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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
171.1650 -60.6232 1.2376 14.4 -161.7 -0.0737 -0.2 TRIG_00559108
------------------------------------------
Foreground time interval of the image:
0.000 704.000 (delta_t = 704.000 [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 704.000000
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 704.000000
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 704.000000
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 704.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.12956 ( -0.755901 1.04314 )
Norm@50keV : 6.80049E-05 ( -4.33466e-05 4.33225e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.15 using 59 PHA bins.
# Reduced chi-squared = 0.8622 for 57 degrees of freedom
# Null hypothesis probability = 7.608954e-01
Photon flux (15-150 keV) in 704 sec: 1.08541E-02 ( -0.00506628 0.00509033 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.44989e-07 ( -2.4136e-07 2.77127e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 704.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.17371 ( 1.2428 3.32404 )
Epeak [keV] : 37.6626 ( -18.7035 -37.6761 )
Norm@50keV : 6.43153E-03 ( -0.00816229 26103.9 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.86 using 59 PHA bins.
# Reduced chi-squared = 0.8368 for 56 degrees of freedom
# Null hypothesis probability = 8.028388e-01
Photon flux (15-150 keV) in 704 sec: 1.05269E-02 ( -0.00483565 0.0049218 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.95941e-07 ( -1.88559e-07 2.30208e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 704.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.73917 ( -4.59526 -2.17851 )
beta : -9.37167 ( 9.37167 18.8789 )
Epeak [keV] : 38.2647 ( -14.8108 33.6981 )
Norm@50keV : 1.32522E-02 ( -0.0124579 24.6867 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.85 using 59 PHA bins.
# Reduced chi-squared = 0.8518 for 55 degrees of freedom
# Null hypothesis probability = 7.748385e-01
Photon flux (15-150 keV) in 704 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] : 9.72250 (-3.39792 4.70151)
R^2/D10^2 : 6.46837E-03 (-0.00646837 0.0260351)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.82 using 59 PHA bins.
# Reduced chi-squared = 0.8214 for 57 degrees of freedom
# Null hypothesis probability = 8.298016e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.678e-08 5.389e-08
25- 50 2.072e-07 1.335e-07
50-150 9.963e-08 8.040e-08
15-150 3.936e-07 2.714e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 46.8470 (-29.3901 -47.4335)
Norm : 6.66493E-02 (-0.0356589 0.0765833)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.07 using 59 PHA bins.
# Reduced chi-squared = 0.8433 for 57 degrees of freedom
# Null hypothesis probability = 7.942935e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.129e-07 7.230e-08
25- 50 1.584e-07 1.058e-07
50-150 1.444e-07 1.346e-07
15-150 4.156e-07 3.005e-07
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.82 using 59 PHA bins.
#Fit statistic : Chi-Squared = 46.69 using 59 PHA bins.
#Fit statistic : Chi-Squared = 46.58 using 59 PHA bins.
#Fit statistic : Chi-Squared = 46.55 using 59 PHA bins.
# Reduced chi-squared = 0.8513 for 55 degrees of freedom
# Reduced chi-squared = 0.8489 for 55 degrees of freedom
# Reduced chi-squared = 0.8469 for 55 degrees of freedom
# Reduced chi-squared = 0.8464 for 55 degrees of freedom
# Null hypothesis probability = 7.757108e-01
# Null hypothesis probability = 7.798758e-01
# Null hypothesis probability = 7.833070e-01
# Null hypothesis probability = 7.842069e-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 704.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.12956 ( -0.755901 1.04314 )
Norm@50keV : 6.80049E-05 ( -4.33466e-05 4.33225e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.15 using 59 PHA bins.
# Reduced chi-squared = 0.8622 for 57 degrees of freedom
# Null hypothesis probability = 7.608954e-01
Photon flux (15-150 keV) in 704 sec: 1.08541E-02 ( -0.00506628 0.00509033 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.44989e-07 ( -2.4136e-07 2.77127e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 704.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.17371 ( 1.2428 3.32404 )
Epeak [keV] : 37.6626 ( -18.7035 -37.6761 )
Norm@50keV : 6.43153E-03 ( -0.00816229 26103.9 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.86 using 59 PHA bins.
# Reduced chi-squared = 0.8368 for 56 degrees of freedom
# Null hypothesis probability = 8.028388e-01
Photon flux (15-150 keV) in 704 sec: 1.05269E-02 ( -0.00483565 0.0049218 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.95941e-07 ( -1.88559e-07 2.30208e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 704.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.73917 ( -4.59516 -2.17851 )
beta : -9.37167 ( 9.37167 18.8789 )
Epeak [keV] : 38.2647 ( -14.8108 33.6981 )
Norm@50keV : 1.32522E-02 ( -0.0124579 26.1317 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.85 using 59 PHA bins.
# Reduced chi-squared = 0.8518 for 55 degrees of freedom
# Null hypothesis probability = 7.748385e-01
Photon flux (15-150 keV) in 704 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] : 9.72250 (-3.39792 4.70151)
R^2/D10^2 : 6.46837E-03 (-0.00646837 0.0260351)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.82 using 59 PHA bins.
# Reduced chi-squared = 0.8214 for 57 degrees of freedom
# Null hypothesis probability = 8.298016e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.678e-08 5.474e-08
25- 50 2.072e-07 1.316e-07
50-150 9.963e-08 7.913e-08
15-150 3.936e-07 2.602e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 46.8470 (-29.3901 -47.4335)
Norm : 6.66493E-02 (-0.0356594 0.0765833)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.07 using 59 PHA bins.
# Reduced chi-squared = 0.8433 for 57 degrees of freedom
# Null hypothesis probability = 7.942935e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.129e-07 7.367e-08
25- 50 1.584e-07 1.098e-07
50-150 1.444e-07 1.323e-07
15-150 4.156e-07 2.935e-07
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.82 using 59 PHA bins.
