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Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
311.6791 -71.5512 0.0052 41.2100 -24.7505 3.1328278 36.650 TRIG_00673978
Foreground time interval of the image:
-0.296 11.704 (delta_t = 12.000 [sec])
Background time interval of the image:
-183.995 -0.296 (delta_t = 183.699 [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 1.024000
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 1.024000
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 1.024000
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 -0.296 sec. to 11.704 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.47654 ( -0.0763714 0.0762168 )
Norm@50keV : 1.80035E-02 ( -0.000769352 0.000769318 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.17 using 59 PHA bins.
# Reduced chi-squared = 0.9328 for 57 degrees of freedom
# Null hypothesis probability = 6.195570e-01
Photon flux (15-150 keV) in 12 sec: 2.23372 ( -0.10403 0.10433 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.05784e-06 ( -9.25332e-08 9.27144e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.296 sec. to 11.704 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.29073 ( -0.306249 0.221465 )
Epeak [keV] : 205.569 ( -95.7594 -205.572 )
Norm@50keV : 2.20498E-02 ( -0.0045609 0.00848125 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.96 using 59 PHA bins.
# Reduced chi-squared = 0.9279 for 56 degrees of freedom
# Null hypothesis probability = 6.283597e-01
Photon flux (15-150 keV) in 12 sec: 2.21104 ( -0.10937 0.10971 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.03597e-06 ( -9.93175e-08 9.87536e-08 ) ergs/cm2
Band function
Time interval is from -0.296 sec. to 11.704 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.174718 ( -0.917435 3.64711 )
beta : -1.60910 ( -0.166316 0.126143 )
Epeak [keV] : 45.9951 ( -14.9135 56.231 )
Norm@50keV : 0.185420 ( -0.184874 30.3728 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.56 using 59 PHA bins.
# Reduced chi-squared = 0.8465 for 55 degrees of freedom
# Null hypothesis probability = 7.840644e-01
Photon flux (15-150 keV) in 12 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] : 16.1183 ( )
R^2/D10^2 : 0.194342 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 177.57 using 59 PHA bins.
# Reduced chi-squared = 3.1153 for 57 degrees of freedom
# Null hypothesis probability = 2.629072e-14
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.251e-07 1.079e-08
25- 50 5.296e-07 3.198e-08
50-150 9.644e-07 7.944e-08
15-150 1.619e-06 7.680e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-16.2656 -200)
Norm : 9.24234 (-0.395325 0.395325)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.79 using 59 PHA bins.
# Reduced chi-squared = 0.9964 for 57 degrees of freedom
# Null hypothesis probability = 4.827784e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.762e-07 1.398e-08
25- 50 5.314e-07 2.694e-08
50-150 1.165e-06 5.520e-08
15-150 1.973e-06 8.940e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.28234 (-1.01203 1.06179)
R1^2/D10^2 : 0.983048 (-0.283802 0.435612)
kT2 [keV] : 40.0524 (-7.93781 14.8114)
R2^2/D10^2 : 6.66303E-03 (-0.00391581 0.00692057)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.43 using 59 PHA bins.
# Reduced chi-squared = 0.7715 for 55 degrees of freedom
# Null hypothesis probability = 8.923781e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.175e-07 2.910e-08
25- 50 5.607e-07 6.348e-08
50-150 1.268e-06 3.591e-07
15-150 2.046e-06 4.362e-07
Peak spectrum fit
Power-law model
Time interval is from 0.704 sec. to 1.704 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.29902 ( -0.0992783 0.0989439 )
Norm@50keV : 6.05545E-02 ( -0.0034721 0.0034721 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.82 using 59 PHA bins.
# Reduced chi-squared = 1.014 for 57 degrees of freedom
# Null hypothesis probability = 4.446499e-01
Photon flux (15-150 keV) in 1 sec: 7.22309 ( -0.43423 0.43498 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.98605e-07 ( -3.71564e-08 3.72821e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.704 sec. to 1.704 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.07019 ( -0.398964 0.276201 )
Epeak [keV] : 223.149 ( -223.15 -223.15 )
Norm@50keV : 7.75496E-02 ( -0.0193945 0.0402494 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.71 using 59 PHA bins.
# Reduced chi-squared = 1.013 for 56 degrees of freedom
# Null hypothesis probability = 4.482706e-01
Photon flux (15-150 keV) in 1 sec: 7.15594 ( -0.44682 0.44749 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.92134e-07 ( -3.90896e-08 3.88669e-08 ) ergs/cm2
Band function
Time interval is from 0.704 sec. to 1.704 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.84094 ( -5.52652 -4.84094 )
beta : -1.38414 ( -0.116347 0.113721 )
Epeak [keV] : 28.0045 ( -4.48117 3.92758 )
Norm@50keV : 2090.30 ( -119.538 7918.92 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.46 using 59 PHA bins.
