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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
266.0512 -28.6849 0.1049 16.4 25.5 0.4843 1.8 TRIG_00586363
------------------------------------------
Foreground time interval of the image:
-143.736 -113.381 (delta_t = 30.355 [sec])
-112.736 19.965 (delta_t = 132.701 [sec])
Background time interval of the image:
-239.736 -143.736 (delta_t = 96.000 [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 1.024000
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 1.024000
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 1.024000
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
Multiple GTIs in the spectrum
tstart tstop
-143.736000 -113.380600
-112.736000 907.264000
XSPEC12>exit
XSPEC: quit
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 1050 sec: 9.30200E-02 ( -0.00660758 0.00661246 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.99417e-06 ( -3.04177e-07 3.08084e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-143.736000 -113.380600
-112.736000 907.264000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.30537E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 282.32 using 59 PHA bins.
# Reduced chi-squared = 5.0414 for 56 degrees of freedom
# Null hypothesis probability = 6.188557e-32
Photon flux (15-150 keV) in 1050 sec: 8.64933E-02 ( -0.0069909 0.0069478 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.37836e-06 ( -2.76517e-07 2.85432e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-143.736000 -113.380600
-112.736000 907.264000
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 1050 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] : 5.15454 (-0.319838 0.344327)
R^2/D10^2 : 0.671243 (-0.185765 0.258103)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.20 using 59 PHA bins.
# Reduced chi-squared = 0.9509 for 57 degrees of freedom
# Null hypothesis probability = 5.807363e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.933e-06 1.911e-07
25- 50 1.360e-06 1.486e-07
50-150 6.394e-08 2.230e-08
15-150 3.357e-06 2.824e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 15.1519 (-1.85813 2.09657)
Norm : 1.62505 (-0.307205 0.375805)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.55 using 59 PHA bins.
# Reduced chi-squared = 1.080 for 57 degrees of freedom
# Null hypothesis probability = 3.166077e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.006e-06 1.943e-07
25- 50 1.381e-06 1.381e-07
50-150 2.483e-07 7.523e-08
15-150 3.635e-06 2.782e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.79624 (-4.82626 0.50619)
R1^2/D10^2 : 0.879015 (-0.283903 -0.839104)
kT2 [keV] : 11.7653 (-12.4937 -12.4937)
R2^2/D10^2 : 2.56098E-03 (-0.00161254 0.760687)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.94 using 59 PHA bins.
# Reduced chi-squared = 0.9444 for 55 degrees of freedom
# Null hypothesis probability = 5.922593e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.973e-06 5.082e-07
25- 50 1.357e-06 5.230e-07
50-150 2.353e-07 1.361e-07
15-150 3.565e-06 1.004e-06
Peak spectrum fit
Power-law model
Time interval is from 0.264 sec. to 1.264 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 1 sec: 0.961481 ( -0.176767 0.17711 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.47724e-08 ( -9.64465e-09 1.0147e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.264 sec. to 1.264 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -4.94321 ( 3.74671 3.03708 )
Epeak [keV] : 24.3398 ( -3.00215 2.90971 )
Norm@50keV : 1756.54 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.49 using 59 PHA bins.
# Reduced chi-squared = 0.8302 for 56 degrees of freedom
# Null hypothesis probability = 8.135064e-01
Photon flux (15-150 keV) in 1 sec: 0.967192 ( -0.170487 0.170688 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.76301e-08 ( -6.9248e-09 7.2614e-09 ) ergs/cm2
Band function
Time interval is from 0.264 sec. to 1.264 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
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] : 5.95033 (-0.793854 0.921846)
R^2/D10^2 : 4.09460 (-1.96121 3.68937)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.11 using 59 PHA bins.
# Reduced chi-squared = 0.8441 for 57 degrees of freedom
# Null hypothesis probability = 7.928843e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.903e-08 5.678e-09
25- 50 1.864e-08 5.720e-09
50-150 1.649e-09 1.019e-09
15-150 3.932e-08 1.181e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 21.2433 (-5.65002 8.50477)
Norm : 11.4319 (-3.7049 5.61723)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.44 using 59 PHA bins.
