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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
355.7138 -62.7187 0.0434 30.0 170.8 0.1132 4.4 TRIG_00604111
------------------------------------------
Foreground time interval of the image:
0.000 1.024 (delta_t = 1.024 [sec])
Background time interval of the image:
-109.243 -90.720 (delta_t = 18.523 [sec])
-60.944 -10.944 (delta_t = 50.000 [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 1.024000
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 1.024000
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 1.024000
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 1.024 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.24308 ( -0.841489 1.19477 )
Norm@50keV : 1.77306E-03 ( -0.00179756 0.00289739 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.33 using 59 PHA bins.
# Reduced chi-squared = 1.216 for 57 degrees of freedom
# Null hypothesis probability = 1.267845e-01
Photon flux (15-150 keV) in 1.024 sec: 0.465001 ( -0.30249 0.256412 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.93394e-08 ( -4.92726e-08 3.48746e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.20462 ( -1.74924 1.16677 )
Epeak [keV] : 9998.62 ( -9991.51 -9991.51 )
Norm@50keV : 1.98823E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.27 using 59 PHA bins.
# Reduced chi-squared = 1.237 for 56 degrees of freedom
# Null hypothesis probability = 1.095643e-01
Photon flux (15-150 keV) in 1.024 sec: 0.480837 ( -0.480837 0.239449 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.2548e-08 ( -8.2548e-08 3.86608e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.616716 ( -0.667137 -0.667137 )
beta : 1.19669 ( -1.1891 0.846937 )
Epeak [keV] : 16.1957 ( -15.9266 -15.9266 )
Norm@50keV : 4.10728E-03 ( -0.00408426 530.01 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.33 using 59 PHA bins.
# Reduced chi-squared = 1.260 for 55 degrees of freedom
# Null hypothesis probability = 9.259621e-02
Photon flux (15-150 keV) in 1.024 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] : 2.13820 (-2.12136 3.14807)
R^2/D10^2 : 294.629 (-415.655 -415.655)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 83.88 using 59 PHA bins.
# Reduced chi-squared = 1.472 for 57 degrees of freedom
# Null hypothesis probability = 1.177425e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.908e-09 2.955e-09
25- 50 1.833e-10 1.230e-10
50-150 1.100e-14 1.309e-14
15-150 5.092e-09 2.603e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 3.22479 ( )
Norm : 246.717 (-251.101 -251.101)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 84.00 using 59 PHA bins.
# Reduced chi-squared = 1.474 for 57 degrees of freedom
# Null hypothesis probability = 1.150742e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.589e-09 2.702e-09
25- 50 2.311e-10 1.375e-10
50-150 1.426e-13 3.043e-13
15-150 4.820e-09 2.608e-09
Double BB
R1^2/D10^2 : 580.684 ( )
kT2 [keV] : 197.769 ( )
R2^2/D10^2 : 2.97422E-04 (-0.000119793 0.00144109)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.50 using 59 PHA bins.
#Fit statistic : Chi-Squared = 66.93 using 59 PHA bins.
#Fit statistic : Chi-Squared = 66.89 using 59 PHA bins.
# Reduced chi-squared = 1.227 for 55 degrees of freedom
# Reduced chi-squared = 1.217 for 55 degrees of freedom
# Reduced chi-squared = 1.216 for 55 degrees of freedom
# Null hypothesis probability = 1.201743e-01
# Null hypothesis probability = 1.298592e-01
# Null hypothesis probability = 1.305628e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.833e-09 2.272e-09
25- 50 4.103e-09 2.935e-09
50-150 7.982e-08 7.839e-08
15-150 8.876e-08 7.327e-08
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.24308 ( -0.841489 1.19477 )
Norm@50keV : 1.77306E-03 ( -0.00179756 0.00289739 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.33 using 59 PHA bins.
# Reduced chi-squared = 1.216 for 57 degrees of freedom
# Null hypothesis probability = 1.267845e-01
Photon flux (15-150 keV) in 1.024 sec: 0.465001 ( -0.30249 0.256412 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.93394e-08 ( -4.92726e-08 3.48746e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.20462 ( -1.74924 1.16677 )
Epeak [keV] : 9998.62 ( -9991.51 -9991.51 )
Norm@50keV : 1.98823E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.27 using 59 PHA bins.
# Reduced chi-squared = 1.237 for 56 degrees of freedom
# Null hypothesis probability = 1.095643e-01
Photon flux (15-150 keV) in 1.024 sec: 0.480837 ( -0.480837 0.239449 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.2548e-08 ( -8.2548e-08 3.86608e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.616716 ( -0.667137 -0.667137 )
beta : 1.19669 ( -1.1891 0.846937 )
Epeak [keV] : 16.1957 ( -15.9266 -15.9266 )
Norm@50keV : 4.10728E-03 ( -0.00408426 530.01 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.33 using 59 PHA bins.
# Reduced chi-squared = 1.260 for 55 degrees of freedom
# Null hypothesis probability = 9.259621e-02
Photon flux (15-150 keV) in 1.024 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] : 2.13820 (-2.12136 3.14807)
R^2/D10^2 : 294.629 (-415.655 -415.655)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 83.88 using 59 PHA bins.
