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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
268.6824 -26.3286 0.0299 4.9 134.5 0.8330 6.4 TRIG_00559221
------------------------------------------
Foreground time interval of the image:
-19.899 72.501 (delta_t = 92.400 [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)
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 -121.064 sec. to 666.148 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 4.32718 ( -0.569753 0.649333 )
Norm@50keV : 4.83583E-05 ( -2.34907e-05 3.38406e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.02 using 59 PHA bins.
# Reduced chi-squared = 1.088 for 57 degrees of freedom
# Null hypothesis probability = 3.018596e-01
Photon flux (15-150 keV) in 787.2 sec: 3.98906E-02 ( -0.0059763 0.00598477 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.07426e-06 ( -1.85236e-07 1.96125e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -121.064 sec. to 666.148 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 5.31627E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 132.20 using 59 PHA bins.
# Reduced chi-squared = 2.3608 for 56 degrees of freedom
# Null hypothesis probability = 4.190883e-08
Photon flux (15-150 keV) in 787.2 sec: 3.93471E-02 ( -0.0058424 0.0057942 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.0036e-06 ( -1.6469e-07 2.37404e-07 ) ergs/cm2
Band function
Time interval is from -121.064 sec. to 666.148 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.22113 ( 8.22113 8.22113 )
beta : -4.32719 ( -0.649224 0.569486 )
Epeak [keV] : 3.02898 ( -3.02898 -3.02898 )
Norm@50keV : 6.57252E-03 ( -0.00319265 0.00459947 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.02 using 59 PHA bins.
# Reduced chi-squared = 1.128 for 55 degrees of freedom
# Null hypothesis probability = 2.401705e-01
Photon flux (15-150 keV) in 787.2 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] : 3.30828 (-0.479651 0.574578)
R^2/D10^2 : 3.02732 (-1.84395 5.04278)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.57 using 59 PHA bins.
# Reduced chi-squared = 1.098 for 57 degrees of freedom
# Null hypothesis probability = 2.851976e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.977e-07 3.367e-07
25- 50 1.616e-07 8.499e-08
50-150 5.541e-10 5.411e-10
15-150 9.600e-07 3.372e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.34413 (-1.66892 2.36922)
Norm : 2.79141 (-1.36447 3.01632)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.35 using 59 PHA bins.
# Reduced chi-squared = 1.076 for 57 degrees of freedom
# Null hypothesis probability = 3.228403e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.809e-07 2.870e-07
25- 50 2.107e-07 9.542e-08
50-150 5.549e-09 4.978e-09
15-150 9.971e-07 3.397e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.21927 (-3.21653 0.579631)
R1^2/D10^2 : 3.50504 (-2.1923 346.453)
kT2 [keV] : 28.7016 (-28.3226 -28.3226)
R2^2/D10^2 : 6.12843E-05 (-6.32899e-05 0.00376758)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.90 using 59 PHA bins.
# Reduced chi-squared = 1.107 for 55 degrees of freedom
# Null hypothesis probability = 2.720682e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.955e-07 3.313e-07
25- 50 1.848e-07 8.289e-08
50-150 2.290e-07 1.675e-07
15-150 1.209e-06 6.216e-07
Peak spectrum fit
Power-law model
Time interval is from -119.708 sec. to -118.708 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.67735 ( -1.6396 1.80201 )
Norm@50keV : 3.26973E-03 ( -0.00326824 0.00201618 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.28 using 59 PHA bins.
# Reduced chi-squared = 0.9172 for 57 degrees of freedom
# Null hypothesis probability = 6.524663e-01
Photon flux (15-150 keV) in 1 sec: 0.430970 ( -0.43097 0.252466 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.03102e-08 ( -2.00602e-08 2.18392e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -119.708 sec. to -118.708 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.10407 ( -4.43511 1.77068 )
Epeak [keV] : 40.5763 ( )
Norm@50keV : 1.88403E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.99 using 59 PHA bins.
# Reduced chi-squared = 0.9284 for 56 degrees of freedom
# Null hypothesis probability = 6.272853e-01
Photon flux (15-150 keV) in 1 sec: 0.434361 ( -0.434361 0.249686 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.99636e-08 ( -1.97573e-08 2.12655e-08 ) ergs/cm2
Band function
Time interval is from -119.708 sec. to -118.708 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.34068 ( 1.34098 1.34098 )
beta : -1.67701 ( 1.67914 1.63963 )
Epeak [keV] : 21.9280 ( -21.9719 -21.9719 )
Norm@50keV : 7.57448E-03 ( -0.00758323 5681.59 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.28 using 59 PHA bins.
# Reduced chi-squared = 0.9505 for 55 degrees of freedom
# Null hypothesis probability = 5.792140e-01
Photon flux (15-150 keV) in 1 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] : 7.72642 (-7.80204 -7.80204)
R^2/D10^2 : 0.485489 (-0.454636 59.5113)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.56 using 59 PHA bins.
# Reduced chi-squared = 0.9572 for 57 degrees of freedom
# Null hypothesis probability = 5.671526e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.101e-09 3.632e-09
25- 50 8.397e-09 6.720e-09
50-150 1.964e-09 2.142e-09
15-150 1.546e-08 1.162e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.332 (-199.348 -199.348)
Norm : 1.69453 (-0.986484 6.60096)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.58 using 59 PHA bins.
