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Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
199.7792 -35.6904 0.0628 14.7168 8.5585 0.5829020 3.069 TRIG_00597860
Foreground time interval of the image:
1.192 67.240 (delta_t = 66.048 [sec])
Background time interval of the image:
-13.299 1.192 (delta_t = 14.491 [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 64.000000
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 64.000000
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 64.000000
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 1.192 sec. to 67.240 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.24314 ( -0.527239 0.671837 )
Norm@50keV : 3.49360E-04 ( -0.000146828 0.000136768 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.46 using 59 PHA bins.
# Reduced chi-squared = 0.8853 for 57 degrees of freedom
# Null hypothesis probability = 7.171906e-01
Photon flux (15-150 keV) in 66.05 sec: 5.91814E-02 ( -0.0156466 0.0156466 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.18365e-07 ( -7.18023e-08 7.68551e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.192 sec. to 67.240 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.92748 ( )
Epeak [keV] : 9.58817 ( )
Norm@50keV : 5.32934E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.41 using 59 PHA bins.
# Reduced chi-squared = 0.9002 for 56 degrees of freedom
# Null hypothesis probability = 6.855417e-01
Photon flux (15-150 keV) in 66.05 sec: 5.86174E-02 ( -0.0161085 0.01598 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.13278e-07 ( -7.32184e-08 8.07157e-08 ) ergs/cm2
Band function
Time interval is from 1.192 sec. to 67.240 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.99749 ( -0.00254041 0.550134 )
beta : -9.37167 ( 9.37167 19.3717 )
Epeak [keV] : 0.417431 ( -0.417432 -0.417432 )
Norm@50keV : 4.87265E-04 ( -0.000128721 0.000128724 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.41 using 59 PHA bins.
# Reduced chi-squared = 0.9166 for 55 degrees of freedom
# Null hypothesis probability = 6.503574e-01
Photon flux (15-150 keV) in 66.05 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] : 9.84701 (-2.88904 3.53964)
R^2/D10^2 : 2.84583E-02 (-0.0284142 0.0803295)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.84 using 59 PHA bins.
# Reduced chi-squared = 0.9446 for 57 degrees of freedom
# Null hypothesis probability = 5.943180e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.692e-08 2.111e-08
25- 50 8.979e-08 5.380e-08
50-150 4.481e-08 3.203e-08
15-150 1.715e-07 9.832e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 48.7963 (-25.0842 80.0719)
Norm : 0.337962 (-0.129696 0.252286)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.62 using 59 PHA bins.
# Reduced chi-squared = 0.8881 for 57 degrees of freedom
# Null hypothesis probability = 7.115538e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.427e-08 2.210e-08
25- 50 7.727e-08 4.480e-08
50-150 7.330e-08 5.354e-08
15-150 2.048e-07 1.024e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.96983 (-1.94257 2.73138)
R1^2/D10^2 : 55.4080 (-67.713 -68.0406)
kT2 [keV] : 11.9904 (-3.63139 6.12875)
R2^2/D10^2 : 1.19246E-02 (-0.011197 0.0305297)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.94 using 59 PHA bins.
# Reduced chi-squared = 0.8717 for 55 degrees of freedom
# Null hypothesis probability = 7.388742e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.334e-08 2.569e-08
25- 50 7.604e-08 4.515e-08
50-150 6.506e-08 4.548e-08
15-150 1.944e-07 1.053e-07
Peak spectrum fit
Power-law model
Time interval is from 48.468 sec. to 49.468 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.72826 ( -0.950479 1.13785 )
Norm@50keV : 1.82309E-03 ( -0.00182309 0.000991139 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.04 using 59 PHA bins.
# Reduced chi-squared = 0.7376 for 57 degrees of freedom
# Null hypothesis probability = 9.308753e-01
Photon flux (15-150 keV) in 1 sec: 0.244566 ( -0.122817 0.123481 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.68449e-08 ( -9.36718e-09 1.01252e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 48.468 sec. to 49.468 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.78545E-02 ( 0.0611433 2.23109 )
Epeak [keV] : 50.3391 ( -33.9852 -49.6804 )
Norm@50keV : 1.59604E-02 ( -0.0210121 7542.82 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.78 using 59 PHA bins.