#Fit statistic : Chi-Squared = 46.69 using 59 PHA bins.
#Fit statistic : Chi-Squared = 46.58 using 59 PHA bins.
#Fit statistic : Chi-Squared = 46.55 using 59 PHA bins.
# Reduced chi-squared = 0.8513 for 55 degrees of freedom
# Reduced chi-squared = 0.8489 for 55 degrees of freedom
# Reduced chi-squared = 0.8469 for 55 degrees of freedom
# Reduced chi-squared = 0.8464 for 55 degrees of freedom
# Null hypothesis probability = 7.757108e-01
# Null hypothesis probability = 7.798758e-01
# Null hypothesis probability = 7.833070e-01
# Null hypothesis probability = 7.842069e-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: 2.12956 ( -0.755901 1.04314 )
Norm@50keV : 6.80049E-05 ( -4.33466e-05 4.33225e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.15 using 59 PHA bins.
# Reduced chi-squared = 0.8622 for 57 degrees of freedom
# Null hypothesis probability = 7.608954e-01
Photon flux (15-150 keV) in 704 sec: 1.08541E-02 ( -0.00506628 0.00509033 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.44989e-07 ( -2.4136e-07 2.77127e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.17371 ( 1.2428 3.32404 )
Epeak [keV] : 37.6626 ( -18.7035 -37.6761 )
Norm@50keV : 6.43153E-03 ( -0.00816229 26103.9 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.86 using 59 PHA bins.
# Reduced chi-squared = 0.8368 for 56 degrees of freedom
# Null hypothesis probability = 8.028388e-01
Photon flux (15-150 keV) in 704 sec: 1.05269E-02 ( -0.00483565 0.0049218 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.95941e-07 ( -1.88559e-07 2.30208e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.73917 ( -9.79705 -2.17851 )
beta : -9.37167 ( 9.37167 18.8789 )
Epeak [keV] : 38.2647 ( -14.8108 33.6981 )
Norm@50keV : 1.32522E-02 ( -0.0124579 27.1899 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.85 using 59 PHA bins.
# Reduced chi-squared = 0.8518 for 55 degrees of freedom
# Null hypothesis probability = 7.748385e-01
Photon flux (15-150 keV) in 704 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) = 1.38883e-07
S(50-100 keV) = 1.2644e-07
T90 vs. Hardness ratio plot
T90 = 704 sec.
Hardness ratio (energy fluence ratio) = 0.910407
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.97023
Count Ratio (50-100 keV) / (15-25 keV) = 0.216031
Mask shadow pattern
IMX = -2.444408026510040E-01, IMY = 8.087304837189714E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 704.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 704.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 704.000000
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 704.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5272 -40.5549 55.0 35.3 -105.0 -0.2426 -0.2 0.1 Vela X-1
170.2587 -60.6548 1.4 14.7 -160.4 3.8656 8.5 2.5 Cen X-3
186.7953 -62.7709 2.5 14.4 167.0 2.1448 4.7 3.8 GX 301-2
230.3414 -57.1887 3.4 28.3 116.2 2.2763 3.4 ------ UNKNOWN
195.2964 -61.6659 2.0 14.5 150.5 2.6248 5.7 ------ UNKNOWN
177.6626 10.8429 3.8 59.6 -17.1 9.5044 3.1 ------ UNKNOWN
63.9404 -62.4757 3.7 59.6 -161.7 14.2452 3.1 ------ UNKNOWN
137.2748 -43.6767 2.8 32.7 -108.9 3.2164 4.1 ------ UNKNOWN
71.1074 -59.4611 3.0 59.4 -156.3 15.7820 3.9 ------ UNKNOWN
151.7683 -11.6643 3.9 45.8 -57.0 7.3352 3.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
891.900600 905.300590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9948 -15.6232 1.4 28.1 -165.2 0.4131 8.1 1.3 Sco X-1
256.0367 -37.6890 7.2 32.1 146.2 0.1029 1.6 9.6 4U 1700-377
256.2599 -36.4222 6.0 30.9 147.2 -0.1202 -1.9 8.5 GX 349+2
262.8693 -24.8229 5.9 18.2 151.5 -0.0847 -2.0 8.9 GX 1+4
264.6682 -44.6179 0.0 35.8 130.5 -0.1168 -1.3 10.6 4U 1735-44
268.4264 -1.5792 7.1 9.2 -90.7 0.0710 1.6 8.4 SW J1753.5-0127
270.3442 -24.8821 0.0 15.6 129.7 0.0429 0.9 12.3 GX 5-1
270.5224 -25.7909 5.0 16.5 128.6 0.1071 2.3 12.2 GRS 1758-258
273.8653 -14.0953 4.0 4.6 111.5 0.1266 2.9 8.9 GX 17+2
275.6894 -30.3121 0.0 20.9 114.0 0.0530 1.0 12.6 H1820-303
285.1762 -25.0156 15.5 19.3 85.3 -0.0389 -0.7 9.5 HT1900.1-2455
288.8302 10.9146 3.4 25.7 -22.1 0.1674 3.4 2.6 GRS 1915+105
299.8540 35.1281 0.0 51.3 -31.7 0.0489 0.4 13.7 Cyg X-1
263.2330 -33.9013 0.0 26.0 139.2 0.0862 1.6 12.8 GX 354-0
235.0210 10.5767 2.2 42.9 -122.8 0.6583 5.2 ------ UNKNOWN
269.6478 34.1628 2.7 43.8 -64.0 0.7856 4.2 ------ UNKNOWN
Plot creation:
Mon Jul 8 02:51:58 EDT 2013