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Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
260.6679 -2.9594 0.0098 40.9677 -5.5978 1.8692644 19.820 TRIG_00563213
Foreground time interval of the image:
-3.964 25.053 (delta_t = 29.017 [sec])
Background time interval of the image:
-239.048 -3.964 (delta_t = 235.084 [sec])
Lightcurves
Notes:
- 1) The mask-weighted light curves are using the flight position.
- 2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 3) 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.
- 4) 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.
- 5) 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 2.048000
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 2.048000
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 2.048000
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
Quad-rate summed light curves (from T0-300s to T0+1000s)
Spectral Evolution
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using 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.
Time averaged spectrum fit using the average DRM
Power-law model
Time interval is from -3.964 sec. to 252.992 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.45494 ( -0.0375241 0.03739 )
Norm@50keV : 5.29043E-03 ( -0.000101425 0.000101333 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.07 using 59 PHA bins.
# Reduced chi-squared = 0.6504 for 57 degrees of freedom
# Null hypothesis probability = 9.811693e-01
Photon flux (15-150 keV) in 257 sec: 0.652774 ( -0.0147735 0.0148372 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.2999e-05 ( -2.49988e-07 2.50121e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -3.964 sec. to 252.992 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.41895 ( -0.149039 0.0381052 )
Epeak [keV] : 948.518 ( -9998.72 -9998.72 )
Norm@50keV : 5.48192E-03 ( -0.000100332 0.000784003 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.24 using 59 PHA bins.
# Reduced chi-squared = 0.6650 for 56 degrees of freedom
# Null hypothesis probability = 9.748086e-01
Photon flux (15-150 keV) in 257 sec: 0.652536 ( -0.014933 0.014478 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.30009e-05 ( -2.46848e-07 2.48108e-07 ) ergs/cm2
Band function
Time interval is from -3.964 sec. to 252.992 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.224802 ( 0.726972 5.47606 )
beta : -1.47077 ( -0.0481199 0.0429623 )
Epeak [keV] : 39.9970 ( -40.0077 138.828 )
Norm@50keV : 3.79554E-02 ( -0.0380487 448.876 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 35.26 using 59 PHA bins.
# Reduced chi-squared = 0.6412 for 55 degrees of freedom
# Null hypothesis probability = 9.823316e-01
Photon flux (15-150 keV) in 257 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] : 18.7761 ( )
R^2/D10^2 : 3.26236E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 643.45 using 59 PHA bins.
# Reduced chi-squared = 11.289 for 57 degrees of freedom
# Null hypothesis probability = 3.255153e-100
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.835e-07 2.454e-08
25- 50 2.783e-06 8.481e-08
50-150 7.193e-06 2.249e-07
15-150 1.056e-05 2.236e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 2.72381 (-0.0516714 0.0516513)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 93.34 using 59 PHA bins.
# Reduced chi-squared = 1.638 for 57 degrees of freedom
# Null hypothesis probability = 1.705287e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.744e-06 3.572e-08
25- 50 3.354e-06 7.967e-08
50-150 7.356e-06 1.645e-07
15-150 1.245e-05 2.853e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.84972 (-0.542664 0.574927)
R1^2/D10^2 : 0.444612 (-0.0969592 0.130526)
kT2 [keV] : 31.6432 (-2.17621 2.6644)
R2^2/D10^2 : 4.55136E-03 (-0.00108896 0.00127838)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.47 using 59 PHA bins.
# Reduced chi-squared = 0.7539 for 55 degrees of freedom
# Null hypothesis probability = 9.114498e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.432e-06 9.136e-08
25- 50 3.241e-06 1.298e-07
50-150 8.244e-06 3.842e-07
15-150 1.292e-05 4.369e-07
Peak spectrum fit
Power-law model
Time interval is from 70.284 sec. to 71.284 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.27881 ( -0.0651605 0.0650816 )
Norm@50keV : 4.88687E-02 ( -0.00176993 0.00176991 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.08 using 59 PHA bins.
# Reduced chi-squared = 1.037 for 57 degrees of freedom
# Null hypothesis probability = 3.993596e-01
Photon flux (15-150 keV) in 1 sec: 5.80802 ( -0.219175 0.219456 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.85456e-07 ( -1.94096e-08 1.94654e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 70.284 sec. to 71.284 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.923964 ( -0.27143 0.255676 )
Epeak [keV] : 165.394 ( -48.9833 257.163 )
Norm@50keV : 7.15007E-02 ( -0.016732 0.0233867 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.34 using 59 PHA bins.