# Reduced chi-squared = 0.9225 for 57 degrees of freedom
# Null hypothesis probability = 6.414229e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.220e-09 2.913e-09
25- 50 8.117e-09 5.485e-09
50-150 1.780e-08 1.281e-08
15-150 3.014e-08 2.135e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.45699 (-4.14698 11.0397)
R1^2/D10^2 : 1.79260 (-1.77287 756.206)
kT2 [keV] : 75.0605 (-75.0597 -75.0598)
R2^2/D10^2 : 4.10650E-04 (-0.000400474 0.175584)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.33 using 59 PHA bins.
# Reduced chi-squared = 0.9333 for 55 degrees of freedom
# Null hypothesis probability = 6.156534e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.290e-09 3.751e-09
25- 50 6.329e-09 3.574e-09
50-150 2.402e-08 1.758e-08
15-150 3.664e-08 1.953e-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: 3.00601 ( -0.550985 0.716941 )
Norm@50keV : 2.66247E-04 ( -0.000129414 0.000142009 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 80.78 using 59 PHA bins.
# Reduced chi-squared = 1.417 for 57 degrees of freedom
# Null hypothesis probability = 2.084069e-02
Photon flux (15-150 keV) in 92.4 sec: 7.35386E-02 ( -0.0152371 0.0152658 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.96399e-07 ( -7.96526e-08 8.85052e-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 : 1.36544E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 96.41 using 59 PHA bins.
# Reduced chi-squared = 1.722 for 56 degrees of freedom
# Null hypothesis probability = 6.410211e-04
Photon flux (15-150 keV) in 92.4 sec: 7.34027E-02 ( -0.0151934 0.0076826 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.51259 ( 9.51259 9.51259 )
beta : -3.00600 ( -0.716318 0.550574 )
Epeak [keV] : 2.50132 ( -2.50132 -2.50132 )
Norm@50keV : 3.61870E-02 ( -0.0175895 0.0193008 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 80.78 using 59 PHA bins.
# Reduced chi-squared = 1.469 for 55 degrees of freedom
# Null hypothesis probability = 1.337928e-02
Photon flux (15-150 keV) in 92.4 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) = 2.63243e-07
S(50-100 keV) = 5.24585e-08
T90 vs. Hardness ratio plot
T90 = 652.515999913216 sec.
Hardness ratio (energy fluence ratio) = 0.199278
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.211298
Count Ratio (50-100 keV) / (15-25 keV) = 0.0683003
Mask shadow pattern
IMX = -5.957298810940925E-02, IMY = -6.071927000023764E-02
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:
-19.899380 72.500610
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9609 -15.6544 0.6 20.1 -17.2 2.3491 19.7 1.4 Sco X-1
255.8887 -37.7178 7.3 12.9 -108.8 0.2054 1.6 8.9 4U 1700-377
256.3669 -36.5882 187.9 11.7 -107.6 0.0078 0.1 10.4 GX 349+2
262.7755 -24.7419 0.0 1.7 29.5 -0.2490 -2.1 12.7 GX 1+4
264.5605 -44.5231 105.6 18.1 -138.8 -0.0138 -0.1 9.0 4U 1735-44
268.2946 -1.5001 7.2 25.4 56.0 0.2676 1.6 5.2 SW J1753.5-0127
270.1554 -24.9854 14.7 6.4 122.8 -0.1077 -0.8 9.0 GX 5-1
270.3119 -25.7172 8.3 6.4 129.5 0.1934 1.4 1.6 GRS 1758-258
274.0129 -13.9277 5.6 16.0 85.2 0.2904 2.1 6.5 GX 17+2
275.8190 -30.4022 6.0 11.7 157.0 0.2408 1.9 5.9 H1820-303
284.8769 -24.9927 12.9 19.5 134.8 0.1191 0.9 9.7 HT1900.1-2455
263.2247 -33.8539 9.4 7.4 -135.6 0.1480 1.2 11.8 GX 354-0
268.6825 -26.3286 1.8 4.9 134.5 0.8331 6.4 ------ UNKNOWN
255.2498 -41.6253 1.8 16.6 -114.4 0.8422 6.2 ------ UNKNOWN
221.4520 -53.7672 2.7 41.1 -99.0 2.6551 4.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
117.300620 783.190000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9503 -15.6652 1.9 24.5 -49.7 15.0656 6.2 2.3 Sco X-1
255.7754 -37.7857 95.9 15.9 -120.3 0.2580 0.1 10.6 4U 1700-377
256.2587 -36.3041 12.0 14.6 -117.0 2.1733 1.0 11.1 GX 349+2
263.2073 -24.8231 3.3 5.2 -55.6 6.7635 3.5 11.8 GX 1+4
264.6193 -44.6116 6.5 18.6 -151.4 3.5128 1.8 11.0 4U 1735-44
268.5530 -1.5496 0.0 24.7 19.0 -2.9173 -1.4 12.5 SW J1753.5-0127
270.1231 -25.1171 3.3 1.7 67.4 7.2470 3.6 9.0 GX 5-1
270.2869 -25.7316 3.8 1.5 88.9 6.5600 3.3 1.1 GRS 1758-258
274.2060 -14.1220 0.0 13.2 43.4 -2.2201 -1.1 12.7 GX 17+2
275.8614 -30.2279 8.5 7.4 143.2 -2.6741 -1.4 9.0 H1820-303
284.8826 -24.9764 4.6 14.6 107.9 5.3412 2.5 9.0 HT1900.1-2455
288.9495 10.9597 9.8 42.1 49.8 6.2730 1.2 8.9 GRS 1915+105
263.1044 -33.9616 10.0 9.1 -129.7 -2.2970 -1.2 9.5 GX 354-0
272.9684 -13.2314 2.4 13.6 37.2 10.0293 4.8 ------ UNKNOWN
Plot creation:
Fri Aug 2 16:54:43 EDT 2013