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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
293.8241 +21.7621 0.0398 11.8 -67.9 0.1713 4.8 TRIG_00603488
------------------------------------------
Foreground time interval of the image:
-0.024 8.609 (delta_t = 8.633 [sec])
Background time interval of the image:
-239.892 -0.024 (delta_t = 239.868 [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)
Flight mask-tagged light curves
Caution: Mask-weight map is always using the same on-axis map
Quad-rate summed light curves (from T0-300 to T0+1000)
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 -0.024 sec. to 285.844 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.02328 ( -1.02326 3.12738 )
Norm@50keV : 7.32598E-05 ( -7.32595e-05 6.59611e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.98 using 59 PHA bins.
# Reduced chi-squared = 1.105 for 57 degrees of freedom
# Null hypothesis probability = 2.731073e-01
Photon flux (15-150 keV) in 285.9 sec: 8.44769E-03 ( -0.00844769 0.00790393 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.24741e-07 ( -2.04736e-07 2.22569e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.024 sec. to 285.844 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.334585 ( -0.305265 -0.305265 )
Epeak [keV] : 139.849 ( -120.313 -120.313 )
Norm@50keV : 1.46117E-04 ( -0.000202227 -0.000202227 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.92 using 59 PHA bins.
# Reduced chi-squared = 1.124 for 56 degrees of freedom
# Null hypothesis probability = 2.446078e-01
Photon flux (15-150 keV) in 285.9 sec: 7.99118E-03 ( -0.00799118 0.00823442 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.11252e-07 ( -2.11252e-07 2.33268e-07 ) ergs/cm2
Band function
Time interval is from -0.024 sec. to 285.844 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.27171 ( -1.02093 0.744573 )
beta : -2.21322 ( 9.37162 9.37162 )
Epeak [keV] : 79.0711 ( -249.72 -255.69 )
Norm@50keV : 7.39380E-04 ( -0.000589859 0.121302 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.92 using 59 PHA bins.
# Reduced chi-squared = 1.144 for 55 degrees of freedom
# Null hypothesis probability = 2.162464e-01
Photon flux (15-150 keV) in 285.9 sec: 8.12362E-03 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.16222e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 20.8588 (-20.9119 -20.9119)
R^2/D10^2 : 3.58245E-04 (-0.000355364 0.0350459)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.97 using 59 PHA bins.
# Reduced chi-squared = 1.105 for 57 degrees of freedom
# Null hypothesis probability = 2.734827e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.443e-09 6.590e-09
25- 50 4.322e-08 2.999e-08
50-150 1.401e-07 1.115e-07
15-150 1.917e-07 1.733e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.362 (-199.363 -199.363)
Norm : 3.48208E-02 (-0.0324547 0.0324545)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.27 using 59 PHA bins.
# Reduced chi-squared = 1.110 for 57 degrees of freedom
# Null hypothesis probability = 2.647758e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.479e-08 2.101e-08
25- 50 4.769e-08 4.107e-08
50-150 1.046e-07 8.590e-08
15-150 1.771e-07 1.426e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.08965 (-1.12571 -1.12571)
R1^2/D10^2 : 1443.82 (-809.596 1.44443e+08)
kT2 [keV] : 21.0433 (-16.2784 -21.8856)
R2^2/D10^2 : 3.43227E-04 (-0.000302272 0.0219105)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.79 using 59 PHA bins.
# Reduced chi-squared = 1.142 for 55 degrees of freedom
# Null hypothesis probability = 2.197768e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.155e-08 6.370e-09
25- 50 4.222e-08 3.031e-08
50-150 1.394e-07 1.153e-07
15-150 1.931e-07 1.492e-07
Peak spectrum fit
Power-law model
Time interval is from -0.250 sec. to 0.750 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.27117 ( -0.335847 0.384311 )
Norm@50keV : 5.16830E-03 ( -0.00141049 0.00138222 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 87.53 using 59 PHA bins.
# Reduced chi-squared = 1.536 for 57 degrees of freedom
# Null hypothesis probability = 5.768494e-03
Photon flux (15-150 keV) in 1 sec: 0.888944 ( -0.156423 0.156478 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.91368e-08 ( -1.08781e-08 1.14973e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.250 sec. to 0.750 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.951066 ( -4.6886 1.02042 )
Epeak [keV] : 27.8507 ( )
Norm@50keV : 3.63524E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 85.81 using 59 PHA bins.
