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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
266.4041 -29.0170 0.0153 3.2 17.4 0.0248 12.5 TRIG_00565443
------------------------------------------
Foreground time interval of the image:
0.000 0.008 (delta_t = 0.008 [sec])
Background time interval of the image:
-515.651 -421.203 (delta_t = 94.448 [sec])
-239.752 -8.752 (delta_t = 231.000 [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 0.008000
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 0.008000
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 0.008000
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 0.000 sec. to 0.008 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.46022 ( -0.245459 0.268813 )
Norm@50keV : 0.116033 ( -0.0239752 0.0235563 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.76 using 59 PHA bins.
# Reduced chi-squared = 1.119 for 57 degrees of freedom
# Null hypothesis probability = 2.510494e-01
Photon flux (15-150 keV) in 0.008 sec: 22.2491 ( -3.58527 3.58897 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.18776e-09 ( -1.57139e-09 1.58678e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.92492 ( -2.42048 1.74204 )
Epeak [keV] : 35.2127 ( -4.17547 3.75421 )
Norm@50keV : 48.8760 ( -64.073 1480.41 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.92 using 59 PHA bins.
# Reduced chi-squared = 0.7486 for 56 degrees of freedom
# Null hypothesis probability = 9.188082e-01
Photon flux (15-150 keV) in 0.008 sec: 22.3672 ( -3.5764 3.5932 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.09792e-09 ( -1.38178e-09 1.39432e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.46800 ( -2.15918 2.02656 )
beta : -8.73612 ( 8.46569 18.4058 )
Epeak [keV] : 35.7615 ( -3.68008 3.34826 )
Norm@50keV : 98.5970 ( -98.5968 1134.32 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.96 using 59 PHA bins.
# Reduced chi-squared = 0.7630 for 55 degrees of freedom
# Null hypothesis probability = 9.019312e-01
Photon flux (15-150 keV) in 0.008 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] : 9.00140 (-0.923371 0.965428)
R^2/D10^2 : 18.4397 (-6.62127 10.3205)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.89 using 59 PHA bins.
# Reduced chi-squared = 0.7349 for 57 degrees of freedom
# Null hypothesis probability = 9.332035e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.327e-09 5.644e-10
25- 50 4.948e-09 8.968e-10
50-150 1.888e-09 6.264e-10
15-150 9.164e-09 1.574e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 35.3718 (-7.72699 10.6353)
Norm : 168.865 (-39.453 48.2929)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.27 using 59 PHA bins.
# Reduced chi-squared = 0.9346 for 57 degrees of freedom
# Null hypothesis probability = 6.156886e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.964e-09 5.352e-10
25- 50 3.687e-09 6.192e-10
50-150 2.480e-09 9.328e-10
15-150 9.131e-09 1.792e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.14197E-02 (0.822496 -0.0414197)
R1^2/D10^2 : 2.23729E+14 (-2.23729e+14 -2.23729e+14)
kT2 [keV] : 9.00150 (-0.923462 0.965338)
R2^2/D10^2 : 18.4389 (-6.62049 10.3213)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.89 using 59 PHA bins.
# Reduced chi-squared = 0.7616 for 55 degrees of freedom
# Null hypothesis probability = 9.033654e-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
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.46022 ( -0.245459 0.268813 )
Norm@50keV : 0.116033 ( -0.0239752 0.0235563 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.76 using 59 PHA bins.
# Reduced chi-squared = 1.119 for 57 degrees of freedom
# Null hypothesis probability = 2.510494e-01
Photon flux (15-150 keV) in 0.008 sec: 22.2491 ( -3.58527 3.58897 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.18776e-09 ( -1.57139e-09 1.58678e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.92492 ( -2.42048 1.74204 )
Epeak [keV] : 35.2127 ( -4.17547 3.75421 )
Norm@50keV : 48.8760 ( -64.073 1480.41 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.92 using 59 PHA bins.
# Reduced chi-squared = 0.7486 for 56 degrees of freedom
# Null hypothesis probability = 9.188082e-01
Photon flux (15-150 keV) in 0.008 sec: 22.3672 ( -3.5764 3.5932 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.09792e-09 ( -1.38178e-09 1.39432e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.46800 ( -2.15918 2.02656 )
beta : -8.73612 ( 8.46569 18.4058 )
Epeak [keV] : 35.7615 ( -3.68008 3.34826 )
Norm@50keV : 98.5970 ( -98.5968 1134.32 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.96 using 59 PHA bins.
