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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
233.0292 +32.6470 0.0606 38.1 -160.9 0.4544 3.2 TRIG_00618673
------------------------------------------
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)
Flight mask-tagged light curves
Caution: Mask-weight map is always using the same on-axis map
Quad-rate summed light curves (from T0-300 to T0+1000)
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: 2.17471 ( -0.558148 0.627871 )
Norm@50keV : 4.48426E-04 ( -0.000212835 0.000207301 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.23 using 59 PHA bins.
# Reduced chi-squared = 1.302 for 57 degrees of freedom
# Null hypothesis probability = 6.227552e-02
Photon flux (15-150 keV) in 64 sec: 7.31372E-02 ( -0.0261615 0.0261387 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.62979e-07 ( -1.09773e-07 1.1746e-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: -6.61827 ( )
Epeak [keV] : 33.7632 ( -5.16032 6.97238 )
Norm@50keV : 168.091 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.77 using 59 PHA bins.
# Reduced chi-squared = 1.157 for 56 degrees of freedom
# Null hypothesis probability = 1.974186e-01
Photon flux (15-150 keV) in 64 sec: 7.07916E-02 ( -0.023415 0.0245999 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.24367e-07 ( -7.29011e-08 8.13478e-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 : 4.92762 ( -4.37611 -4.92762 )
beta : -9.37167 ( 9.37167 19.3251 )
Epeak [keV] : 34.2080 ( -5.93957 6.32893 )
Norm@50keV : 13.7382 ( -4.08223 40.6937 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.86 using 59 PHA bins.
# Reduced chi-squared = 1.179 for 55 degrees of freedom
# Null hypothesis probability = 1.705782e-01
Photon flux (15-150 keV) in 64 sec: 7.36734E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.33057e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.71921 (-1.91249 2.4683)
R^2/D10^2 : 7.02477E-02 (-0.070281 0.114247)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.36 using 59 PHA bins.
# Reduced chi-squared = 1.164 for 57 degrees of freedom
# Null hypothesis probability = 1.855493e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.541e-08 3.901e-08
25- 50 1.322e-07 8.493e-08
50-150 4.573e-08 3.574e-08
15-150 2.433e-07 1.528e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 40.9232 (-19.0714 53.0282)
Norm : 0.499844 (-0.215643 0.356317)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.15 using 59 PHA bins.
# Reduced chi-squared = 1.248 for 57 degrees of freedom
# Null hypothesis probability = 9.841728e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.402e-08 4.539e-08
25- 50 9.834e-08 5.965e-08
50-150 7.798e-08 6.221e-08
15-150 2.503e-07 1.702e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.67434 (-8.71531 -8.71531)
R1^2/D10^2 : 1.26831E-02 (-0.0129231 -0.0129231)
kT2 [keV] : 8.75303 (-8.72224 -8.72224)
R2^2/D10^2 : 5.68976E-02 (-0.057247 -0.057247)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.36 using 59 PHA bins.
# Reduced chi-squared = 1.207 for 55 degrees of freedom
# Null hypothesis probability = 1.402919e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.516e-08 7.382e+00
25- 50 1.322e-07 5.958e+01
50-150 4.605e-08 1.368e+03
15-150 2.434e-07 1.457e+03
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: 2.17471 ( -0.558148 0.627871 )
Norm@50keV : 4.48426E-04 ( -0.000212835 0.000207301 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.23 using 59 PHA bins.
# Reduced chi-squared = 1.302 for 57 degrees of freedom
# Null hypothesis probability = 6.227552e-02
Photon flux (15-150 keV) in 64 sec: 7.31372E-02 ( -0.0261615 0.0261387 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.62979e-07 ( -1.09773e-07 1.1746e-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: -6.61827 ( )
Epeak [keV] : 33.7632 ( -5.16032 6.97238 )
Norm@50keV : 168.091 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.77 using 59 PHA bins.
# Reduced chi-squared = 1.157 for 56 degrees of freedom
# Null hypothesis probability = 1.974186e-01
Photon flux (15-150 keV) in 64 sec: 7.07916E-02 ( -0.023415 0.0245999 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.24367e-07 ( -7.29011e-08 8.13478e-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 : 4.92762 ( -4.37611 -4.92762 )
beta : -9.37167 ( 9.37167 19.3251 )
Epeak [keV] : 34.2080 ( -5.93957 6.32893 )
Norm@50keV : 13.7382 ( -4.08223 40.6937 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.86 using 59 PHA bins.
