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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
270.8126 +21.3689 0.0389 22.5 147.9 0.4778 5.0 TRIG_00552142
------------------------------------------
Foreground time interval of the image:
0.000 36.560 (delta_t = 36.560 [sec])
38.000 64.000 (delta_t = 26.000 [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)
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
Multiple GTIs in the spectrum
tstart tstop
0.000000 36.560000
38.000000 64.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.71438 ( -0.513556 0.636908 )
Norm@50keV : 3.05372E-04 ( -0.000142846 0.000155224 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.19 using 59 PHA bins.
# Reduced chi-squared = 1.126 for 57 degrees of freedom
# Null hypothesis probability = 2.392309e-01
Photon flux (15-150 keV) in 62.56 sec: 6.87781E-02 ( -0.0187014 0.0188464 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.03838e-07 ( -6.70374e-08 7.47567e-08 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 36.560000
38.000000 64.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -4.58766 ( 3.27152 3.64157 )
Epeak [keV] : 26.3569 ( -5.01934 4.82587 )
Norm@50keV : 39.5723 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.04 using 59 PHA bins.
# Reduced chi-squared = 1.001 for 56 degrees of freedom
# Null hypothesis probability = 4.733683e-01
Photon flux (15-150 keV) in 62.56 sec: 6.88812E-02 ( -0.0176396 0.0177343 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.77075e-07 ( -4.77377e-08 5.07681e-08 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 36.560000
38.000000 64.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.48264 ( -4.46907 -4.48264 )
beta : -9.37167 ( 9.37167 19.303 )
Epeak [keV] : 26.2998 ( -4.00315 4.54606 )
Norm@50keV : 33.8315 ( -8.24515 189.781 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.04 using 59 PHA bins.
# Reduced chi-squared = 1.019 for 55 degrees of freedom
# Null hypothesis probability = 4.355285e-01
Photon flux (15-150 keV) in 62.56 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] : 6.44645 (-1.23738 1.46665)
R^2/D10^2 : 0.209495 (-0.123495 0.309951)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.76 using 59 PHA bins.
# Reduced chi-squared = 0.9957 for 57 degrees of freedom
# Null hypothesis probability = 4.841735e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.966e-08 4.654e-08
25- 50 9.251e-08 5.295e-08
50-150 1.127e-08 9.359e-09
15-150 1.834e-07 9.754e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 22.6595 (-8.36633 15.6857)
Norm : 0.759132 (-0.318986 0.591406)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.54 using 59 PHA bins.
# Reduced chi-squared = 1.062 for 57 degrees of freedom
# Null hypothesis probability = 3.493144e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.128e-08 3.097e-08
25- 50 7.801e-08 4.078e-08
50-150 2.859e-08 2.437e-08
15-150 1.879e-07 9.120e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.809897 (-6.43068 72.6382)
R1^2/D10^2 : 7.00231E+04 ( )
kT2 [keV] : 6.46412 (-1.25238 1.58082)
R2^2/D10^2 : 0.206307 (-0.119783 0.311948)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.76 using 59 PHA bins.
#Fit statistic : Chi-Squared = 56.74 using 59 PHA bins.
# Reduced chi-squared = 1.032 for 55 degrees of freedom
# Reduced chi-squared = 1.032 for 55 degrees of freedom
# Null hypothesis probability = 4.093533e-01
# Null hypothesis probability = 4.098853e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.966e-08 1.044e+00
25- 50 9.251e-08 9.009e+00
50-150 1.127e-08 2.270e+02
15-150 1.834e-07 2.066e+02
Peak spectrum fit
Power-law model
Time interval is from 38.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.71438 ( -0.513556 0.636908 )
Norm@50keV : 3.05372E-04 ( -0.000142846 0.000155224 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.19 using 59 PHA bins.
# Reduced chi-squared = 1.126 for 57 degrees of freedom
# Null hypothesis probability = 2.392309e-01
Photon flux (15-150 keV) in 62.56 sec: 6.87781E-02 ( -0.0187014 0.0188464 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.03838e-07 ( -6.70374e-08 7.47567e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 38.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -4.58766 ( 3.27152 3.64157 )
Epeak [keV] : 26.3569 ( -5.01934 4.82587 )
Norm@50keV : 39.5723 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.04 using 59 PHA bins.
