec. to 250.116 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.37305 ( 1.37305 1.37305 )
beta : -9.37167 ( 9.37167 19.3714 )
Epeak [keV] : 11.4761 ( -3.45103 11.7444 )
Norm@50keV : 5.89483E-03 ( -0.00589874 1.04592e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.54 using 59 PHA bins.
# Reduced chi-squared = 1.392 for 55 degrees of freedom
# Null hypothesis probability = 2.897645e-02
Photon flux (15-150 keV) in 336 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] : 5.67359 (-0.786507 0.888607)
R^2/D10^2 : 0.553537 (-0.265472 0.546056)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.27 using 59 PHA bins.
# Reduced chi-squared = 1.391 for 57 degrees of freedom
# Null hypothesis probability = 2.718772e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.308e-07 1.804e-07
25- 50 6.436e-07 1.856e-07
50-150 4.659e-08 2.855e-08
15-150 1.421e-06 3.473e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 18.5760 (-4.72776 6.70338)
Norm : 1.57911 (-0.493807 0.813001)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.55 using 59 PHA bins.
# Reduced chi-squared = 1.343 for 57 degrees of freedom
# Null hypothesis probability = 4.302778e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.709e-07 1.512e-07
25- 50 6.365e-07 1.494e-07
50-150 1.679e-07 9.957e-08
15-150 1.575e-06 2.942e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.46993 (-1.38447 3.48173)
R1^2/D10^2 : 944.839 ( )
kT2 [keV] : 6.37298 (-1.04324 6.29686)
R2^2/D10^2 : 0.302374 (-0.309611 0.154275)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.05 using 59 PHA bins.
#Fit statistic : Chi-Squared = 74.96 using 59 PHA bins.
# Reduced chi-squared = 1.364 for 55 degrees of freedom
# Reduced chi-squared = 1.363 for 55 degrees of freedom
# Null hypothesis probability = 3.749127e-02
# Null hypothesis probability = 3.803480e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.401e-07 3.620e-07
25- 50 6.757e-07 3.888e-07
50-150 8.257e-08 5.821e-08
15-150 1.498e-06 7.647e-07
Peak spectrum fit
Power-law model
Time interval is from 211.904 sec. to 212.904 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.02003 ( -0.785218 0.944581 )
Norm@50keV : 4.58582E-03 ( -0.00458581 0.00226836 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.09 using 59 PHA bins.
# Reduced chi-squared = 0.9315 for 57 degrees of freedom
# Null hypothesis probability = 6.223484e-01
Photon flux (15-150 keV) in 1 sec: 0.694285 ( -0.2752 0.275484 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.2338e-08 ( -1.96752e-08 2.12252e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 211.904 sec. to 212.904 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.07855 ( )
Epeak [keV] : 41.4885 ( )
Norm@50keV : 4.14240E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.05 using 59 PHA bins.
# Reduced chi-squared = 0.9473 for 56 degrees of freedom
# Null hypothesis probability = 5.873788e-01
Photon flux (15-150 keV) in 1 sec: 0.694925 ( -0.275268 0.274875 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.18416e-08 ( -4.18416e-08 2.13146e-08 ) ergs/cm2
Band function
Time interval is from 211.904 sec. to 212.904 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.89347 ( -4.89347 -4.89347 )
beta : -2.33093 ( 2.33093 1.00337 )
Epeak [keV] : 23.4939 ( -23.4939 72.392 )
Norm@50keV : 1018.05 ( -398.228 1.46743e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.71 using 59 PHA bins.
# Reduced chi-squared = 0.9584 for 55 degrees of freedom
# Null hypothesis probability = 5.625938e-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] : 6.87214 (-2.45161 5.81806)
R^2/D10^2 : 1.37737 (-1.37735 7.61651)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.01 using 59 PHA bins.
# Reduced chi-squared = 0.9650 for 57 degrees of freedom
# Null hypothesis probability = 5.502514e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.025e-08 6.530e-09
25- 50 1.354e-08 9.505e-09
50-150 2.098e-09 2.092e-09
15-150 2.588e-08 1.721e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 63.2674 (-63.4084 -63.4084)
Norm : 3.50821 (-1.80999 6.22373)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.63 using 59 PHA bins.
# Reduced chi-squared = 0.9408 for 57 degrees of freedom
# Null hypothesis probability = 6.024574e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.888e-09 5.800e-09
25- 50 1.374e-08 8.890e-09
50-150 1.633e-08 1.386e-08
15-150 3.896e-08 2.872e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.80159 (-1.53369 3.78662)
R1^2/D10^2 : 2.49144 (-2.19075 20.1286)
kT2 [keV] : 46.2465 (-46.2459 -46.246)
R2^2/D10^2 : 1.23098E-03 (-0.00121947 0.0262371)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.61 using 59 PHA bins.
# Reduced chi-squared = 0.9383 for 55 degrees of freedom
# Null hypothesis probability = 6.051207e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.091e-08 6.665e-09
25- 50 1.198e-08 7.050e-09
50-150 2.522e-08 1.571e-08
15-150 4.810e-08 2.493e-08
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: 3.03463 ( -0.342894 0.398978 )
Norm@50keV : 4.24753E-04 ( -0.000127244 0.000134572 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.93 using 59 PHA bins.