# Reduced chi-squared = 1.179 for 55 degrees of freedom
# Null hypothesis probability = 1.705782e-01
Photon flux (15-150 keV) in 64 sec: 7.36734E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.33057e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.71921 (-1.91249 2.4683)
R^2/D10^2 : 7.02477E-02 (-0.070281 0.114247)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.36 using 59 PHA bins.
# Reduced chi-squared = 1.164 for 57 degrees of freedom
# Null hypothesis probability = 1.855493e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.541e-08 4.154e-08
25- 50 1.322e-07 7.717e-08
50-150 4.573e-08 3.632e-08
15-150 2.433e-07 1.507e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 40.9232 (-19.0714 53.0282)
Norm : 0.499844 (-0.215643 0.356317)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.15 using 59 PHA bins.
# Reduced chi-squared = 1.248 for 57 degrees of freedom
# Null hypothesis probability = 9.841728e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.402e-08 4.284e-08
25- 50 9.834e-08 6.158e-08
50-150 7.798e-08 6.358e-08
15-150 2.503e-07 1.658e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.67434 (-8.71531 -8.71531)
R1^2/D10^2 : 1.26831E-02 (-0.0129231 -0.0129231)
kT2 [keV] : 8.75303 (-8.72224 -8.72224)
R2^2/D10^2 : 5.68976E-02 (-0.057247 -0.057247)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.36 using 59 PHA bins.
# Reduced chi-squared = 1.207 for 55 degrees of freedom
# Null hypothesis probability = 1.402919e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.516e-08 6.336e+00
25- 50 1.322e-07 5.782e+01
50-150 4.605e-08 1.355e+03
15-150 2.434e-07 1.539e+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: 2.17471 ( -0.558148 0.627871 )
Norm@50keV : 4.48426E-04 ( -0.000212835 0.000207301 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.23 using 59 PHA bins.
# Reduced chi-squared = 1.302 for 57 degrees of freedom
# Null hypothesis probability = 6.227552e-02
Photon flux (15-150 keV) in 64 sec: 7.31372E-02 ( -0.0261615 0.0261387 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.62979e-07 ( -1.09773e-07 1.1746e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -6.61827 ( )
Epeak [keV] : 33.7632 ( -5.16032 6.97238 )
Norm@50keV : 168.091 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.77 using 59 PHA bins.
# Reduced chi-squared = 1.157 for 56 degrees of freedom
# Null hypothesis probability = 1.974186e-01
Photon flux (15-150 keV) in 64 sec: 7.07916E-02 ( -0.023415 0.0245999 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.24367e-07 ( -7.29011e-08 8.13478e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.92762 ( -4.37611 -4.92762 )
beta : -9.37167 ( 9.37167 19.3251 )
Epeak [keV] : 34.2080 ( -5.93957 6.32893 )
Norm@50keV : 13.7382 ( -4.08223 40.6937 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.86 using 59 PHA bins.
# Reduced chi-squared = 1.179 for 55 degrees of freedom
# Null hypothesis probability = 1.705782e-01
Photon flux (15-150 keV) in 64 sec: 7.36734E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.33057e-07 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 8.38e-08
S(50-100 keV) = 7.16e-08
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.854415
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 2.34788
Count Ratio (50-100 keV) / (15-25 keV) = 0.00556128
Mask shadow pattern
IMX = -7.402961324157872E-01, IMY = 2.557529618948383E-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] [']
254.4281 35.3942 40.7 55.4 -167.4 -0.0993 -0.3 3.4 Her X-1
240.5225 68.3453 2.3 51.3 150.3 2.5608 4.9 ------ UNKNOWN
177.8791 28.5229 2.2 10.4 51.2 0.4773 5.2 ------ UNKNOWN
153.4022 -10.1795 3.1 50.8 -3.0 0.8624 3.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
133.700590 963.073100
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4949 35.3477 2.3 18.0 162.8 2.6165 5.1 1.8 Her X-1
268.4205 -1.5220 6.4 47.8 -144.2 2.3724 1.8 5.2 SW J1753.5-0127
288.7735 10.9514 2.2 55.4 -173.1 10.6052 5.2 1.5 GRS 1915+105
246.7805 69.0673 2.4 37.2 95.3 8.7462 4.8 ------ UNKNOWN
168.2233 50.9137 3.2 49.8 38.8 10.3084 3.7 ------ UNKNOWN
177.0802 36.8473 3.4 45.5 18.7 3.9749 3.4 ------ UNKNOWN
183.0358 10.7671 3.1 50.8 -16.6 4.4050 3.7 ------ UNKNOWN
245.2396 0.9117 3.9 33.8 -115.2 2.7414 3.0 ------ UNKNOWN
Plot creation:
Sun Nov 16 03:46:50 EST 2014