# Reduced chi-squared = 1.001 for 56 degrees of freedom
# Null hypothesis probability = 4.733683e-01
Photon flux (15-150 keV) in 62.56 sec: 6.88812E-02 ( -0.0176396 0.0177343 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.77075e-07 ( -4.77377e-08 5.07681e-08 ) ergs/cm2
Band function
Time interval is from 38.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.48264 ( -4.46907 -4.48264 )
beta : -9.37167 ( 9.37167 19.303 )
Epeak [keV] : 26.2998 ( -4.00315 4.54606 )
Norm@50keV : 33.8315 ( -8.24515 189.781 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.04 using 59 PHA bins.
# Reduced chi-squared = 1.019 for 55 degrees of freedom
# Null hypothesis probability = 4.355285e-01
Photon flux (15-150 keV) in 62.56 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] : 6.44645 (-1.23738 1.46665)
R^2/D10^2 : 0.209495 (-0.123495 0.309951)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.76 using 59 PHA bins.
# Reduced chi-squared = 0.9957 for 57 degrees of freedom
# Null hypothesis probability = 4.841735e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.966e-08 4.121e-08
25- 50 9.251e-08 5.824e-08
50-150 1.127e-08 9.097e-09
15-150 1.834e-07 1.117e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 22.6595 (-8.36633 15.6857)
Norm : 0.759132 (-0.318986 0.591406)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.54 using 59 PHA bins.
# Reduced chi-squared = 1.062 for 57 degrees of freedom
# Null hypothesis probability = 3.493144e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.128e-08 3.726e-08
25- 50 7.801e-08 4.614e-08
50-150 2.859e-08 2.366e-08
15-150 1.879e-07 8.795e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.809897 (-6.43068 72.6382)
R1^2/D10^2 : 7.00231E+04 ( )
kT2 [keV] : 6.46412 (-1.25238 1.58082)
R2^2/D10^2 : 0.206307 (-0.119783 0.311948)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.76 using 59 PHA bins.
#Fit statistic : Chi-Squared = 56.74 using 59 PHA bins.
# Reduced chi-squared = 1.032 for 55 degrees of freedom
# Reduced chi-squared = 1.032 for 55 degrees of freedom
# Null hypothesis probability = 4.093533e-01
# Null hypothesis probability = 4.098853e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.966e-08 1.067e+00
25- 50 9.251e-08 8.727e+00
50-150 1.127e-08 2.457e+02
15-150 1.834e-07 2.168e+02
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: 2.71438 ( -0.513556 0.636908 )
Norm@50keV : 3.05372E-04 ( -0.000142846 0.000155224 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.19 using 59 PHA bins.
# Reduced chi-squared = 1.126 for 57 degrees of freedom
# Null hypothesis probability = 2.392309e-01
Photon flux (15-150 keV) in 62.56 sec: 6.87781E-02 ( -0.0187014 0.0188464 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.03838e-07 ( -6.70374e-08 7.47567e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -4.58766 ( 3.27152 3.64157 )
Epeak [keV] : 26.3569 ( -5.01934 4.82587 )
Norm@50keV : 39.5723 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.04 using 59 PHA bins.
# Reduced chi-squared = 1.001 for 56 degrees of freedom
# Null hypothesis probability = 4.733683e-01
Photon flux (15-150 keV) in 62.56 sec: 6.88812E-02 ( -0.0176396 0.0177343 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.77075e-07 ( -4.77377e-08 5.07681e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.48264 ( -4.46907 -4.48264 )
beta : -9.37167 ( 9.37167 19.303 )
Epeak [keV] : 26.2998 ( -4.00315 4.54606 )
Norm@50keV : 33.8315 ( -8.24515 189.781 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.04 using 59 PHA bins.
