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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
272.1683 -20.4323 0.0063 18.2 163.3 0.2251 30.6 TRIG_00607399
------------------------------------------
Foreground time interval of the image:
-0.080 0.152 (delta_t = 0.232 [sec])
Background time interval of the image:
-239.212 -0.080 (delta_t = 239.132 [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 0.064000
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 0.064000
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 0.064000
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 -0.080 sec. to 0.152 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.56669 ( -0.109634 0.115129 )
Norm@50keV : 4.09309E-02 ( -0.0033462 0.0032993 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.65 using 59 PHA bins.
# Reduced chi-squared = 1.099 for 57 degrees of freedom
# Null hypothesis probability = 2.826755e-01
Photon flux (15-150 keV) in 0.232 sec: 8.38083 ( -0.543003 0.543934 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.67626e-08 ( -6.28117e-09 6.29551e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.080 sec. to 0.152 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.26431 ( -0.638352 0.54857 )
Epeak [keV] : 23.9870 ( -13.6007 6.55512 )
Norm@50keV : 0.225736 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.35 using 59 PHA bins.
# Reduced chi-squared = 0.7563 for 56 degrees of freedom
# Null hypothesis probability = 9.111738e-01
Photon flux (15-150 keV) in 0.232 sec: 8.00428 ( -0.56413 0.56525 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.20374e-08 ( -6.61896e-09 6.6823e-09 ) ergs/cm2
Band function
Time interval is from -0.080 sec. to 0.152 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.22210 ( -0.347895 0.694609 )
beta : -4.19986 ( 4.22558 1.10439 )
Epeak [keV] : 24.3973 ( -13.0557 6.23146 )
Norm@50keV : 0.239844 ( -0.0733304 0.397531 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.09 using 59 PHA bins.
# Reduced chi-squared = 0.7653 for 55 degrees of freedom
# Null hypothesis probability = 8.993199e-01
Photon flux (15-150 keV) in 0.232 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 9.19704e-08 ( -9.19687e-08 -6.56722e-09 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.71848 (-0.571484 0.597877)
R^2/D10^2 : 6.25085 (-1.52161 2.04997)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.21 using 59 PHA bins.
# Reduced chi-squared = 1.372 for 57 degrees of freedom
# Null hypothesis probability = 3.263844e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.109e-08 2.108e-09
25- 50 4.263e-08 3.028e-09
50-150 1.474e-08 2.502e-09
15-150 7.846e-08 5.336e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 36.2573 (-4.3882 5.08002)
Norm : 57.4208 (-6.75547 7.77865)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.44 using 59 PHA bins.
# Reduced chi-squared = 0.7445 for 57 degrees of freedom
# Null hypothesis probability = 9.246757e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.952e-08 2.564e-09
25- 50 3.715e-08 2.216e-09
50-150 2.572e-08 4.171e-09
15-150 9.239e-08 6.183e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.19834 (-0.986266 1.19728)
R1^2/D10^2 : 78.5938 (-49.7355 196.819)
kT2 [keV] : 11.8823 (-1.50372 2.28185)
R2^2/D10^2 : 1.30265 (-0.78277 1.25403)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.20 using 59 PHA bins.
# Reduced chi-squared = 0.7673 for 55 degrees of freedom
# Null hypothesis probability = 8.971839e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.988e-08 1.109e-08
25- 50 3.668e-08 9.921e-09
50-150 2.379e-08 6.980e-09
15-150 9.035e-08 2.661e-08
Peak spectrum fit
Power-law model
Time interval is from -0.462 sec. to 0.538 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.40584 ( -0.157937 0.166996 )
Norm@50keV : 1.07973E-02 ( -0.00127782 0.00126159 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.18 using 59 PHA bins.
# Reduced chi-squared = 1.038 for 57 degrees of freedom
# Null hypothesis probability = 3.958830e-01
Photon flux (15-150 keV) in 1 sec: 2.00461 ( -0.168118 0.168226 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.05464e-07 ( -9.9477e-09 1.00879e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.462 sec. to 0.538 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.868936 ( -0.939807 0.792819 )
Epeak [keV] : 28.7131 ( -11.8571 5.75053 )
Norm@50keV : 8.94931E-02 ( -0.0894884 0.239538 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.53 using 59 PHA bins.
# Reduced chi-squared = 0.8309 for 56 degrees of freedom
# Null hypothesis probability = 8.123789e-01
Photon flux (15-150 keV) in 1 sec: 1.91161 ( -0.17295 0.17332 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.5719e-08 ( -9.6809e-09 1.0278e-08 ) ergs/cm2
Band function
Time interval is from -0.462 sec. to 0.538 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.869477 ( -0.624944 1.16098 )
beta : -10.0000 ( 10 20 )
Epeak [keV] : 28.7047 ( -11.8445 5.751 )
Norm@50keV : 8.94216E-02 ( -0.0894216 0.239936 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.53 using 59 PHA bins.