# Reduced chi-squared = 0.7461 for 56 degrees of freedom
# Null hypothesis probability = 9.211786e-01
Photon flux (15-150 keV) in 1 sec: 0.217253 ( -0.126007 0.143728 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.3623e-08 ( -8.17162e-09 1.27555e-08 ) ergs/cm2
Band function
Time interval is from 48.468 sec. to 49.468 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.67111 ( 0.867515 0.867515 )
beta : -2.88769 ( 3.09034 3.19983 )
Epeak [keV] : 44.3437 ( -30.5844 93.1822 )
Norm@50keV : 0.148028 ( -0.142921 11.5849 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.64 using 59 PHA bins.
# Reduced chi-squared = 0.7572 for 55 degrees of freedom
# Null hypothesis probability = 9.080906e-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] : 11.8830 (-4.74317 9.06926)
R^2/D10^2 : 6.39643E-02 (-0.0639644 0.345858)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.76 using 59 PHA bins.
# Reduced chi-squared = 0.7327 for 57 degrees of freedom
# Null hypothesis probability = 9.351023e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.909e-09 1.302e-09
25- 50 5.938e-09 3.905e-09
50-150 5.008e-09 4.066e-09
15-150 1.285e-08 8.780e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 118.226 (-115.049 -115.049)
Norm : 1.03842 (-0.552019 1.34613)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.95 using 59 PHA bins.
# Reduced chi-squared = 0.7359 for 57 degrees of freedom
# Null hypothesis probability = 9.323615e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.706e-09 1.779e-09
25- 50 4.829e-09 3.102e-09
50-150 8.555e-09 6.500e-09
15-150 1.609e-08 1.100e-08
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.76 using 59 PHA bins.
#Fit statistic : Chi-Squared = 38.74 using 59 PHA bins.
#Fit statistic : Chi-Squared = 38.52 using 59 PHA bins.
#Fit statistic : Chi-Squared = 38.48 using 59 PHA bins.
# Reduced chi-squared = 0.7593 for 55 degrees of freedom
# Reduced chi-squared = 0.7043 for 55 degrees of freedom
# Reduced chi-squared = 0.7003 for 55 degrees of freedom
# Reduced chi-squared = 0.6996 for 55 degrees of freedom
# Null hypothesis probability = 9.058623e-01
# Null hypothesis probability = 9.526990e-01
# Null hypothesis probability = 9.552752e-01
# Null hypothesis probability = 9.556861e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
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: 2.24314 ( -0.527239 0.671837 )
Norm@50keV : 3.49360E-04 ( -0.000146828 0.000136768 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.46 using 59 PHA bins.
# Reduced chi-squared = 0.8853 for 57 degrees of freedom
# Null hypothesis probability = 7.171906e-01
Photon flux (15-150 keV) in 66.05 sec: 5.91814E-02 ( -0.0156466 0.0156466 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.18365e-07 ( -7.18023e-08 7.68551e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.92748 ( )
Epeak [keV] : 9.58817 ( )
Norm@50keV : 5.32934E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.41 using 59 PHA bins.
# Reduced chi-squared = 0.9002 for 56 degrees of freedom
# Null hypothesis probability = 6.855417e-01
Photon flux (15-150 keV) in 66.05 sec: 5.86174E-02 ( -0.0161085 0.01598 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.13278e-07 ( -7.32184e-08 8.07157e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.99749 ( -0.00250769 0.47495 )
beta : -9.37167 ( 9.37167 19.3717 )
Epeak [keV] : 0.417431 ( -0.417432 -0.417432 )
Norm@50keV : 4.87265E-04 ( -0.000128721 0.000128724 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.41 using 59 PHA bins.
# Reduced chi-squared = 0.9166 for 55 degrees of freedom
# Null hypothesis probability = 6.503574e-01
Photon flux (15-150 keV) in 66.05 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) = 6.97726e-08
S(50-100 keV) = 5.89511e-08
T90 vs. Hardness ratio plot
T90 = 55.2960000038147 sec.