# Reduced chi-squared = 1.532 for 56 degrees of freedom
# Null hypothesis probability = 6.354133e-03
Photon flux (15-150 keV) in 1 sec: 0.860200 ( -0.160412 0.16021 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.29307e-08 ( -1.16853e-08 1.37671e-08 ) ergs/cm2
Band function
Time interval is from -0.250 sec. to 0.750 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.80518 ( -9.41863 -2.80519 )
beta : -3.04119 ( -3.1472 0.783839 )
Epeak [keV] : 27.0412 ( -6.37112 7.39592 )
Norm@50keV : 19.0359 ( -19.0477 320.687 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 84.04 using 59 PHA bins.
# Reduced chi-squared = 1.528 for 55 degrees of freedom
# Null hypothesis probability = 7.077373e-03
Photon flux (15-150 keV) in 1 sec: 0.858520 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.42267e-08 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.46790 (-1.22771 1.52165)
R^2/D10^2 : 1.32334 (-0.701286 1.42382)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 87.21 using 59 PHA bins.
# Reduced chi-squared = 1.530 for 57 degrees of freedom
# Null hypothesis probability = 6.144204e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.262e-08 3.748e-09
25- 50 1.953e-08 6.010e-09
50-150 4.067e-09 2.336e-09
15-150 3.621e-08 1.143e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 39.7937 (-14.3832 27.9672)
Norm : 5.82865 (-1.65866 2.57226)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 85.88 using 59 PHA bins.
# Reduced chi-squared = 1.507 for 57 degrees of freedom
# Null hypothesis probability = 8.001595e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.336e-08 3.338e-09
25- 50 1.754e-08 4.375e-09
50-150 1.349e-08 7.292e-09
15-150 4.439e-08 1.186e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.30035 (-1.91112 1.73549)
R1^2/D10^2 : 2.23622 (-1.32642 4.7213)
kT2 [keV] : 21.7135 (-14.4069 -21.6851)
R2^2/D10^2 : 8.59822E-03 (-0.00862847 0.527074)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 83.91 using 59 PHA bins.
# Reduced chi-squared = 1.526 for 55 degrees of freedom
# Null hypothesis probability = 7.263526e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.336e-08 7.565e-09
25- 50 1.792e-08 1.033e-08
50-150 1.550e-08 9.885e-09
15-150 4.678e-08 2.471e-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: 1.88083 ( -1.26409 1.58068 )
Norm@50keV : 7.20019E-04 ( -0.000719359 0.000436055 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.60 using 59 PHA bins.
# Reduced chi-squared = 0.9755 for 57 degrees of freedom
# Null hypothesis probability = 5.275523e-01
Photon flux (15-150 keV) in 8.633 sec: 0.102499 ( -0.048251 0.0482506 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.7085e-08 ( -3.44396e-08 4.00466e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.88706 ( )
Epeak [keV] : 9999.34 ( )
Norm@50keV : 7.18481E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.61 using 59 PHA bins.
# Reduced chi-squared = 0.9930 for 56 degrees of freedom
# Null hypothesis probability = 4.897330e-01
Photon flux (15-150 keV) in 8.633 sec: 0.102050 ( -0.0481132 0.048174 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.53697e-08 ( -3.85373e-08 4.14856e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.41700 ( 1.42283 1.42283 )
beta : -1.84759 ( 1.8623 1.24271 )
Epeak [keV] : 19.6286 ( -14.3876 -14.3876 )
Norm@50keV : 1.90981E-03 ( -0.00204762 0.155064 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.61 using 59 PHA bins.
# Reduced chi-squared = 1.011 for 55 degrees of freedom
# Null hypothesis probability = 4.516824e-01
Photon flux (15-150 keV) in 8.633 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.94608e-06 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 4.23e-08
S(50-100 keV) = 8.32e-08
T90 vs. Hardness ratio plot
T90 = 121.991999924183 sec.
