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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
279.8946 +5.1271 0.0623 36.5 -162.1 0.3905 3.1 TRIG_00677890
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [sec])
Background time interval of the image:
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 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.27305 ( -0.625177 0.746764 )
Norm@50keV : 3.79332E-04 ( -0.000187656 0.000188713 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.44 using 59 PHA bins.
# Reduced chi-squared = 0.7972 for 57 degrees of freedom
# Null hypothesis probability = 8.648242e-01
Photon flux (15-150 keV) in 64 sec: 6.53148E-02 ( -0.0239169 0.0239267 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.30668e-07 ( -9.49946e-08 1.03822e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.56629 ( 1.61673 3.51239 )
Epeak [keV] : 31.0605 ( )
Norm@50keV : 0.122022 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.27 using 59 PHA bins.
# Reduced chi-squared = 0.7548 for 56 degrees of freedom
# Null hypothesis probability = 9.127082e-01
Photon flux (15-150 keV) in 64 sec: 6.17914E-02 ( -0.0224203 0.0230142 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.84494e-07 ( -6.91981e-08 6.23034e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.95210 ( -9.57909 -4.9521 )
beta : -3.16857 ( 3.16857 1.10811 )
Epeak [keV] : 26.1023 ( -8.54304 9.29826 )
Norm@50keV : 63.6409 ( -21.6125 873.603 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.16 using 59 PHA bins.
# Reduced chi-squared = 0.7666 for 55 degrees of freedom
# Null hypothesis probability = 8.979263e-01
Photon flux (15-150 keV) in 64 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] : 7.97496 (-2.20076 2.99205)
R^2/D10^2 : 7.96229E-02 (-0.0796229 0.219155)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.29 using 59 PHA bins.
# Reduced chi-squared = 0.7420 for 57 degrees of freedom
# Null hypothesis probability = 9.270201e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.847e-08 3.696e-08
25- 50 1.018e-07 6.330e-08
50-150 2.645e-08 2.157e-08
15-150 1.867e-07 1.188e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 36.4352 (-18.5754 65.9308)
Norm : 0.466325 (-0.232737 0.470544)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.94 using 59 PHA bins.
# Reduced chi-squared = 0.7709 for 57 degrees of freedom
# Null hypothesis probability = 8.975284e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.626e-08 4.147e-08
25- 50 8.358e-08 4.938e-08
50-150 5.820e-08 5.008e-08
15-150 2.080e-07 1.405e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 200.000 (-200 -200)
R1^2/D10^2 : 1.30880E-06 (-1.30884e-06 -1.30884e-06)
kT2 [keV] : 7.83299 (-2.17617 3.06831)
R2^2/D10^2 : 8.45173E-02 (-0.0631263 0.207216)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.29 using 59 PHA bins.
#Fit statistic : Chi-Squared = 42.20 using 59 PHA bins.
# Reduced chi-squared = 0.7689 for 55 degrees of freedom
# Reduced chi-squared = 0.7673 for 55 degrees of freedom
# Null hypothesis probability = 8.952802e-01
# Null hypothesis probability = 8.970799e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.850e-08 1.365e-02
25- 50 1.018e-07 1.132e-01
50-150 2.654e-08 2.828e+00
15-150 1.868e-07 2.740e+00
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.27305 ( -0.625177 0.746764 )
Norm@50keV : 3.79332E-04 ( -0.000187656 0.000188713 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.44 using 59 PHA bins.
# Reduced chi-squared = 0.7972 for 57 degrees of freedom
# Null hypothesis probability = 8.648242e-01
Photon flux (15-150 keV) in 64 sec: 6.53148E-02 ( -0.0239169 0.0239267 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.30668e-07 ( -9.49946e-08 1.03822e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.56629 ( 1.61673 3.51239 )
Epeak [keV] : 31.0605 ( )
Norm@50keV : 0.122022 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.27 using 59 PHA bins.
