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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
215.4105 -61.5839 0.0323 0.0 -173.6 0.1878 6.0 TRIG_00584155
------------------------------------------
Foreground time interval of the image:
0.000 8.192 (delta_t = 8.192 [sec])
Background time interval of the image:
-239.200 -27.200 (delta_t = 212.000 [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 8.192000
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 8.192000
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 8.192000
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 0.000 sec. to 8.192 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 4.22547 ( -0.791251 1.02778 )
Norm@50keV : 2.42627E-04 ( -0.000243017 0.000287763 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.16 using 59 PHA bins.
# Reduced chi-squared = 1.196 for 57 degrees of freedom
# Null hypothesis probability = 1.479694e-01
Photon flux (15-150 keV) in 8.192 sec: 0.182684 ( -0.0454928 0.0463787 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.18505e-08 ( -1.53283e-08 1.77326e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.78785E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 101.95 using 59 PHA bins.
# Reduced chi-squared = 1.8205 for 56 degrees of freedom
# Null hypothesis probability = 1.714877e-04
Photon flux (15-150 keV) in 8.192 sec: 0.187215 ( -0.042363 0.042804 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.82536e-08 ( -1.1917e-08 1.2979e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.04902 ( 1.70225 1.70225 )
beta : -10.0000 ( 9.99824 0.0100452 )
Epeak [keV] : 15.3652 ( -3.44937 16.8003 )
Norm@50keV : 1622.65 ( -1619.96 6788.86 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.86 using 59 PHA bins.
# Reduced chi-squared = 1.179 for 55 degrees of freedom
# Null hypothesis probability = 1.706641e-01
Photon flux (15-150 keV) in 8.192 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] : 3.42480 (-0.674795 0.799166)
R^2/D10^2 : 11.9559 (-11.9559 31.3567)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.00 using 59 PHA bins.
# Reduced chi-squared = 1.140 for 57 degrees of freedom
# Null hypothesis probability = 2.180778e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.983e-08 2.273e-08
25- 50 9.018e-09 5.820e-09
50-150 3.968e-11 4.325e-11
15-150 4.889e-08 2.868e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.60585 (-2.37292 3.71126)
Norm : 12.0200 (-6.84601 20.6495)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.01 using 59 PHA bins.
# Reduced chi-squared = 1.158 for 57 degrees of freedom
# Null hypothesis probability = 1.935062e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.802e-08 2.174e-08
25- 50 1.088e-08 6.996e-09
50-150 3.235e-10 3.847e-10
15-150 4.922e-08 2.810e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.42076 (-0.682994 0.78389)
R1^2/D10^2 : 12.0005 (-12.0115 29.9647)
kT2 [keV] : 199.355 (-199.363 -199.363)
R2^2/D10^2 : 4.77401E-06 (-4.8828e-06 -4.8828e-06)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.74 using 59 PHA bins.
# Reduced chi-squared = 1.177 for 55 degrees of freedom
# Null hypothesis probability = 1.731934e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.977e-08 2.281e-08
25- 50 9.384e-09 5.755e-09
50-150 1.039e-08 4.293e-11
15-150 5.955e-08 2.911e-08
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 4.22547 ( -0.791251 1.02778 )
Norm@50keV : 2.42627E-04 ( -0.000243017 0.000287763 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.16 using 59 PHA bins.
# Reduced chi-squared = 1.196 for 57 degrees of freedom
# Null hypothesis probability = 1.479694e-01
Photon flux (15-150 keV) in 8.192 sec: 0.182684 ( -0.0454928 0.0463787 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.18505e-08 ( -1.53283e-08 1.77326e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.78785E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 101.95 using 59 PHA bins.
# Reduced chi-squared = 1.8205 for 56 degrees of freedom
# Null hypothesis probability = 1.714877e-04
Photon flux (15-150 keV) in 8.192 sec: 0.187215 ( -0.042363 0.042804 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.82536e-08 ( -1.1917e-08 1.2979e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.04902 ( 1.70225 1.70225 )
beta : -10.0000 ( 9.99824 0.0100452 )
Epeak [keV] : 15.3652 ( -3.44937 16.8003 )
Norm@50keV : 1622.65 ( -1619.96 6786.51 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.86 using 59 PHA bins.
# Reduced chi-squared = 1.179 for 55 degrees of freedom
# Null hypothesis probability = 1.706641e-01
Photon flux (15-150 keV) in 8.192 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] : 3.42480 (-0.674795 0.799166)
R^2/D10^2 : 11.9559 (-11.9559 31.3567)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.00 using 59 PHA bins.
# Reduced chi-squared = 1.140 for 57 degrees of freedom
# Null hypothesis probability = 2.180778e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.983e-08 2.285e-08
25- 50 9.018e-09 5.951e-09
50-150 3.968e-11 4.243e-11
15-150 4.889e-08 2.759e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.60585 (-2.37292 3.71126)
Norm : 12.0200 (-6.84601 20.6495)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.01 using 59 PHA bins.