# Reduced chi-squared = 0.9720 for 55 degrees of freedom
# Null hypothesis probability = 5.335654e-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] : 18.0339 ( )
R^2/D10^2 : 0.456269 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 123.47 using 59 PHA bins.
# Reduced chi-squared = 2.1662 for 57 degrees of freedom
# Null hypothesis probability = 8.246886e-07
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.969e-08 3.415e-09
25- 50 1.375e-07 1.220e-08
50-150 3.248e-07 3.380e-08
15-150 4.920e-07 3.505e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-12.698 -200)
Norm : 30.2296 (-1.75333 1.75333)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.23 using 59 PHA bins.
# Reduced chi-squared = 1.337 for 57 degrees of freedom
# Null hypothesis probability = 4.534525e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.529e-08 5.035e-09
25- 50 1.448e-07 1.065e-08
50-150 3.177e-07 2.480e-08
15-150 5.378e-07 7.010e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.62263 (-1.45669 1.67903)
R1^2/D10^2 : 3.49729 (-1.45327 2.79276)
kT2 [keV] : 34.8940 (-6.7715 13.2437)
R2^2/D10^2 : 4.05576E-02 (-0.0253498 0.0436027)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.14 using 59 PHA bins.
# Reduced chi-squared = 0.9661 for 55 degrees of freedom
# Null hypothesis probability = 5.461540e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.644e-08 1.190e-08
25- 50 1.439e-07 2.445e-08
50-150 3.982e-07 1.408e-07
15-150 5.985e-07 1.630e-07
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: 1.47654 ( -0.0763714 0.0762168 )
Norm@50keV : 1.80035E-02 ( -0.000769352 0.000769318 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.17 using 59 PHA bins.
# Reduced chi-squared = 0.9328 for 57 degrees of freedom
# Null hypothesis probability = 6.195570e-01
Photon flux (15-150 keV) in 12 sec: 2.23367 ( -0.104021 0.104324 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.05758e-06 ( -9.25728e-08 9.27214e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.29068 ( -0.306242 0.221471 )
Epeak [keV] : 205.521 ( -95.8023 -205.571 )
Norm@50keV : 2.20512E-02 ( -0.00456091 0.00848125 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.96 using 59 PHA bins.
# Reduced chi-squared = 0.9279 for 56 degrees of freedom
# Null hypothesis probability = 6.283597e-01
Photon flux (15-150 keV) in 12 sec: 2.21076 ( -0.10933 0.10968 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.03676e-06 ( -9.9444e-08 9.8724e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.174718 ( -0.917435 3.64711 )
beta : -1.60910 ( -0.166316 0.126143 )
Epeak [keV] : 45.9951 ( -14.9135 56.231 )
Norm@50keV : 0.185420 ( -0.184874 30.3728 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.56 using 59 PHA bins.
# Reduced chi-squared = 0.8465 for 55 degrees of freedom
# Null hypothesis probability = 7.840644e-01
Photon flux (15-150 keV) in 12 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) = 5.03e-07
S(50-100 keV) = 7.24e-07
T90 vs. Hardness ratio plot
T90 = 11 sec.