# Reduced chi-squared = 0.7630 for 55 degrees of freedom
# Null hypothesis probability = 9.019312e-01
Photon flux (15-150 keV) in 0.008 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] : 9.00140 (-0.923371 0.965428)
R^2/D10^2 : 18.4397 (-6.62127 10.3205)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.89 using 59 PHA bins.
# Reduced chi-squared = 0.7349 for 57 degrees of freedom
# Null hypothesis probability = 9.332035e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.327e-09 5.740e-10
25- 50 4.948e-09 8.668e-10
50-150 1.888e-09 6.500e-10
15-150 9.164e-09 1.770e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 35.3718 (-7.72699 10.6353)
Norm : 168.865 (-39.453 48.2929)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.27 using 59 PHA bins.
# Reduced chi-squared = 0.9346 for 57 degrees of freedom
# Null hypothesis probability = 6.156886e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.964e-09 5.488e-10
25- 50 3.687e-09 6.268e-10
50-150 2.480e-09 9.612e-10
15-150 9.131e-09 1.645e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.14197E-02 (0.822496 -0.0414197)
R1^2/D10^2 : 2.23729E+14 (-2.23729e+14 -2.23729e+14)
kT2 [keV] : 9.00150 (-0.923462 0.965338)
R2^2/D10^2 : 18.4389 (-6.62049 10.3213)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.89 using 59 PHA bins.
# Reduced chi-squared = 0.7616 for 55 degrees of freedom
# Null hypothesis probability = 9.033654e-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: 2.46022 ( -0.245459 0.268813 )
Norm@50keV : 0.116033 ( -0.0239752 0.0235563 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.76 using 59 PHA bins.
# Reduced chi-squared = 1.119 for 57 degrees of freedom
# Null hypothesis probability = 2.510494e-01
Photon flux (15-150 keV) in 0.008 sec: 22.2491 ( -3.58527 3.58897 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.18776e-09 ( -1.57139e-09 1.58678e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.92492 ( -2.42048 1.74204 )
Epeak [keV] : 35.2127 ( -4.17547 3.75421 )
Norm@50keV : 48.8760 ( -64.073 1480.41 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.92 using 59 PHA bins.
# Reduced chi-squared = 0.7486 for 56 degrees of freedom
# Null hypothesis probability = 9.188082e-01
Photon flux (15-150 keV) in 0.008 sec: 22.3672 ( -3.5764 3.5932 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.09792e-09 ( -1.38178e-09 1.39432e-09 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.46800 ( -2.15918 2.02656 )
beta : -8.73612 ( 8.46569 18.4058 )
Epeak [keV] : 35.7615 ( -3.68008 3.34826 )
Norm@50keV : 98.5970 ( -98.5968 1134.32 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.96 using 59 PHA bins.
# Reduced chi-squared = 0.7630 for 55 degrees of freedom
# Null hypothesis probability = 9.019312e-01
Photon flux (15-150 keV) in 0.008 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) = 3.03557e-09
S(50-100 keV) = 2.2073e-09
T90 vs. Hardness ratio plot
T90 = 0.00800001621246338 sec.
Hardness ratio (energy fluence ratio) = 0.727145
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.45746
Count Ratio (50-100 keV) / (15-25 keV) = 0.512198
Mask shadow pattern
IMX = 5.314240913967688E-02, IMY = -1.666193033621576E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000
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:
-515.651400 -421.203000