# Reduced chi-squared = 1.019 for 55 degrees of freedom
# Null hypothesis probability = 4.355285e-01
Photon flux (15-150 keV) in 62.56 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) = 6.84932e-08
S(50-100 keV) = 4.15909e-08
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.607227
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.10747
Count Ratio (50-100 keV) / (15-25 keV) = -0.235438
Mask shadow pattern
IMX = -3.518929378322020E-01, IMY = -2.203414690552106E-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 36.560000
38.000000 64.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.3231 35.3972 4.2 42.6 145.6 0.6704 2.8 7.4 Her X-1
256.1338 -37.8392 3.3 48.6 32.7 1.2076 3.5 7.0 4U 1700-377
256.6006 -36.5850 17.3 47.4 33.3 -0.2046 -0.7 12.6 GX 349+2
263.0421 -24.7353 7.1 34.7 38.3 0.2395 1.6 1.9 GX 1+4
264.6646 -44.5816 3.9 50.8 20.8 -1.0667 -3.0 8.6 4U 1735-44
268.3252 -1.4192 36.5 16.7 77.3 0.0329 0.3 3.3 SW J1753.5-0127
270.1819 -25.0177 4.9 31.3 28.1 0.2793 2.3 6.7 GX 5-1
270.2498 -25.8447 3.8 32.0 27.3 0.3565 3.0 6.7 GRS 1758-258
274.0260 -13.9954 4.9 20.0 33.6 0.2163 2.4 2.7 GX 17+2
276.0614 -30.2406 12.0 34.3 15.6 0.1248 1.0 10.4 H1820-303
285.1366 -25.0663 4.3 28.2 1.3 0.2827 2.7 10.3 HT1900.1-2455
288.8007 10.9525 1.1 9.0 -148.4 0.9426 10.4 0.4 GRS 1915+105
299.6412 35.3010 8.6 35.2 -155.4 0.1604 1.3 6.5 Cyg X-1
308.0143 40.9422 4.5 43.4 -151.1 0.4183 2.5 4.4 Cyg X-3
263.1523 -34.0025 0.0 42.2 29.3 0.3522 1.7 12.9 GX 354-0
250.5490 -1.1260 2.4 34.1 86.1 0.9668 4.7 ------ UNKNOWN
286.8001 13.1896 2.1 10.4 -164.2 0.4756 5.6 ------ UNKNOWN
285.7247 45.6070 2.9 42.5 -175.9 0.6341 3.9 ------ UNKNOWN
325.2371 -29.4364 2.8 50.8 -44.5 1.7801 4.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
116.800590 671.780400
673.000000 963.063100
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9894 -15.6369 0.9 44.8 41.7 21.8711 12.9 0.6 Sco X-1
254.4115 35.4126 31.6 20.1 143.3 -0.2090 -0.4 4.8 Her X-1
263.0400 -24.8900 3.9 46.8 14.9 -3.9492 -3.0 8.8 GX 1+4
268.3823 -1.3537 4.4 22.8 11.4 1.2324 2.6 6.0 SW J1753.5-0127
270.4007 -25.0833 3.9 46.4 5.7 2.9634 3.0 6.3 GX 5-1
270.3637 -25.5899 10.4 46.9 5.7 -1.1079 -1.1 9.8 GRS 1758-258
274.0435 -14.0223 2.3 35.5 -0.2 3.7207 5.0 2.3 GX 17+2
275.8782 -30.4660 14.4 52.0 -0.3 1.1357 0.8 6.4 H1820-303
285.0193 -24.8897 14.4 48.2 -12.2 0.7775 0.8 2.1 HT1900.1-2455
288.7865 10.9481 0.5 20.2 -56.6 13.4096 23.7 0.7 GRS 1915+105
299.6140 35.2903 4.4 28.8 -120.0 1.9057 2.6 5.4 Cyg X-1
308.0972 40.9346 1.3 37.1 -125.3 8.2902 8.7 1.2 Cyg X-3
232.7119 12.4133 3.4 37.4 87.7 5.8606 3.4 ------ UNKNOWN
245.0294 68.6444 3.3 49.9 173.3 4.4948 3.5 ------ UNKNOWN
277.3218 -23.8370 2.4 45.6 -3.2 4.6984 4.7 ------ UNKNOWN
277.1164 -17.8593 3.6 39.7 -4.2 2.3840 3.3 ------ UNKNOWN
285.9306 50.2596 3.4 31.3 -156.0 1.9665 3.4 ------ UNKNOWN
321.9581 72.9756 4.2 58.8 -159.3 13.3550 2.8 ------ UNKNOWN
Plot creation:
Thu Mar 28 20:51:10 EDT 2013