# Reduced chi-squared = 1.472 for 57 degrees of freedom
# Null hypothesis probability = 1.177425e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.908e-09 2.957e-09
25- 50 1.833e-10 1.319e-10
50-150 1.100e-14 1.496e-14
15-150 5.092e-09 2.954e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 3.22479 ( )
Norm : 246.717 (-251.101 -251.101)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 84.00 using 59 PHA bins.
# Reduced chi-squared = 1.474 for 57 degrees of freedom
# Null hypothesis probability = 1.150742e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.589e-09 2.418e-09
25- 50 2.311e-10 1.253e-10
50-150 1.426e-13 1.511e-13
15-150 4.820e-09 2.534e-09
Double BB
R1^2/D10^2 : 582.974 ( )
kT2 [keV] : 200.000 ( )
R2^2/D10^2 : 2.91855E-04 (-0.000116844 0.00091581)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.50 using 59 PHA bins.
#Fit statistic : Chi-Squared = 66.93 using 59 PHA bins.
#Fit statistic : Chi-Squared = 66.89 using 59 PHA bins.
# Reduced chi-squared = 1.227 for 55 degrees of freedom
# Reduced chi-squared = 1.217 for 55 degrees of freedom
# Reduced chi-squared = 1.216 for 55 degrees of freedom
# Null hypothesis probability = 1.201743e-01
# Null hypothesis probability = 1.298592e-01
# Null hypothesis probability = 1.306768e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.833e-09 2.843e-09
25- 50 4.103e-09 2.611e-09
50-150 7.982e-08 7.547e-08
15-150 8.876e-08 6.902e-08
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: -1.24308 ( -0.841489 1.19477 )
Norm@50keV : 1.77306E-03 ( -0.00179756 0.00289739 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.33 using 59 PHA bins.
# Reduced chi-squared = 1.216 for 57 degrees of freedom
# Null hypothesis probability = 1.267845e-01
Photon flux (15-150 keV) in 1.024 sec: 0.465001 ( -0.30249 0.256412 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.93394e-08 ( -4.92726e-08 3.48746e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.20462 ( -1.74924 1.16677 )
Epeak [keV] : 9998.62 ( -9991.51 -9991.51 )
Norm@50keV : 1.98823E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.27 using 59 PHA bins.
# Reduced chi-squared = 1.237 for 56 degrees of freedom
# Null hypothesis probability = 1.095643e-01
Photon flux (15-150 keV) in 1.024 sec: 0.480837 ( -0.480837 0.239449 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.2548e-08 ( -8.2548e-08 3.86608e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.616716 ( -0.667137 -0.667137 )
beta : 1.19669 ( -1.1891 0.846937 )
Epeak [keV] : 16.1957 ( -15.9266 -15.9266 )
Norm@50keV : 4.10728E-03 ( -0.00408426 530.01 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.33 using 59 PHA bins.
# Reduced chi-squared = 1.260 for 55 degrees of freedom
# Null hypothesis probability = 9.259621e-02
Photon flux (15-150 keV) in 1.024 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) = 2.05e-09
S(50-100 keV) = 1.92e-08
T90 vs. Hardness ratio plot
T90 = 1.02399998903275 sec.
Hardness ratio (energy fluence ratio) = 9.36585
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = -0.719555
Count Ratio (50-100 keV) / (15-25 keV) = 2.9251
Mask shadow pattern
IMX = -5.702110651294685E-01, IMY = -9.218901206463688E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
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:
-109.243410 -90.720100
-60.944000 -10.944000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.1795 -60.6235 3.9 30.7 -49.8 1.3153 2.9 4.0 Cen X-3
186.7171 -62.7603 1.6 25.9 -36.0 2.5879 7.3 1.8 GX 301-2
255.8192 -37.8020 8.3 42.2 52.6 1.4592 1.4 8.3 4U 1700-377
256.5580 -36.5012 23.5 43.5 53.5 -0.5991 -0.5 7.5 GX 349+2
264.9909 -44.3698 10.7 35.7 63.7 -0.7612 -1.1 11.7 4U 1735-44
236.6656 -41.0029 3.2 39.9 29.8 1.9404 3.7 ------ UNKNOWN
294.4871 -75.8927 2.6 8.3 135.6 1.3500 4.3 ------ UNKNOWN
222.0815 -59.2968 3.0 23.4 5.8 1.2448 3.8 ------ UNKNOWN
208.7846 -30.1741 3.0 53.8 0.9 3.6198 3.8 ------ UNKNOWN
190.8347 -30.0064 3.4 56.7 -17.7 4.1911 3.5 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 1.024000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.4210 -60.8005 0.0 30.5 -49.7 0.0348 1.2 11.1 Cen X-3
187.0438 -62.6646 3.6 25.9 -35.6 0.0760 3.3 12.4 GX 301-2
256.0641 -37.8212 9.2 42.2 52.9 -0.0982 -1.3 3.9 4U 1700-377
256.5454 -36.5114 6.5 43.5 53.5 -0.1610 -1.8 7.5 GX 349+2
264.6043 -44.5645 52.3 35.5 63.2 -0.0107 -0.2 9.1 4U 1735-44
331.9537 -54.8174 2.5 33.5 143.8 0.1591 4.5 ------ UNKNOWN
211.7446 -26.3430 2.3 57.1 4.7 0.6605 4.9 ------ UNKNOWN
208.2232 -49.2775 2.2 35.1 -5.2 0.1388 5.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
Plot creation:
Thu Jul 31 01:21:57 EDT 2014