# Reduced chi-squared = 0.9551 for 57 degrees of freedom
# Null hypothesis probability = 5.717412e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.863e-08 4.965e-09
25- 50 1.707e-08 5.403e-09
50-150 5.648e-09 3.597e-09
15-150 4.135e-08 1.170e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.95046 (-5.95056 32.4049)
R1^2/D10^2 : 3.91059 (-3.91099 -3.91099)
kT2 [keV] : 5.95692 (-5.94794 -5.94794)
R2^2/D10^2 : 0.182852 (-0.183305 -0.183305)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.11 using 59 PHA bins.
# Reduced chi-squared = 0.8748 for 55 degrees of freedom
# Null hypothesis probability = 7.329430e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.903e-08 1.264e+00
25- 50 1.864e-08 9.690e+00
50-150 1.650e-09 2.008e+02
15-150 3.932e-08 2.861e+02
Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)
Power-law model
XSPEC12>exit
XSPEC: quit
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 163.1 sec: 8.78529E-02 ( -0.0129427 0.0129591 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.68606e-07 ( -1.20398e-07 1.26941e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -2.25410 ( -6.18978 2.28404 )
Epeak [keV] : 24.2750 ( -4.20464 3.85449 )
Norm@50keV : 1.34545 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.02 using 59 PHA bins.
# Reduced chi-squared = 1.250 for 56 degrees of freedom
# Null hypothesis probability = 9.850117e-02
Photon flux (15-150 keV) in 163.1 sec: 8.43754E-02 ( -0.0127754 0.0127923 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.53343e-07 ( -9.14094e-08 1.07028e-07 ) ergs/cm2
Band function
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 163.1 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) = 1.29199e-06
S(50-100 keV) = 5.3692e-07
T90 vs. Hardness ratio plot
T90 = 777 sec.
Hardness ratio (energy fluence ratio) = 0.415576
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.537273
Count Ratio (50-100 keV) / (15-25 keV) = 0.0454789
Mask shadow pattern
IMX = 2.657340828426120E-01, IMY = -1.268181373003355E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
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:
-239.736000 -143.736000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9786 -15.6542 0.8 28.1 83.0 3.4681 14.5 0.8 Sco X-1
254.3709 35.3210 13.9 52.7 159.9 0.6468 0.8 4.4 Her X-1
255.9768 -37.8343 64.1 28.7 30.7 0.0314 0.2 0.7 4U 1700-377
256.4927 -36.4158 4.9 27.3 31.9 0.4152 2.3 2.8 GX 349+2
263.0114 -24.7745 1.8 14.9 42.3 0.9649 6.4 1.7 GX 1+4
264.7841 -44.4525 5.1 31.4 12.7 0.3976 2.3 1.8 4U 1735-44
268.4156 -1.6019 4.3 13.6 155.7 0.3600 2.6 9.4 SW J1753.5-0127
270.2452 -25.0615 4.1 11.6 17.3 0.3980 2.8 2.4 GX 5-1
270.1759 -25.6601 154.1 12.2 16.6 0.0117 0.1 8.5 GRS 1758-258
273.9149 -13.9086 3.8 0.1 145.9 0.3917 3.1 9.3 GX 17+2