-239.752000 -8.752000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9884 -15.6336 0.3 25.6 -35.7 8.2253 33.5 0.6 Sco X-1
256.1929 -37.8821 5.3 10.2 -107.7 0.4971 2.2 10.0 4U 1700-377
256.2688 -36.5075 7.1 9.5 -100.8 0.3601 1.6 9.5 GX 349+2
263.0747 -24.7035 2.0 8.1 -3.7 1.4934 5.8 4.4 GX 1+4
264.6567 -44.3877 7.1 12.3 -154.7 0.3943 1.6 5.3 4U 1735-44
268.4799 -1.3778 6.2 30.9 22.9 -0.5420 -1.8 8.1 SW J1753.5-0127
270.3550 -25.0304 2.4 7.9 45.2 1.0890 4.8 4.8 GX 5-1
270.2756 -25.8029 3.2 7.2 47.2 0.8320 3.6 3.9 GRS 1758-258
273.9422 -14.0551 3.5 19.4 41.3 0.7820 3.3 3.9 GX 17+2
275.9474 -30.5210 3.0 8.2 99.8 0.8400 3.8 9.3 H1820-303
285.1081 -24.7242 0.0 17.9 89.2 0.4494 1.6 12.4 HT1900.1-2455
262.8292 -33.7189 7.0 3.4 -98.1 0.3767 1.7 10.6 GX 354-0
250.1422 20.8138 2.7 55.3 0.4 3.8103 4.3 ------ UNKNOWN
266.5684 -32.2448 1.2 0.1 148.5 2.1864 9.4 ------ UNKNOWN
221.5751 -9.9612 2.9 47.0 -53.0 4.7478 3.9 ------ UNKNOWN
222.4360 -2.5863 2.8 50.8 -44.6 5.4259 4.1 ------ UNKNOWN
212.0746 -52.9560 3.3 43.8 -115.9 3.8133 3.5 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.008000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9580 -15.7643 4.4 25.6 -36.0 0.0063 2.6 7.5 Sco X-1
255.7968 -37.8612 8.7 10.4 -106.8 0.0027 1.3 9.0 4U 1700-377
256.3926 -36.5687 7.5 9.4 -101.3 -0.0031 -1.5 9.0 GX 349+2
262.9233 -24.7806 124.6 8.1 -4.8 0.0002 0.1 5.1 GX 1+4
264.7018 -44.5653 8.3 12.4 -155.0 0.0029 1.4 7.1 4U 1735-44
268.5531 -1.5506 0.0 30.7 23.1 0.0053 1.9 12.6 SW J1753.5-0127
270.1362 -25.1425 9.6 7.7 44.2 0.0027 1.2 8.9 GX 5-1
270.3290 -25.5745 86.2 7.4 46.8 -0.0003 -0.1 10.2 GRS 1758-258
273.8097 -13.9509 94.8 19.4 40.8 0.0003 0.1 12.5 GX 17+2
275.8127 -30.5189 5.0 8.1 99.5 0.0050 2.3 10.8 H1820-303
285.2353 -24.9860 6.3 17.9 90.1 0.0045 1.8 11.5 HT1900.1-2455
263.1586 -33.9207 7.6 3.3 -103.3 0.0031 1.5 9.9 GX 354-0
267.6779 15.2717 2.5 47.5 20.6 0.0275 4.5 ------ UNKNOWN
266.4040 -29.0170 0.9 3.2 17.4 0.0248 12.5 ------ UNKNOWN
272.1150 -63.0564 2.6 31.1 -165.9 0.0113 4.5 ------ UNKNOWN
243.0367 -78.9577 1.9 47.8 -155.0 0.0279 6.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
41.948600 962.337800
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9829 -15.6268 0.3 23.8 -56.4 22.6866 33.7 0.8 Sco X-1
255.9957 -37.8617 1.6 12.4 -134.2 3.9699 7.0 1.1 4U 1700-377
256.3707 -36.4283 2.1 11.3 -129.8 2.9281 5.4 3.1 GX 349+2
262.9682 -24.7552 2.2 5.2 -32.7 2.7647 5.3 2.3 GX 1+4
264.5404 -44.4402 9.8 15.5 -170.8 0.5898 1.2 8.7 4U 1735-44
268.4375 -1.4042 9.1 27.7 8.5 0.6904 1.3 5.1 SW J1753.5-0127
270.2588 -25.0494 1.4 5.2 46.0 4.3320 8.3 2.3 GX 5-1
270.2947 -25.8660 3.2 4.6 52.8 1.9074 3.6 7.4 GRS 1758-258
274.0304 -14.0384 2.0 16.5 31.0 2.8055 5.8 1.4 GX 17+2
275.8862 -30.3880 3.0 8.3 106.1 1.8446 3.8 2.4 H1820-303
285.0306 -24.9426 4.2 17.0 84.8 1.7575 2.7 1.4 HT1900.1-2455
288.8116 10.9410 1.4 45.4 35.8 12.5968 8.4 0.8 GRS 1915+105
262.8490 -33.8128 3.4 5.7 -144.4 1.7502 3.4 7.1 GX 354-0
285.7201 -11.7426 2.5 24.9 54.3 2.8972 4.7 ------ UNKNOWN
277.3903 -23.8103 1.9 11.1 68.9 2.9732 6.1 ------ UNKNOWN
266.5422 -32.2288 1.2 3.2 -177.6 5.4031 9.9 ------ UNKNOWN
247.7336 18.8577 2.6 51.1 -18.8 4.7546 4.5 ------ UNKNOWN
228.3563 0.9408 5.7 47.1 -53.1 5.8899 2.1 ------ UNKNOWN
212.0322 -44.5587 2.5 45.3 -121.3 11.8079 4.7 ------ UNKNOWN
Plot creation:
Wed Aug 28 15:12:31 EDT 2013