# Reduced chi-squared = 0.9525 for 56 degrees of freedom
# Null hypothesis probability = 5.762663e-01
Photon flux (15-150 keV) in 1 sec: 5.69927 ( -0.23154 0.23176 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.74904e-07 ( -2.1187e-08 2.1081e-08 ) ergs/cm2
Band function
Time interval is from 70.284 sec. to 71.284 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.787012 ( -1.82526 3.28991 )
beta : -1.39274 ( -0.109169 0.0973079 )
Epeak [keV] : 44.0624 ( -10.8677 76.4162 )
Norm@50keV : 1.01117 ( -1.00755 395.077 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.61 using 59 PHA bins.
# Reduced chi-squared = 0.9203 for 55 degrees of freedom
# Null hypothesis probability = 6.427097e-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] : 18.0695 ( )
R^2/D10^2 : 0.363426 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 182.37 using 59 PHA bins.
# Reduced chi-squared = 3.1995 for 57 degrees of freedom
# Null hypothesis probability = 4.904997e-15
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.373e-08 1.850e-09
25- 50 1.100e-07 5.550e-09
50-150 2.611e-07 1.830e-08
15-150 3.949e-07 1.830e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 24.1961 (-0.886435 0.88621)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 104.81 using 59 PHA bins.
# Reduced chi-squared = 1.8389 for 57 degrees of freedom
# Null hypothesis probability = 1.177768e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.024e-08 2.470e-09
25- 50 1.159e-07 4.550e-09
50-150 2.541e-07 9.500e-09
15-150 4.303e-07 1.710e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.39706 (-1.15759 1.27854)
R1^2/D10^2 : 2.77138 (-0.939849 1.61159)
kT2 [keV] : 31.2913 (-4.17127 6.47925)
R2^2/D10^2 : 4.70054E-02 (-0.0219057 0.0308042)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.79 using 59 PHA bins.
# Reduced chi-squared = 0.9235 for 55 degrees of freedom
# Null hypothesis probability = 6.359479e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.356e-08 5.775e-09
25- 50 1.135e-07 1.139e-08
50-150 3.203e-07 4.960e-08
15-150 4.774e-07 5.535e-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: 1.78556 ( -0.147942 0.150787 )
Norm@50keV : 3.85329E-03 ( -0.00034177 0.000338401 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.87 using 59 PHA bins.
# Reduced chi-squared = 0.9451 for 57 degrees of freedom
# Null hypothesis probability = 5.932141e-01
Photon flux (15-150 keV) in 29.02 sec: 0.528033 ( -0.0453003 0.0454102 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.03002e-06 ( -9.30265e-08 9.36516e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.60667 ( -0.607864 0.554948 )
Epeak [keV] : 105.153 ( -73.5078 -105.169 )
Norm@50keV : 4.78455E-03 ( -0.00185322 0.0050392 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.56 using 59 PHA bins.
# Reduced chi-squared = 0.9565 for 56 degrees of freedom
# Null hypothesis probability = 5.676750e-01
Photon flux (15-150 keV) in 29.02 sec: 0.523552 ( -0.04725 0.047194 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.01627e-06 ( -1.03221e-07 1.02165e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.93533 ( -4.93533 -4.93533 )
beta : -1.86465 ( -0.177629 0.167635 )
Epeak [keV] : 22.9484 ( -7.69106 4.28151 )
Norm@50keV : 797.441 ( -65.3917 3.01341e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.87 using 59 PHA bins.
# Reduced chi-squared = 0.9431 for 55 degrees of freedom
# Null hypothesis probability = 5.950045e-01
Photon flux (15-150 keV) in 29.02 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.01468e-06 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 3.14e-06
S(50-100 keV) = 4.59e-06
T90 vs. Hardness ratio plot
T90 = 98.3679999709129 sec.