276.0181 -30.3941 7.3 16.5 -6.1 0.2255 1.6 5.1 H1820-303
285.1385 -25.0383 75.3 15.2 -41.8 0.0226 0.2 9.0 HT1900.1-2455
288.7960 10.9712 1.3 29.0 -148.8 1.4694 8.6 1.5 GRS 1915+105
299.7086 35.0295 5.6 54.8 -154.1 -1.1972 -2.1 11.8 Cyg X-1
262.8288 -33.6715 0.0 22.1 25.5 0.3670 2.4 12.6 GX 354-0
255.2053 0.7272 2.6 23.7 127.0 0.8444 4.4 ------ UNKNOWN
266.2181 -28.8123 2.3 16.5 24.8 0.7177 5.0 ------ UNKNOWN
299.4609 -44.4516 2.6 37.3 -30.3 0.9103 4.5 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-143.736000 -113.380600
-112.736000 19.964600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0723 -15.5679 5.5 28.0 83.2 0.9184 2.1 6.9 Sco X-1
254.3365 35.3547 5.8 52.8 159.9 -2.8692 -2.0 6.0 Her X-1
256.0056 -37.8460 4.4 28.7 30.6 0.8746 2.6 0.9 4U 1700-377
256.4672 -36.2799 6.2 27.2 32.1 -0.6202 -1.9 8.7 GX 349+2
262.9230 -24.8601 62.3 15.0 42.3 -0.0476 -0.2 8.3 GX 1+4
264.6059 -44.4513 6.0 31.5 13.0 -0.6036 -1.9 5.9 4U 1735-44
268.2767 -1.6017 6.2 13.7 155.1 -0.4575 -1.8 10.5 SW J1753.5-0127
270.3845 -25.2313 3.2 11.7 16.4 -0.8770 -3.7 10.6 GX 5-1
270.4294 -25.7313 5.2 12.2 15.5 0.6344 2.6 6.9 GRS 1758-258
274.1394 -14.0811 6.4 0.1 -68.4 0.4646 1.8 8.2 GX 17+2
276.0549 -30.3502 90.4 16.4 -6.2 -0.0328 -0.1 6.8 H1820-303
284.9158 -24.9565 4.8 15.0 -41.5 -0.5956 -2.4 6.9 HT1900.1-2455
288.8961 10.7955 7.5 28.9 -148.4 0.4715 1.5 10.7 GRS 1915+105
299.6075 35.1823 4.2 54.9 -154.3 2.5800 2.7 1.4 Cyg X-1
263.1507 -33.9799 3.9 22.2 24.4 0.8201 3.0 11.9 GX 354-0
230.9196 -37.2241 2.2 44.7 50.7 5.9441 5.2 ------ UNKNOWN
243.2491 -3.1731 2.2 32.2 106.9 2.7145 5.3 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
58.164600 962.365900
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9801 -15.6497 0.3 23.5 121.5 37.0982 37.6 0.6 Sco X-1
255.9803 -37.8323 0.7 12.4 42.7 13.6779 17.3 0.8 4U 1700-377
256.2428 -36.5590 6.3 11.4 46.6 1.4308 1.8 12.4 GX 349+2
263.0032 -24.7317 1.1 4.9 146.1 7.5313 10.2 0.9 GX 1+4
264.7718 -44.3946 13.3 15.7 6.0 0.6971 0.9 3.6 4U 1735-44
268.2741 -1.3328 4.6 27.5 -173.3 2.0542 2.5 9.1 SW J1753.5-0127
270.1742 -25.1368 10.9 5.1 -132.4 0.7502 1.1 6.9 GX 5-1
270.2088 -25.7872 5.4 4.6 -126.6 1.5674 2.2 5.7 GRS 1758-258
274.0431 -14.0386 2.1 16.4 -149.8 4.7571 5.6 2.2 GX 17+2
275.9462 -30.3181 2.6 8.6 -75.0 3.4078 4.4 3.1 H1820-303
284.9058 -25.0075 10.0 17.1 -96.1 -0.8993 -1.1 8.8 HT1900.1-2455
288.7657 10.9365 2.0 45.3 -145.8 11.1175 5.7 2.0 GRS 1915+105
262.9415 -33.7584 3.2 5.7 30.4 2.6268 3.6 5.2 GX 354-0
230.2952 -17.8195 3.0 34.6 102.6 6.5340 3.8 ------ UNKNOWN
249.9401 -69.6267 4.2 41.9 10.6 3.2920 2.8 ------ UNKNOWN
258.2960 17.8182 2.6 47.2 171.9 7.8503 4.5 ------ UNKNOWN
263.8589 -23.0916 2.6 6.0 161.3 2.9805 4.4 ------ UNKNOWN
266.1416 -28.7180 1.0 0.1 128.2 8.6312 11.2 ------ UNKNOWN
Plot creation:
Tue May 6 18:21:16 EDT 2014