Hardness ratio (energy fluence ratio) = 0.844903
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.654843
Count Ratio (50-100 keV) / (15-25 keV) = 0.3327
Mask shadow pattern
IMX = 2.597334081602966E-01, IMY = -3.908875892045927E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
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:
-13.299400 1.192000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3132 -60.6200 230.6 33.5 -61.1 -0.0029 -0.1 0.2 Cen X-3
186.3808 -62.7159 7.5 27.3 -70.8 -0.0779 -1.5 8.3 GX 301-2
245.0409 -15.6392 0.8 35.8 129.5 1.4278 15.3 3.5 Sco X-1
256.1168 -37.8466 3.7 30.0 173.8 0.1430 3.1 6.2 4U 1700-377
256.5405 -36.4449 5.3 30.9 171.5 0.1031 2.2 5.2 GX 349+2
263.1344 -24.8464 3.7 41.6 159.2 0.2498 3.1 9.1 GX 1+4
264.6137 -44.6284 0.0 34.2 -170.5 -0.1099 -2.1 12.0 4U 1735-44
270.1159 -25.0869 4.0 46.6 164.8 0.2993 2.9 9.2 GX 5-1
270.3437 -25.7659 3.8 46.4 165.7 0.2992 3.0 2.6 GRS 1758-258
275.8757 -30.2754 7.3 48.0 174.5 -0.1505 -1.6 6.1 H1820-303
263.0195 -33.7608 4.4 36.8 171.1 0.1501 2.6 4.7 GX 354-0
158.8031 -22.7138 3.2 51.7 -8.5 0.3525 3.7 ------ UNKNOWN
290.9715 -52.8901 2.7 48.9 -151.7 0.3914 4.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
1.192000 67.240000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3544 -60.4157 10.6 33.4 -60.8 0.3012 1.1 12.5 Cen X-3
186.4307 -62.7836 9.1 27.3 -71.1 0.3193 1.3 6.3 GX 301-2
245.0016 -15.6412 4.8 35.8 129.5 -1.0540 -2.4 1.3 Sco X-1
256.0666 -37.8320 7.9 30.1 173.8 -0.3314 -1.5 3.9 4U 1700-377
256.4226 -36.4369 9.7 30.9 171.4 -0.2792 -1.2 1.0 GX 349+2
263.0361 -24.6225 5.1 41.7 158.8 0.8654 2.3 7.5 GX 1+4
264.5770 -44.5594 4.2 34.3 -170.7 0.6501 2.7 9.7 4U 1735-44
270.3272 -25.1794 5.7 46.8 165.0 0.9786 2.0 6.5 GX 5-1
270.2468 -25.7979 3.6 46.3 165.7 -1.4484 -3.2 4.5 GRS 1758-258
275.9977 -30.4284 4.0 48.1 174.7 -1.2630 -2.8 5.3 H1820-303
262.9879 -33.7742 4.7 36.8 171.1 -0.6654 -2.4 3.6 GX 354-0
170.6041 -5.0857 2.4 55.2 17.4 5.4388 4.7 ------ UNKNOWN
273.9656 -48.0920 1.9 39.8 -162.5 1.6719 6.2 ------ UNKNOWN
152.0638 -27.5409 2.7 53.8 -17.9 2.2553 4.2 ------ UNKNOWN
294.2117 -72.2465 2.1 46.6 -125.6 4.6254 5.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
122.100600 963.048300
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.2950 -60.5879 2.5 31.2 -108.7 3.1761 4.5 2.2 Cen X-3
186.6590 -62.7727 3.3 28.3 -123.9 2.1170 3.5 0.2 GX 301-2
255.9799 -37.8152 1.6 44.5 153.9 11.3330 7.3 1.8 4U 1700-377
256.3457 -36.2717 16.8 45.2 151.9 1.1686 0.7 10.1 GX 349+2
264.5313 -44.3848 5.1 49.1 164.8 -3.4073 -2.2 9.9 4U 1735-44
262.9411 -33.9336 19.7 51.1 151.3 1.7325 0.6 6.4 GX 354-0
181.2726 -2.8022 3.8 37.0 11.9 2.1765 3.0 ------ UNKNOWN
201.2964 -25.0853 3.1 10.6 51.5 1.6580 3.7 ------ UNKNOWN
151.8534 -2.0212 3.6 55.5 -20.4 5.8328 3.2 ------ UNKNOWN
161.7330 -39.8829 3.9 30.1 -66.1 2.0703 3.0 ------ UNKNOWN
295.7349 -72.7711 3.6 57.9 -156.8 11.6347 3.2 ------ UNKNOWN
188.2886 -86.4993 4.0 51.0 -135.6 8.3946 3.0 ------ UNKNOWN
Plot creation:
Wed May 7 10:10:01 EDT 2014