# Reduced chi-squared = 0.8461 for 55 degrees of freedom
# Null hypothesis probability = 7.847801e-01
Photon flux (15-150 keV) in 1 sec: 1.91975 ( 5.08025 -0.17951 ) 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] : 8.70742 (-0.743609 0.790135)
R^2/D10^2 : 1.56203 (-0.46836 0.686043)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.17 using 59 PHA bins.
# Reduced chi-squared = 1.073 for 57 degrees of freedom
# Null hypothesis probability = 3.285392e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.264e-08 3.140e-09
25- 50 4.567e-08 4.755e-09
50-150 1.573e-08 3.915e-09
15-150 8.405e-08 8.275e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 38.1328 (-6.47612 8.28316)
Norm : 13.4383 (-2.01804 2.41978)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.47 using 59 PHA bins.
# Reduced chi-squared = 0.8327 for 57 degrees of freedom
# Null hypothesis probability = 8.118661e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.035e-08 3.435e-09
25- 50 3.909e-08 3.345e-09
50-150 2.868e-08 7.380e-09
15-150 9.812e-08 9.825e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.73961 (-1.27538 1.60205)
R1^2/D10^2 : 26.8807 (-20.6039 83.8966)
kT2 [keV] : 11.0350 (-1.55234 2.44571)
R2^2/D10^2 : 0.483835 (-0.309784 0.510748)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.50 using 59 PHA bins.
# Reduced chi-squared = 0.8090 for 55 degrees of freedom
# Null hypothesis probability = 8.434185e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.979e-08 1.327e-08
25- 50 4.016e-08 1.590e-08
50-150 2.416e-08 1.075e-08
15-150 9.411e-08 4.042e-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: 2.56669 ( -0.109634 0.115129 )
Norm@50keV : 4.09309E-02 ( -0.0033462 0.0032993 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.65 using 59 PHA bins.
# Reduced chi-squared = 1.099 for 57 degrees of freedom
# Null hypothesis probability = 2.826755e-01
Photon flux (15-150 keV) in 0.232 sec: 8.38083 ( -0.543003 0.543934 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.67626e-08 ( -6.28117e-09 6.29551e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.26431 ( -0.638352 0.54857 )
Epeak [keV] : 23.9870 ( -13.6007 6.55512 )
Norm@50keV : 0.225736 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.35 using 59 PHA bins.
# Reduced chi-squared = 0.7563 for 56 degrees of freedom
# Null hypothesis probability = 9.111738e-01
Photon flux (15-150 keV) in 0.232 sec: 8.00428 ( -0.56413 0.56525 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.20374e-08 ( -6.61896e-09 6.6823e-09 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.22210 ( -0.347895 0.694609 )
beta : -4.19986 ( 4.22558 1.10439 )
Epeak [keV] : 24.3973 ( -13.0557 6.23146 )
Norm@50keV : 0.239844 ( -0.0733304 0.397531 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.09 using 59 PHA bins.
# Reduced chi-squared = 0.7653 for 55 degrees of freedom
# Null hypothesis probability = 8.993199e-01
Photon flux (15-150 keV) in 0.232 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 9.19704e-08 ( -9.19687e-08 -6.56722e-09 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 3.23e-08
S(50-100 keV) = 2.18e-08
T90 vs. Hardness ratio plot
T90 = 0.159999966621399 sec.
Hardness ratio (energy fluence ratio) = 0.674923
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.862691
Count Ratio (50-100 keV) / (15-25 keV) = 0.277308
Mask shadow pattern
IMX = -3.140791876786495E-01, IMY = -9.436099049785705E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
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:
-239.212000 -0.080000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9869 -15.6442 0.4 37.3 -155.1 7.1684 25.8 0.5 Sco X-1