Hardness ratio (energy fluence ratio) = 1.46178
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.40962
Count Ratio (50-100 keV) / (15-25 keV) = 1.11706
Mask shadow pattern
IMX = 8.641568649219036E-01, IMY = 8.469734488087770E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
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:
-239.048000 -3.964000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9758 -15.6324 0.5 40.9 -36.3 6.5018 21.2 0.5 Sco X-1
255.9856 -37.8617 0.8 22.1 -67.0 2.9065 14.1 1.1 4U 1700-377
256.3889 -36.4083 2.9 22.0 -63.1 0.8146 4.0 2.4 GX 349+2
263.1302 -24.7848 4.8 22.1 -28.1 0.4104 2.4 7.0 GX 1+4
264.6069 -44.6313 15.9 16.1 -89.4 0.1375 0.7 12.3 4U 1735-44
268.2191 -1.4203 4.5 39.3 6.1 0.7598 2.6 9.1 SW J1753.5-0127
270.1316 -25.1217 5.7 17.4 -15.2 -0.3867 -2.1 8.7 GX 5-1
270.2465 -25.6698 3.7 16.9 -16.2 0.6799 3.5 5.3 GRS 1758-258
274.0083 -14.0332 1.7 25.5 8.4 1.4211 6.8 0.2 GX 17+2
275.8485 -30.2325 6.0 10.2 -12.5 0.3550 1.9 9.0 H1820-303
284.8084 -24.8722 0.0 13.0 34.6 0.1801 1.0 12.7 HT1900.1-2455
262.9167 -33.8498 3.2 17.6 -51.5 0.6577 3.6 3.7 GX 354-0
308.7229 -27.8568 2.8 22.9 103.0 1.1122 4.2 ------ UNKNOWN
277.4495 -23.8265 1.8 15.1 7.8 1.1430 6.2 ------ UNKNOWN
265.5669 -33.2941 2.8 15.7 -47.0 0.7162 4.1 ------ UNKNOWN
25.8835 -72.4145 2.5 57.6 -168.9 4.0018 4.5 ------ UNKNOWN
244.3900 -42.2195 2.9 30.4 -79.2 1.1382 4.0 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-3.964000 25.052590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8641 -15.8288 0.0 40.9 -36.6 -0.0411 -0.4 13.1 Sco X-1
255.8213 -37.9410 4.8 22.2 -67.3 -0.1550 -2.4 9.7 4U 1700-377
256.3935 -36.2856 8.5 22.1 -62.8 0.0856 1.4 8.5 GX 349+2
262.9164 -24.9394 0.0 22.1 -28.7 -0.0402 -0.7 12.7 GX 1+4
264.7419 -44.4483 83.1 15.9 -88.8 0.0084 0.1 0.1 4U 1735-44
268.2070 -1.3973 6.9 39.3 6.1 -0.1599 -1.7 10.2 SW J1753.5-0127
270.2134 -25.0900 10.5 17.4 -15.0 0.0626 1.1 3.9 GX 5-1
270.0912 -25.6667 0.0 17.0 -16.5 0.0068 0.1 12.3 GRS 1758-258
274.0514 -13.9905 14.9 25.5 8.5 0.0488 0.8 3.8 GX 17+2
275.8483 -30.3144 45.9 10.2 -12.8 -0.0141 -0.3 5.1 H1820-303
284.9858 -25.1220 4.1 12.8 35.4 -0.1509 -2.8 12.4 HT1900.1-2455
262.9334 -33.8298 13.0 17.6 -51.5 0.0523 0.9 2.8 GX 354-0
260.6679 -2.9594 0.6 41.0 -5.6 1.8690 19.8 ------ UNKNOWN
267.3147 -56.3693 2.2 21.6 -122.6 0.3374 5.4 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
99.052600 426.152590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9728 -15.6320 0.3 20.0 -156.6 9.6755 33.1 0.6 Sco X-1
254.6288 35.4443 8.2 38.8 -34.2 0.6566 1.4 10.4 Her X-1
255.9973 -37.8580 1.4 35.1 160.1 3.5576 8.2 1.0 4U 1700-377
256.4541 -36.4177 2.9 33.7 159.8 1.6205 4.0 1.0 GX 349+2
262.9867 -24.7463 3.2 21.9 148.1 1.0859 3.6 1.2 GX 1+4
265.0039 -44.3856 7.2 41.6 149.0 1.0346 1.6 11.8 4U 1735-44
268.3218 -1.4366 3.4 7.8 52.4 0.8842 3.4 2.9 SW J1753.5-0127
270.1971 -24.9136 7.3 23.8 131.9 -0.4751 -1.6 11.0 GX 5-1
270.4384 -25.8201 4.0 24.7 132.3 0.8812 2.9 8.7 GRS 1758-258
274.0405 -14.0052 1.4 17.2 104.4 2.4068 8.0 2.8 GX 17+2
275.7919 -30.3889 58.3 30.9 127.7 0.0800 0.2 7.0 H1820-303
284.8410 -25.0018 110.4 32.0 109.3 -0.0620 -0.1 11.7 HT1900.1-2455
288.8160 10.9445 1.1 31.3 36.8 4.4799 10.9 1.0 GRS 1915+105
299.5932 35.3960 14.0 52.9 13.6 1.2335 0.8 11.7 Cyg X-1
262.9090 -33.7511 6.0 30.8 150.1 0.7093 1.9 6.4 GX 354-0
242.3874 46.4172 3.1 52.0 -42.3 7.1556 3.7 ------ UNKNOWN
213.6549 -9.9423 2.7 47.2 -127.1 6.6595 4.2 ------ UNKNOWN
217.3704 -0.4639 3.3 43.4 -113.8 5.2752 3.5 ------ UNKNOWN
Plot creation:
Sat May 30 16:07:39 EDT 2015