# Reduced chi-squared = 0.7548 for 56 degrees of freedom
# Null hypothesis probability = 9.127082e-01
Photon flux (15-150 keV) in 64 sec: 6.17914E-02 ( -0.0224203 0.0230142 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.84494e-07 ( -6.91981e-08 6.23034e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.95210 ( -6.67805 -4.9521 )
beta : -3.16857 ( 3.16857 1.10811 )
Epeak [keV] : 26.1023 ( -8.54304 9.29826 )
Norm@50keV : 63.6409 ( -21.6125 873.603 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.16 using 59 PHA bins.
# Reduced chi-squared = 0.7666 for 55 degrees of freedom
# Null hypothesis probability = 8.979263e-01
Photon flux (15-150 keV) in 64 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] : 7.97496 (-2.20076 2.99205)
R^2/D10^2 : 7.96229E-02 (-0.0796229 0.219155)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.29 using 59 PHA bins.
# Reduced chi-squared = 0.7420 for 57 degrees of freedom
# Null hypothesis probability = 9.270201e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.847e-08 3.818e-08
25- 50 1.018e-07 6.394e-08
50-150 2.645e-08 2.086e-08
15-150 1.867e-07 1.190e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 36.4352 (-18.5754 65.9308)
Norm : 0.466325 (-0.232737 0.470544)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.94 using 59 PHA bins.
# Reduced chi-squared = 0.7709 for 57 degrees of freedom
# Null hypothesis probability = 8.975284e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.626e-08 4.109e-08
25- 50 8.358e-08 5.462e-08
50-150 5.820e-08 4.941e-08
15-150 2.080e-07 1.389e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 200.000 (-200 -200)
R1^2/D10^2 : 1.30880E-06 (-1.30884e-06 -1.30884e-06)
kT2 [keV] : 7.83299 (-2.17617 3.06831)
R2^2/D10^2 : 8.45173E-02 (-0.0631263 0.207216)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.29 using 59 PHA bins.
#Fit statistic : Chi-Squared = 42.20 using 59 PHA bins.
# Reduced chi-squared = 0.7689 for 55 degrees of freedom
# Reduced chi-squared = 0.7673 for 55 degrees of freedom
# Null hypothesis probability = 8.952802e-01
# Null hypothesis probability = 8.970799e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.850e-08 1.548e-02
25- 50 1.018e-07 1.042e-01
50-150 2.654e-08 2.519e+00
15-150 1.868e-07 2.679e+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: 2.27305 ( -0.625177 0.746764 )
Norm@50keV : 3.79332E-04 ( -0.000187656 0.000188713 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.44 using 59 PHA bins.
# Reduced chi-squared = 0.7972 for 57 degrees of freedom
# Null hypothesis probability = 8.648242e-01
Photon flux (15-150 keV) in 64 sec: 6.53148E-02 ( -0.0239169 0.0239267 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.30668e-07 ( -9.49946e-08 1.03822e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.56629 ( 1.61673 3.51239 )
Epeak [keV] : 31.0605 ( )
Norm@50keV : 0.122022 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.27 using 59 PHA bins.
# Reduced chi-squared = 0.7548 for 56 degrees of freedom
# Null hypothesis probability = 9.127082e-01
Photon flux (15-150 keV) in 64 sec: 6.17914E-02 ( -0.0224203 0.0230142 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.84494e-07 ( -6.91981e-08 6.23034e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.95210 ( -6.69529 -4.9521 )
beta : -3.16857 ( 3.16857 1.10811 )
Epeak [keV] : 26.1023 ( -8.54304 9.29826 )
Norm@50keV : 63.6409 ( -21.6125 873.603 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.16 using 59 PHA bins.