255.9312 -37.8638 2.7 40.5 166.2 1.4966 4.3 2.9 4U 1700-377
256.4355 -36.3985 3.1 39.1 167.2 1.1905 3.7 1.5 GX 349+2
263.0060 -24.7177 22.0 26.7 174.2 0.1145 0.5 1.7 GX 1+4
264.6268 -44.5693 16.8 42.6 152.4 0.3192 0.7 8.7 4U 1735-44
268.2019 -1.4912 6.6 13.4 -122.2 0.3205 1.8 10.2 SW J1753.5-0127
270.2111 -25.0577 2.5 23.1 161.2 0.9012 4.6 4.2 GX 5-1
270.4021 -25.7792 6.1 23.6 159.9 0.3869 1.9 5.8 GRS 1758-258
274.0572 -14.0617 3.7 11.9 171.3 0.5954 3.1 3.4 GX 17+2
275.8981 -30.3355 4.7 26.2 145.4 0.5931 2.5 2.3 H1820-303
285.0302 -24.7212 0.0 20.5 125.1 0.3456 1.6 12.0 HT1900.1-2455
288.7826 10.9250 1.1 17.2 -19.5 1.8688 10.3 1.5 GRS 1915+105
299.6848 35.2683 9.3 43.4 -23.1 0.4246 1.2 6.1 Cyg X-1
308.1784 40.9036 2.7 51.7 -19.3 2.1468 4.3 4.3 Cyg X-3
262.7471 -33.8215 10.5 33.9 163.1 -0.3127 -1.1 12.1 GX 354-0
319.8251 -20.0096 2.9 40.5 70.6 3.1290 4.0 ------ UNKNOWN
330.8078 3.0229 3.9 50.1 37.0 3.2831 3.0 ------ UNKNOWN
315.9158 11.1385 2.5 37.9 20.1 1.3934 4.6 ------ UNKNOWN
252.8697 -12.0971 3.0 29.1 -151.9 0.8191 3.9 ------ UNKNOWN
279.2802 18.6721 2.5 23.3 -49.9 0.9545 4.6 ------ UNKNOWN
239.5969 9.4706 2.9 43.8 -116.4 3.7191 4.0 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.080000 0.152000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8484 -15.7125 6.8 37.5 -155.2 0.0173 1.7 8.7 Sco X-1
255.7920 -37.8890 6.8 40.6 166.3 -0.0203 -1.7 9.6 4U 1700-377
256.3200 -36.4094 11.9 39.2 167.3 0.0115 1.0 5.6 GX 349+2
263.1287 -24.6421 29.0 26.6 174.1 -0.0034 -0.4 9.0 GX 1+4
264.8861 -44.3508 4.9 42.3 152.3 -0.0386 -2.3 8.6 4U 1735-44
268.4351 -1.5637 13.7 13.2 -122.3 -0.0060 -0.8 7.8 SW J1753.5-0127
270.2729 -24.9111 24.1 22.9 161.3 0.0038 0.5 10.1 GX 5-1
270.1174 -25.7022 28.6 23.7 160.6 -0.0033 -0.4 10.3 GRS 1758-258
273.8822 -13.9478 4.9 11.9 172.3 -0.0168 -2.4 8.9 GX 17+2
275.6787 -30.3637 0.0 26.3 145.8 0.0009 0.1 12.8 H1820-303
285.2699 -24.9196 0.0 20.7 124.6 -0.0128 -1.4 12.7 HT1900.1-2455
288.9336 11.0240 8.8 17.4 -19.2 0.0096 1.3 9.3 GRS 1915+105
299.5353 35.1727 10.5 43.3 -23.2 -0.0134 -1.1 3.2 Cyg X-1
308.0550 40.8871 14.1 51.7 -19.4 -0.0161 -0.8 4.7 Cyg X-3
263.0266 -33.9679 8.1 33.9 162.6 0.0136 1.4 8.2 GX 354-0
272.1683 -20.4322 0.4 18.2 163.3 0.2251 30.6 ------ UNKNOWN
312.5322 47.3981 2.4 58.8 -20.9 0.2146 4.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
70.888600 962.838000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9926 -15.6421 0.3 26.2 -87.4 29.1637 34.7 0.8 Sco X-1
254.3371 35.3273 7.9 58.2 -20.4 -5.4258 -1.5 6.0 Her X-1
255.9747 -37.8575 0.6 22.4 -148.1 12.2623 18.9 1.0 4U 1700-377
256.6039 -36.4700 4.4 21.0 -146.5 1.7679 2.6 8.6 GX 349+2
263.1292 -24.6097 5.1 9.3 -121.8 1.2920 2.3 10.5 GX 1+4
264.5443 -44.4874 7.5 24.9 -170.4 0.9523 1.5 8.8 4U 1735-44
268.3632 -1.5398 3.8 19.2 -15.0 1.7924 3.0 5.2 SW J1753.5-0127
270.3030 -25.0370 2.1 4.9 -163.5 3.4039 5.4 2.7 GX 5-1
270.3138 -25.7686 2.3 5.6 -166.2 3.1885 5.0 1.6 GRS 1758-258
274.0494 -14.1886 24.1 6.5 13.1 -0.2755 -0.5 9.5 GX 17+2
275.8951 -30.3267 4.1 10.5 158.6 1.6194 2.8 2.9 H1820-303
284.8987 -25.0285 12.2 12.6 110.5 0.6468 1.0 9.9 HT1900.1-2455
288.8009 10.9546 1.6 35.4 25.7 6.4061 7.2 0.6 GRS 1915+105
262.9441 -33.8369 6.7 15.7 -154.0 1.1151 1.7 2.2 GX 354-0
293.0343 12.3564 2.9 38.7 30.5 4.8012 3.9 ------ UNKNOWN
278.6257 35.9382 3.2 56.7 2.9 11.1388 3.6 ------ UNKNOWN
270.2329 -55.5344 2.2 35.2 178.5 4.3078 5.3 ------ UNKNOWN
272.2584 24.7241 2.6 45.1 -3.2 5.2813 4.5 ------ UNKNOWN
271.4067 14.6411 4.2 35.1 -4.6 2.3321 2.8 ------ UNKNOWN
243.0679 -59.3513 2.1 44.1 -162.5 6.5091 5.4 ------ UNKNOWN
255.2358 32.2841 2.3 55.1 -20.8 11.3218 5.0 ------ UNKNOWN
UNKNOWN
Plot creation:
Sat Aug 23 21:12:21 EDT 2014