# Reduced chi-squared = 1.385 for 57 degrees of freedom
# Null hypothesis probability = 2.883002e-02
Photon flux (15-150 keV) in 336 sec: 0.119800 ( -0.0162717 0.0162784 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.74262e-06 ( -2.91712e-07 3.08781e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.31311 ( )
Epeak [keV] : 12.0443 ( )
Norm@50keV : 6.54792E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.54 using 59 PHA bins.
# Reduced chi-squared = 1.367 for 56 degrees of freedom
# Null hypothesis probability = 3.550255e-02
Photon flux (15-150 keV) in 336 sec: 0.115993 ( -0.0164047 0.016534 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.57045e-06 ( -2.66015e-07 3.30822e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.37305 ( 1.37305 1.37305 )
beta : -9.37167 ( 9.37167 19.3714 )
Epeak [keV] : 11.4761 ( -3.45103 11.7444 )
Norm@50keV : 5.89483E-03 ( -0.00589874 944328 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.54 using 59 PHA bins.
# Reduced chi-squared = 1.392 for 55 degrees of freedom
# Null hypothesis probability = 2.897645e-02
Photon flux (15-150 keV) in 336 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 5.79291e-07
S(50-100 keV) = 2.8279e-07
T90 vs. Hardness ratio plot
T90 = 157.007999956608 sec.
Hardness ratio (energy fluence ratio) = 0.488166
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.705621
Count Ratio (50-100 keV) / (15-25 keV) = 0.0872736
Mask shadow pattern
IMX = -6.609135934376330E-01, IMY = -4.702492938220685E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 384.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 384.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 384.000000
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:
-140.699410 -85.872000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.5344 35.4789 61.7 44.7 -155.2 0.0272 0.2 9.0 Her X-1
288.8100 10.9650 2.4 39.2 144.5 0.8435 4.9 1.4 GRS 1915+105
299.5399 35.2020 1.6 13.6 158.3 0.5475 7.4 2.5 Cyg X-1
308.0100 40.9525 2.1 4.9 154.5 0.4106 5.4 4.5 Cyg X-3
326.1137 38.3460 4.1 11.5 41.3 0.2234 2.8 3.1 Cyg X-2
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-85.872000 250.116000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.5920 35.3036 5.6 44.7 -155.5 1.8608 2.1 7.0 Her X-1
288.8297 11.0935 5.7 39.1 144.5 -1.9616 -2.0 9.1 GRS 1915+105
299.4428 35.3092 3.3 13.6 158.7 -1.5634 -3.6 9.7 Cyg X-1
308.3575 40.8656 4.3 4.7 151.1 1.1843 2.7 12.4 Cyg X-3
325.9982 38.1927 19.4 11.6 42.3 -0.2806 -0.6 11.3 Cyg X-2
275.0896 14.9191 2.4 43.4 164.7 4.6499 4.7 ------ UNKNOWN
257.3825 26.4794 1.9 47.6 -167.5 5.7583 6.2 ------ UNKNOWN
289.7896 65.2042 2.3 24.5 -98.2 2.8877 5.0 ------ UNKNOWN
243.7035 24.0012 1.8 58.9 -160.5 18.1939 6.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
564.400600 663.040500
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.0489 -60.5757 8.2 47.2 -131.4 -0.6538 -1.4 8.4 Cen X-3
186.9718 -62.8211 17.1 38.9 -130.6 -0.1344 -0.7 9.2 GX 301-2
244.9816 -15.6369 0.5 34.2 -11.8 3.1853 24.1 0.2 Sco X-1
256.1663 -37.7922 23.3 11.0 8.7 -0.0524 -0.5 9.1 4U 1700-377
256.4865 -36.3957 1.5 12.4 9.8 0.7885 7.6 3.0 GX 349+2
263.1221 -24.5788 0.0 24.9 23.0 -0.0599 -0.5 11.8 GX 1+4
264.5830 -44.6176 22.9 7.4 66.0 0.0526 0.5 12.2 4U 1735-44
268.3930 -1.4811 3.9 48.5 23.8 0.9938 3.0 2.3 SW J1753.5-0127
270.2203 -25.1041 2.2 26.2 37.7 0.7282 5.2 3.8 GX 5-1
270.2246 -25.6573 5.4 25.7 38.1 0.3014 2.2 6.6 GRS 1758-258
273.9813 -14.0550 6.9 37.8 36.5 0.3404 1.7 1.8 GX 17+2
276.0241 -30.1919 0.0 24.1 54.0 0.2428 1.9 11.7 H1820-303
285.1284 -24.7733 6.1 33.2 61.2 -0.3886 -1.9 10.2 HT1900.1-2455
262.9079 -33.6961 5.8 16.0 29.1 0.2145 2.0 9.2 GX 354-0
273.4825 -22.2500 2.0 30.0 41.1 0.9016 5.9 ------ UNKNOWN
255.7399 -48.7405 1.8 0.0 98.5 0.6668 6.4 ------ UNKNOWN
49.9857 -78.9706 2.9 51.4 -179.4 1.2174 3.9 ------ UNKNOWN
100.4982 -78.3196 3.6 52.1 -167.1 1.0269 3.2 ------ UNKNOWN
226.2041 -14.3954 2.4 42.0 -38.7 0.9423 4.9 ------ UNKNOWN
211.7973 -43.4207 2.7 30.5 -90.1 0.7290 4.2 ------ UNKNOWN
185.9552 -50.8423 3.1 43.3 -113.7 1.8149 3.8 ------ UNKNOWN
Plot creation:
Sun Aug 25 19:21:05 EDT 2013