Hardness ratio (energy fluence ratio) = 1.43936
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.78771
Count Ratio (50-100 keV) / (15-25 keV) = 1.32059
Mask shadow pattern
IMX = 7.952965612299452E-01, IMY = 3.666454410778809E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
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:
-183.995410 -0.296000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.4477 -62.9074 52.7 46.5 34.6 -0.1613 -0.2 10.0 GX 301-2
244.9813 -15.6386 0.5 26.7 151.3 7.0176 24.9 0.1 Sco X-1
256.0099 -37.8355 2.3 2.5 156.0 1.0488 4.9 1.2 4U 1700-377
256.3850 -36.4506 1.3 3.8 168.1 1.9021 9.2 2.9 GX 349+2
263.0609 -24.5955 12.6 16.3 -162.5 0.2165 0.9 9.4 GX 1+4
264.5343 -44.4665 4.7 6.9 -50.8 0.5512 2.5 9.0 4U 1735-44
268.4935 -1.5206 21.7 40.0 -164.0 -0.1797 -0.5 8.6 SW J1753.5-0127
270.2048 -24.9649 3.0 18.7 -142.2 0.8032 3.8 8.1 GX 5-1
270.1585 -25.7361 3.3 18.0 -141.0 0.7499 3.4 7.8 GRS 1758-258
274.0283 -14.0439 4.0 30.0 -147.6 0.6973 2.9 1.4 GX 17+2
275.8202 -30.5253 11.6 17.9 -118.4 0.2210 1.0 10.9 H1820-303
284.8341 -24.8159 0.0 27.7 -116.9 -0.2081 -0.7 12.7 HT1900.1-2455
263.1622 -33.6874 16.2 8.0 -143.6 0.1474 0.7 12.4 GX 354-0
208.7288 -39.9698 2.9 36.6 72.4 2.3980 4.0 ------ UNKNOWN
261.5580 -52.9951 2.7 13.2 -13.3 0.8803 4.3 ------ UNKNOWN
299.6454 -51.1736 3.0 31.1 -56.7 1.1013 3.9 ------ UNKNOWN
276.5805 16.8096 2.9 59.8 -160.2 7.3076 3.9 ------ UNKNOWN
289.5133 3.0040 3.2 52.3 -139.3 4.4000 3.7 ------ UNKNOWN
296.1957 -10.5746 3.4 45.4 -121.4 3.4317 3.4 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.296000 11.704000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.6850 -62.6022 5.0 46.4 35.1 0.4410 2.3 10.1 GX 301-2
244.8641 -15.4835 0.0 26.9 151.2 -0.1042 -1.6 11.5 Sco X-1
255.9133 -37.6915 153.0 2.7 155.6 0.0039 0.1 9.8 4U 1700-377
256.5166 -36.4324 14.0 3.8 169.7 0.0433 0.8 4.0 GX 349+2
263.0029 -24.7475 59.1 16.2 -162.5 -0.0107 -0.2 0.4 GX 1+4
264.9605 -44.5470 18.4 7.2 -51.7 0.0349 0.6 11.0 4U 1735-44
268.4553 -1.3065 15.6 40.2 -164.1 -0.0585 -0.7 10.2 SW J1753.5-0127
270.3476 -25.2226 6.9 18.5 -141.4 0.0855 1.7 9.3 GX 5-1
270.3029 -25.6743 13.8 18.1 -140.8 0.0508 1.0 4.1 GRS 1758-258
274.0041 -14.0271 78.0 30.0 -147.6 -0.0097 -0.1 0.6 GX 17+2
275.7599 -30.4130 4.7 17.9 -118.8 0.1371 2.4 9.0 H1820-303
284.8523 -24.8728 4.8 27.7 -116.8 0.1686 2.4 10.4 HT1900.1-2455
263.1642 -33.7325 7.5 8.0 -143.4 -0.0828 -1.5 10.7 GX 354-0
311.6791 -71.5512 0.3 41.2 -24.8 3.1324 36.6 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
80.404590 563.204600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
255.9795 -37.8883 4.6 43.7 179.0 1.7537 2.5 2.7 4U 1700-377
256.3601 -36.4926 3.9 44.9 -179.8 2.1217 3.0 5.5 GX 349+2
262.9056 -24.7739 8.4 54.1 -167.7 1.6959 1.4 5.9 GX 1+4
264.6124 -44.5355 2700.0 35.0 -175.7 0.0015 0.0 7.6 4U 1735-44
270.3231 -25.0785 3.5 51.9 -159.8 2.9349 3.3 2.1 GX 5-1
270.3897 -25.7839 5.7 51.2 -159.9 1.6644 2.0 5.3 GRS 1758-258
275.6926 -30.3413 4.9 45.6 -155.5 -1.5785 -2.3 12.1 H1820-303
285.0754 -24.9999 4.0 48.9 -142.8 2.6394 2.9 5.2 HT1900.1-2455
263.0703 -33.7416 5.0 45.5 -171.2 1.4937 2.3 6.9 GX 354-0
205.3216 -71.8877 4.0 29.1 107.7 2.0139 2.9 ------ UNKNOWN
358.7378 -79.9936 3.5 13.7 37.4 1.3128 3.3 ------ UNKNOWN
33.5660 -34.8779 3.9 54.6 -15.2 4.0055 3.0 ------ UNKNOWN
35.4370 -30.2585 2.5 59.5 -15.5 14.1060 4.6 ------ UNKNOWN
34.1660 -29.6776 2.4 59.6 -17.0 15.1090 4.9 ------ UNKNOWN
281.1433 -27.3834 3.2 47.3 -148.1 2.7648 3.6 ------ UNKNOWN
Plot creation:
Fri Mar 18 11:40:38 EDT 2016