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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
297.3885 +30.2277 0.0545 33.2 15.2 1.9073 3.5 TRIG_00573217
------------------------------------------
Foreground time interval of the image:
213.000 963.019 (delta_t = 750.019 [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 1496.000000
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 1496.000000
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 1496.000000
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
The mask-weighted light curves based on cleaned DPHs
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 213.000 sec. to 963.019 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.58994 ( -0.514273 0.616172 )
Norm@50keV : 1.07853E-04 ( -4.84215e-05 5.19954e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.56 using 59 PHA bins.
# Reduced chi-squared = 1.133 for 57 degrees of freedom
# Null hypothesis probability = 2.294468e-01
Photon flux (15-150 keV) in 750 sec: 2.24050E-02 ( -0.00615383 0.00619411 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.28825e-07 ( -2.74124e-07 3.0606e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 213.000 sec. to 963.019 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.65186 ( )
Epeak [keV] : 25.7915 ( -2.80075 3.02925 )
Norm@50keV : 7.98928E+04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.21 using 59 PHA bins.
# Reduced chi-squared = 0.9145 for 56 degrees of freedom
# Null hypothesis probability = 6.562900e-01
Photon flux (15-150 keV) in 750 sec: 2.19577E-02 ( -0.0051636 0.0053007 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.52865e-07 ( -1.54435e-07 1.66173e-07 ) ergs/cm2
Band function
Time interval is from 213.000 sec. to 963.019 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -3.01819 -5 )
beta : -9.37167 ( 9.37167 19.2833 )
Epeak [keV] : 25.5956 ( -3.33905 3.67417 )
Norm@50keV : 32.4545 ( -7.69612 54.9668 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.82 using 59 PHA bins.
# Reduced chi-squared = 0.9604 for 55 degrees of freedom
# Null hypothesis probability = 5.583542e-01
Photon flux (15-150 keV) in 750 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] : 6.20563 (-1.1057 1.35174)
R^2/D10^2 : 7.99889E-02 (-0.0463444 0.106392)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.83 using 59 PHA bins.
# Reduced chi-squared = 0.9795 for 57 degrees of freedom
# Null hypothesis probability = 5.189662e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.217e-07 1.842e-07
25- 50 3.449e-07 2.163e-07
50-150 3.619e-08 3.026e-08
15-150 7.028e-07 3.759e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 22.9024 (-8.61569 17.9022)
Norm : 0.241179 (-0.105277 0.191604)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.24 using 59 PHA bins.
# Reduced chi-squared = 1.074 for 57 degrees of freedom
# Null hypothesis probability = 3.263675e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.120e-07 1.431e-07
25- 50 3.016e-07 1.741e-07
50-150 1.124e-07 9.935e-08
15-150 7.260e-07 3.731e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 199.342 ( )
R1^2/D10^2 : 5.55916E-07 (-5.76659e-07 -5.76659e-07)
kT2 [keV] : 6.14852 (-1.10442 1.34716)
R2^2/D10^2 : 8.24591E-02 (-0.0476146 0.111712)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.83 using 59 PHA bins.
#Fit statistic : Chi-Squared = 55.52 using 59 PHA bins.
# Reduced chi-squared = 1.015 for 55 degrees of freedom
# Reduced chi-squared = 1.009 for 55 degrees of freedom
# Null hypothesis probability = 4.433481e-01
# Null hypothesis probability = 4.551508e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.221e-07 1.892e+01
25- 50 3.446e-07 1.452e+02
50-150 3.603e-08 3.904e+03
15-150 7.027e-07 4.208e+03
Peak spectrum fit
Power-law model
Time interval is from 213.000 sec. to 963.019 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.58994 ( -0.514273 0.616172 )
Norm@50keV : 1.07853E-04 ( -4.84215e-05 5.19954e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.56 using 59 PHA bins.
# Reduced chi-squared = 1.133 for 57 degrees of freedom
# Null hypothesis probability = 2.294468e-01
Photon flux (15-150 keV) in 750 sec: 2.24050E-02 ( -0.00615383 0.00619411 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.28825e-07 ( -2.74124e-07 3.0606e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 213.000 sec. to 963.019 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.65186 ( )
Epeak [keV] : 25.7915 ( -2.80075 3.02925 )
Norm@50keV : 7.98928E+04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.21 using 59 PHA bins.
# Reduced chi-squared = 0.9145 for 56 degrees of freedom
# Null hypothesis probability = 6.562900e-01
Photon flux (15-150 keV) in 750 sec: 2.19577E-02 ( -0.0051636 0.0053007 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.52865e-07 ( -1.54435e-07 1.66173e-07 ) ergs/cm2
Band function
Time interval is from 213.000 sec. to 963.019 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -3.01819 -5 )
beta : -9.37167 ( 9.37167 19.2833 )
Epeak [keV] : 25.5956 ( -3.33905 3.67417 )
Norm@50keV : 32.4545 ( -7.69612 54.9668 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.82 using 59 PHA bins.
# Reduced chi-squared = 0.9604 for 55 degrees of freedom
# Null hypothesis probability = 5.583542e-01
Photon flux (15-150 keV) in 750 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] : 6.20563 (-1.1057 1.35174)
R^2/D10^2 : 7.99889E-02 (-0.0463444 0.106392)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.83 using 59 PHA bins.