# Reduced chi-squared = 0.7666 for 55 degrees of freedom
# Null hypothesis probability = 8.979263e-01
Photon flux (15-150 keV) in 64 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) = 7.42e-08
S(50-100 keV) = 6.13e-08
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.826146
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.30377
Count Ratio (50-100 keV) / (15-25 keV) = 0.125014
Mask shadow pattern
IMX = -7.044089235230862E-01, IMY = 2.277656224715983E-01
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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 64.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9843 -15.6395 0.5 23.8 114.4 2.6533 22.7 0.3 Sco X-1
255.9039 -37.8368 95.5 12.4 37.0 -0.0102 -0.1 3.9 4U 1700-377
256.6480 -36.3046 0.0 11.0 40.9 0.0323 0.4 12.5 GX 349+2
263.0630 -24.7450 4.1 5.2 139.1 0.2645 2.8 2.9 GX 1+4
264.7926 -44.5639 3.0 15.6 -0.7 0.3504 3.8 7.2 4U 1735-44
268.4249 -1.4927 37.3 27.6 179.3 0.0312 0.3 4.2 SW J1753.5-0127
270.2993 -25.0816 2.1 5.2 -142.8 0.5083 5.5 0.8 GX 5-1
270.1576 -25.7503 6.2 4.7 -138.7 0.1828 1.9 7.8 GRS 1758-258
273.9469 -14.0350 4.4 16.5 -158.5 0.2460 2.6 3.4 GX 17+2
276.0996 -30.2543 3.1 8.5 -84.2 0.3500 3.7 11.3 H1820-303
285.1728 -25.0374 84.0 17.1 -104.0 0.0138 0.1 10.2 HT1900.1-2455
288.8405 10.9541 4.1 45.4 -153.3 0.5774 2.8 2.5 GRS 1915+105
262.9677 -33.7967 11.0 5.6 25.7 0.1015 1.1 2.5 GX 354-0
227.7525 -11.2620 2.6 40.1 103.1 1.8091 4.4 ------ UNKNOWN
260.3133 13.2645 2.5 42.7 166.2 0.8402 4.5 ------ UNKNOWN
275.3480 -6.0065 2.3 24.5 -163.2 0.4895 5.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
129.500600 963.045800
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9829 -15.6395 0.7 40.3 50.4 27.5319 17.1 0.2 Sco X-1
254.3059 35.4467 13.4 38.4 137.5 -1.1957 -0.9 9.7 Her X-1
256.0553 -37.8273 3.0 48.3 17.3 6.2849 3.8 3.4 4U 1700-377
256.4889 -36.3442 5.3 46.9 17.9 3.3830 2.2 5.4 GX 349+2
263.1085 -24.7094 2.9 34.0 19.9 3.0383 4.0 5.8 GX 1+4
264.6221 -44.5809 6.0 51.5 5.8 3.3154 1.9 9.4 4U 1735-44
268.2101 -1.5204 24.1 13.4 52.6 -0.2916 -0.5 10.3 SW J1753.5-0127
270.3687 -25.0883 1.4 31.6 8.6 4.9990 8.0 4.6 GX 5-1
270.1488 -25.8095 12.6 32.3 8.5 -0.5971 -0.9 9.2 GRS 1758-258
274.0019 -13.9809 1.9 19.9 8.9 3.4141 6.1 3.3 GX 17+2
275.9030 -30.3524 37.4 35.7 -2.2 0.2495 0.3 1.4 H1820-303
284.8765 -25.0427 47.4 30.5 -17.0 -0.1472 -0.2 11.4 HT1900.1-2455
288.7858 10.9274 0.8 10.6 -132.0 8.6782 13.6 1.3 GRS 1915+105
299.5696 35.2043 0.4 35.2 -159.5 26.5444 29.6 1.0 Cyg X-1
308.1265 40.9397 3.0 43.9 -157.0 4.6768 3.8 1.1 Cyg X-3
326.2813 38.1742 12.2 53.5 -142.9 5.4772 0.9 10.2 Cyg X-2
263.1339 -33.7967 2700.0 42.0 12.9 -0.0019 -0.0 7.6 GX 354-0
266.5647 -32.2435 1.9 39.4 9.8 5.2514 6.1 ------ UNKNOWN
286.6087 56.4554 3.6 51.6 176.7 5.8536 3.3 ------ UNKNOWN
287.8328 58.8708 3.2 54.1 177.0 9.7190 3.6 ------ UNKNOWN
278.9526 23.2587 3.1 18.2 169.3 2.0754 3.7 ------ UNKNOWN
UNKNOWN
Plot creation:
Sun Mar 6 12:36:04 EST 2016