Hardness ratio (energy fluence ratio) = 1.9669
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 2.94859
Count Ratio (50-100 keV) / (15-25 keV) = 1.8244
Mask shadow pattern
IMX = 7.896353783915046E-02, IMY = 1.941840845580541E-01
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:
-239.892000 -0.024000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9799 -15.6521 1.6 50.9 148.0 8.7586 7.4 0.7 Sco X-1
254.3787 35.2390 27.7 39.6 -137.7 -0.1684 -0.4 7.3 Her X-1
268.3795 -1.4987 3.0 23.8 148.5 0.9098 3.8 2.9 SW J1753.5-0127
270.1404 -24.9124 0.0 40.2 115.5 -1.5541 -1.8 12.7 GX 5-1
270.1646 -25.6746 8.8 40.9 114.9 -1.2291 -1.3 8.5 GRS 1758-258
273.9101 -14.1747 6.9 29.1 119.6 0.5591 1.7 10.0 GX 17+2
285.1684 -25.0462 13.1 36.2 94.4 -0.5205 -0.9 10.4 HT1900.1-2455
288.7936 10.9552 0.5 0.0 -130.5 4.6390 21.7 0.6 GRS 1915+105
299.6096 35.2286 1.7 26.2 -70.9 2.0157 6.8 1.9 Cyg X-1
308.0057 41.0376 3.8 34.5 -65.2 1.2038 3.0 7.0 Cyg X-3
326.0071 38.2375 8.0 43.0 -47.0 0.7643 1.4 9.2 Cyg X-2
282.5032 0.5335 2.5 12.1 120.2 0.9733 4.5 ------ UNKNOWN
241.8395 17.4871 3.1 45.9 -167.4 1.5201 3.8 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.024000 8.608600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0094 -15.7659 5.5 50.9 147.9 -0.4229 -2.1 7.7 Sco X-1
254.3186 35.1591 4.6 39.6 -137.8 0.1391 2.5 12.9 Her X-1
268.3489 -1.3111 5.8 23.7 149.0 0.0800 2.0 8.6 SW J1753.5-0127
270.1523 -25.1269 8.6 40.4 115.3 -0.1698 -1.3 7.7 GX 5-1
270.4067 -25.7412 6.4 40.8 114.6 0.2358 1.8 5.6 GRS 1758-258
273.9874 -14.0963 4.9 29.0 119.5 0.1261 2.3 3.8 GX 17+2
285.1697 -24.9411 15.6 36.1 94.4 -0.0685 -0.7 7.4 HT1900.1-2455
288.8279 10.9571 216.2 0.0 -31.2 0.0017 0.1 1.9 GRS 1915+105
299.4783 35.2460 4.6 26.2 -71.1 -0.1123 -2.5 6.1 Cyg X-1
308.0587 41.1125 3.3 34.6 -65.3 0.2181 3.5 9.9 Cyg X-3
326.3543 38.3984 0.0 43.3 -47.1 0.0765 0.9 9.7 Cyg X-2
275.9985 27.2581 1.9 20.3 -125.9 0.2245 6.0 ------ UNKNOWN
309.7165 27.0831 2.0 25.4 -43.5 0.2155 5.7 ------ UNKNOWN
318.1287 26.4329 2.5 31.7 -34.6 0.1951 4.6 ------ UNKNOWN
307.4656 42.8023 2.0 35.8 -67.5 0.3885 5.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
44.508610 962.132300
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.6256 35.4907 8.3 36.6 -161.3 -1.5412 -1.4 12.1 Her X-1
268.3875 -1.5097 5.6 34.0 128.0 3.3758 2.0 3.6 SW J1753.5-0127
288.7942 10.9607 0.6 11.9 102.4 17.3984 18.7 0.9 GRS 1915+105
299.5698 35.1916 1.0 14.3 -82.1 10.2838 12.0 1.2 Cyg X-1
308.0842 40.9232 3.0 22.6 -72.6 4.4258 3.9 2.1 Cyg X-3
326.1993 38.3959 4.2 32.3 -50.0 3.1795 2.7 4.6 Cyg X-2
329.6788 -15.0670 3.5 51.0 31.4 15.5984 3.3 ------ UNKNOWN
269.4865 11.7066 2.8 25.3 148.4 4.3200 4.1 ------ UNKNOWN
343.2209 -2.1803 4.0 54.0 8.2 8.5231 2.9 ------ UNKNOWN
234.3657 16.8478 2.6 55.9 174.2 23.3613 4.4 ------ UNKNOWN
342.7493 22.6950 3.2 45.1 -22.6 5.5316 3.7 ------ UNKNOWN
226.9981 38.4101 3.2 58.8 -159.2 23.9353 3.6 ------ UNKNOWN
321.9059 55.4663 4.4 39.6 -77.0 8.5327 2.6 ------ UNKNOWN
Plot creation:
Sun Jul 6 02:45:32 EDT 2014