# Reduced chi-squared = 0.9795 for 57 degrees of freedom
# Null hypothesis probability = 5.189662e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.217e-07 1.763e-07
25- 50 3.449e-07 2.084e-07
50-150 3.619e-08 3.075e-08
15-150 7.028e-07 3.944e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 22.9024 (-8.61569 17.9022)
Norm : 0.241179 (-0.105277 0.191604)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.24 using 59 PHA bins.
# Reduced chi-squared = 1.074 for 57 degrees of freedom
# Null hypothesis probability = 3.263675e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.120e-07 1.371e-07
25- 50 3.016e-07 1.663e-07
50-150 1.124e-07 9.499e-08
15-150 7.260e-07 3.501e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 199.342 ( )
R1^2/D10^2 : 5.55916E-07 (-5.76659e-07 -5.76659e-07)
kT2 [keV] : 6.14852 (-1.10442 1.34716)
R2^2/D10^2 : 8.24591E-02 (-0.0476146 0.111712)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.83 using 59 PHA bins.
#Fit statistic : Chi-Squared = 55.52 using 59 PHA bins.
# Reduced chi-squared = 1.015 for 55 degrees of freedom
# Reduced chi-squared = 1.009 for 55 degrees of freedom
# Null hypothesis probability = 4.433481e-01
# Null hypothesis probability = 4.551508e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.221e-07 1.934e+01
25- 50 3.446e-07 1.611e+02
50-150 3.603e-08 3.848e+03
15-150 7.027e-07 3.998e+03
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: 2.58994 ( -0.514273 0.616172 )
Norm@50keV : 1.07853E-04 ( -4.84215e-05 5.19954e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.56 using 59 PHA bins.
# Reduced chi-squared = 1.133 for 57 degrees of freedom
# Null hypothesis probability = 2.294468e-01
Photon flux (15-150 keV) in 750 sec: 2.24050E-02 ( -0.00615383 0.00619411 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.28825e-07 ( -2.74124e-07 3.0606e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.65186 ( )
Epeak [keV] : 25.7915 ( -2.80075 3.02925 )
Norm@50keV : 7.98928E+04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.21 using 59 PHA bins.
# Reduced chi-squared = 0.9145 for 56 degrees of freedom
# Null hypothesis probability = 6.562900e-01
Photon flux (15-150 keV) in 750 sec: 2.19577E-02 ( -0.0051636 0.0053007 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.52865e-07 ( -1.54435e-07 1.66173e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -3.01819 -5 )
beta : -9.37167 ( 9.37167 19.2833 )
Epeak [keV] : 25.5956 ( -3.33905 3.67417 )
Norm@50keV : 32.4545 ( -7.69612 54.9668 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.82 using 59 PHA bins.
# Reduced chi-squared = 0.9604 for 55 degrees of freedom
# Null hypothesis probability = 5.583542e-01
Photon flux (15-150 keV) in 750 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) = 2.77078e-07
S(50-100 keV) = 1.83618e-07
T90 vs. Hardness ratio plot
T90 = 1496 sec.
Hardness ratio (energy fluence ratio) = 0.662694
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.682402
Count Ratio (50-100 keV) / (15-25 keV) = -0.00702663
Mask shadow pattern
IMX = 6.312333172788237E-01, IMY = -1.713881856858404E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1496.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1496.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1496.000000
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:
213.000000 963.018900
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4967 35.3319 7.2 54.6 -28.5 3.1451 1.6 2.0 Her X-1
263.0285 -24.7638 5.2 38.6 -114.2 2.5792 2.2 1.5 GX 1+4
264.8237 -44.3653 12.8 49.8 -137.7 1.9046 0.9 6.2 4U 1735-44
268.3859 -1.4011 4.8 27.8 -74.2 1.5456 2.4 3.3 SW J1753.5-0127
270.4259 -24.9864 2611.3 33.1 -120.9 0.0025 0.0 9.5 GX 5-1
270.2350 -25.7864 4.9 33.8 -121.8 1.6570 2.3 4.5 GRS 1758-258
274.0436 -13.9284 3.7 24.4 -104.9 1.6794 3.1 6.8 GX 17+2
276.0363 -30.2255 19.7 33.3 -134.1 0.3967 0.6 10.3 H1820-303
284.8616 -24.8666 5.0 24.5 -141.5 1.0512 2.3 10.0 HT1900.1-2455
288.8141 10.9346 0.6 15.7 -14.4 8.1666 19.2 1.1 GRS 1915+105
299.6333 35.1830 1.3 38.3 17.8 6.1892 9.2 2.4 Cyg X-1
308.1488 40.9508 2.8 45.2 26.0 4.7266 4.1 1.8 Cyg X-3
263.0886 -33.7196 23.5 43.5 -125.7 0.7731 0.5 8.5 GX 354-0
332.0961 -10.0304 3.6 36.4 116.1 3.8864 3.2 ------ UNKNOWN
319.6478 35.4372 3.2 44.3 41.0 6.0011 3.6 ------ UNKNOWN
302.4729 -1.5249 2.4 6.5 90.8 2.0258 4.7 ------ UNKNOWN
262.1922 27.8317 3.6 44.9 -31.2 2.7051 3.2 ------ UNKNOWN
254.6746 18.1033 3.7 45.9 -47.9 4.9986 3.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
Plot creation:
Fri Oct 18 21:58:18 EDT 2013