# Reduced chi-squared = 1.158 for 57 degrees of freedom
# Null hypothesis probability = 1.935062e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.802e-08 2.145e-08
25- 50 1.088e-08 7.094e-09
50-150 3.235e-10 3.464e-10
15-150 4.922e-08 2.813e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.42076 (-0.682994 0.78389)
R1^2/D10^2 : 12.0005 (-12.0115 29.9649)
kT2 [keV] : 199.355 (-199.363 -199.363)
R2^2/D10^2 : 4.77401E-06 (-4.8828e-06 -4.8828e-06)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.74 using 59 PHA bins.
# Reduced chi-squared = 1.177 for 55 degrees of freedom
# Null hypothesis probability = 1.731934e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.977e-08 2.245e-08
25- 50 9.384e-09 5.718e-09
50-150 1.039e-08 5.128e-11
15-150 5.955e-08 2.782e-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: 4.22547 ( -0.791251 1.02778 )
Norm@50keV : 2.42627E-04 ( -0.000243017 0.000287763 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.16 using 59 PHA bins.
# Reduced chi-squared = 1.196 for 57 degrees of freedom
# Null hypothesis probability = 1.479694e-01
Photon flux (15-150 keV) in 8.192 sec: 0.182684 ( -0.0454928 0.0463787 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.18505e-08 ( -1.53283e-08 1.77326e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.78785E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 101.95 using 59 PHA bins.
# Reduced chi-squared = 1.8205 for 56 degrees of freedom
# Null hypothesis probability = 1.714877e-04
Photon flux (15-150 keV) in 8.192 sec: 0.187215 ( -0.042363 0.042804 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.82536e-08 ( -1.1917e-08 1.2979e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.04902 ( 1.70225 1.70225 )
beta : -10.0000 ( 9.99824 0.0100452 )
Epeak [keV] : 15.3652 ( -3.44937 16.8003 )
Norm@50keV : 1622.65 ( -1619.96 6786.47 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.86 using 59 PHA bins.
# Reduced chi-squared = 1.179 for 55 degrees of freedom
# Null hypothesis probability = 1.706641e-01
Photon flux (15-150 keV) in 8.192 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) = 1.3164e-08
S(50-100 keV) = 2.81804e-09
T90 vs. Hardness ratio plot
T90 = 8.19200003147125 sec.
Hardness ratio (energy fluence ratio) = 0.214072
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.132766
Count Ratio (50-100 keV) / (15-25 keV) = -0.00605179
Mask shadow pattern
IMX = -6.924381378664515E-04, IMY = 7.771820652658479E-05
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
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:
-239.200000 -27.200000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.4491 -60.7485 68.6 21.2 63.3 -0.0386 -0.2 8.5 Cen X-3
186.3618 -62.7264 6.9 13.5 63.5 0.3190 1.7 8.5 GX 301-2
244.9567 -15.6424 1.1 50.6 -151.0 5.7479 10.6 1.3 Sco X-1
255.9865 -37.8442 55.4 34.4 -123.7 -0.0645 -0.2 0.0 4U 1700-377
256.4355 -36.4234 144.3 35.8 -124.5 0.0274 0.1 0.0 GX 349+2
264.8492 -44.2989 6.0 33.3 -107.1 -0.6640 -1.9 10.1 4U 1735-44
263.0920 -33.8951 10.6 40.9 -119.2 0.5922 1.1 6.3 GX 354-0
196.0647 -13.4372 2.3 50.2 146.2 4.7813 4.9 ------ UNKNOWN
108.1746 -57.3546 2.3 48.3 34.6 3.7962 5.0 ------ UNKNOWN
212.3029 -39.0469 3.2 22.7 164.8 0.7269 3.6 ------ UNKNOWN
222.1171 -4.8437 3.2 57.0 179.0 4.4698 3.6 ------ UNKNOWN
55.3863 -83.0365 2.9 35.0 -4.9 0.9922 3.9 ------ UNKNOWN
235.1021 -5.7879 2.3 57.7 -165.6 4.9722 4.9 ------ UNKNOWN
266.9492 -32.4729 2.8 43.8 -116.3 3.7916 4.1 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 8.192000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.5028 -60.7398 4.9 21.2 63.3 0.0902 2.4 8.9 Cen X-3
187.0266 -62.7097 3.0 13.2 63.8 0.1333 3.8 10.8 GX 301-2
244.9711 -15.7796 4.5 50.4 -151.0 -0.2293 -2.6 8.4 Sco X-1
256.1219 -37.7420 17.3 34.6 -123.6 -0.0339 -0.7 8.9 4U 1700-377
256.6865 -36.4967 0.0 35.9 -124.1 -0.0458 -0.8 12.9 GX 349+2
264.6018 -44.3593 2.3 33.2 -107.3 -0.2730 -4.9 8.1 4U 1735-44
262.7448 -33.7896 7.5 40.8 -119.7 0.1187 1.5 12.5 GX 354-0
215.4105 -61.5839 1.9 0.0 -173.6 0.1878 6.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
Plot creation:
Sun Jan 19 08:55:44 EST 2014