Special notes of this burst
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
305.6629 28.4056 0.0084 38.9668 -144.8383 4.1699026 22.909 TRIG_00743065
Foreground time interval of the image:
-21.592 37.005 (delta_t = 58.597 [sec])
Background time interval of the image:
-239.296 -21.592 (delta_t = 217.704 [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 4.096000
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 4.096000
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 4.096000
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 -21.592 sec. to 146.260 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.33404 ( -0.107874 0.106659 )
Norm@50keV : 2.21459E-03 ( -0.000138819 0.000138817 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.31 using 59 PHA bins.
# Reduced chi-squared = 1.304 for 57 degrees of freedom
# Null hypothesis probability = 6.152562e-02
Photon flux (15-150 keV) in 167.9 sec: 0.265938 ( -0.017658 0.017704 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.64519e-06 ( -2.43692e-07 2.44728e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -21.592 sec. to 146.260 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.773957 ( -0.538568 0.473002 )
Epeak [keV] : 113.058 ( -32.4879 288.862 )
Norm@50keV : 4.17757E-03 ( -0.00170479 0.00341446 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.18 using 59 PHA bins.
# Reduced chi-squared = 1.253 for 56 degrees of freedom
# Null hypothesis probability = 9.628554e-02
Photon flux (15-150 keV) in 167.9 sec: 0.259725 ( -0.018479 0.018475 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.50495e-06 ( -2.78751e-07 2.74783e-07 ) ergs/cm2
Band function
Time interval is from -21.592 sec. to 146.260 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 16.2512 (-1.20131 1.34313)
R^2/D10^2 : 2.39206E-02 (-0.00585018 0.00747323)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 102.61 using 59 PHA bins.
# Reduced chi-squared = 1.8001 for 57 degrees of freedom
# Null hypothesis probability = 2.019675e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.185e-07 2.560e-08
25- 50 9.318e-07 7.707e-08
50-150 1.730e-06 1.999e-07
15-150 2.880e-06 2.090e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-17.6037 -200)
Norm : 1.11951 (-0.0706013 0.0706013)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 82.55 using 59 PHA bins.
# Reduced chi-squared = 1.448 for 57 degrees of freedom
# Null hypothesis probability = 1.510155e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.680e-07 3.266e-08
25- 50 9.003e-07 6.959e-08
50-150 1.975e-06 4.591e-07
15-150 3.343e-06 5.709e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 12.1758 (-1.11056 1.27606)
R1^2/D10^2 : 5.49504E-02 (-0.0201355 0.0219178)
kT2 [keV] : 200.000 (-147.623 -200)
R2^2/D10^2 : 3.13203E-05 (-6.74169e-06 8.44081e-05)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.29 using 59 PHA bins.
#Fit statistic : Chi-Squared = 54.47 using 59 PHA bins.
# Reduced chi-squared = 1.005 for 55 degrees of freedom
# Reduced chi-squared = 0.9904 for 55 degrees of freedom
# Null hypothesis probability = 4.635505e-01
# Null hypothesis probability = 4.948281e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.029e-07 5.155e-08
25- 50 9.817e-07 1.701e-07
50-150 2.266e-06 1.725e-06
15-150 3.551e-06 1.840e-06
Peak spectrum fit
Power-law model
Time interval is from 1.872 sec. to 2.872 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.807232 ( -0.394984 0.357724 )
Norm@50keV : 1.06097E-02 ( -0.00254252 0.00245108 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 83.16 using 59 PHA bins.
# Reduced chi-squared = 1.459 for 57 degrees of freedom
# Null hypothesis probability = 1.347755e-02
Photon flux (15-150 keV) in 1 sec: 1.21907 ( -0.275909 0.28129 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.23623e-07 ( -2.5825e-08 2.58387e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.872 sec. to 2.872 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.07846 ( -5.42104 2.0185 )
Epeak [keV] : 113.582 ( -32.8191 -113.265 )
Norm@50keV : 4.72059E-02 ( -0.0478517 1.61382 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 81.13 using 59 PHA bins.
# Reduced chi-squared = 1.449 for 56 degrees of freedom
# Null hypothesis probability = 1.570168e-02
Photon flux (15-150 keV) in 1 sec: 1.10328 ( -0.312814 0.31712 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.19812e-07 ( -2.84974e-08 2.71178e-08 ) ergs/cm2
Band function
Time interval is from 1.872 sec. to 2.872 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 27.3803 (-5.71824 8.95494)
R^2/D10^2 : 2.44762E-02 (-0.0140118 0.0264743)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 81.01 using 59 PHA bins.
# Reduced chi-squared = 1.421 for 57 degrees of freedom
# Null hypothesis probability = 1.999165e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.031e-09 1.657e-09
25- 50 1.797e-08 7.669e-09
50-150 9.806e-08 4.208e-08
15-150 1.191e-07 4.623e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-49.2195 -200)
Norm : 5.18484 (-1.17954 1.17954)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 95.06 using 59 PHA bins.
# Reduced chi-squared = 1.668 for 57 degrees of freedom
# Null hypothesis probability = 1.166583e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.292e-08 7.650e-09
25- 50 2.486e-08 1.437e-08
50-150 5.453e-08 3.237e-08
15-150 9.231e-08 5.495e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.90937 (-2.90345 8.27792)
R1^2/D10^2 : 30.2899 (-30.509 -30.509)
kT2 [keV] : 28.6679 (-6.287 10.6555)
R2^2/D10^2 : 2.08931E-02 (-0.0208996 0.0146826)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.34 using 59 PHA bins.
# Reduced chi-squared = 1.443 for 55 degrees of freedom
# Null hypothesis probability = 1.751969e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.430e-09 3.755e-09
25- 50 1.732e-08 8.572e-09
50-150 9.860e-08 5.261e-08
15-150 1.234e-07 5.316e-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: 1.05813 ( -0.107346 0.10456 )
Norm@50keV : 4.66762E-03 ( -0.000303905 0.000302515 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.91 using 59 PHA bins.
# Reduced chi-squared = 1.367 for 57 degrees of freedom
# Null hypothesis probability = 3.430756e-02
Photon flux (15-150 keV) in 58.6 sec: 0.539425 ( -0.0365086 0.0366811 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.89912e-06 ( -1.85812e-07 1.86078e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -3.64856E-02 ( -0.598452 0.522538 )
Epeak [keV] : 106.976 ( -19.0537 45.1919 )
Norm@50keV : 1.41620E-02 ( -0.00570394 0.0111424 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.41 using 59 PHA bins.
# Reduced chi-squared = 1.132 for 56 degrees of freedom
# Null hypothesis probability = 2.316477e-01
Photon flux (15-150 keV) in 58.6 sec: 0.515304 ( -0.038013 0.038203 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.76165e-06 ( -2.04409e-07 2.02522e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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) = 8.26e-07
S(50-100 keV) = 1.31e-06
T90 vs. Hardness ratio plot
T90 = 116.915999948978 sec.
Hardness ratio (energy fluence ratio) = 1.58596
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 2.21546
Count Ratio (50-100 keV) / (15-25 keV) = 1.58506
Mask shadow pattern
IMX = -6.612393533234450E-01, IMY = 4.657918283912302E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000
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:
-239.296000 -21.592000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9878 -15.6312 0.9 38.2 68.7 8.7343 12.8 0.7 Sco X-1
254.4719 35.3621 4.2 46.0 149.3 2.3450 2.8 1.4 Her X-1
255.9772 -37.8221 2.0 42.0 31.1 2.9227 5.7 1.4 4U 1700-377
256.5914 -36.3973 13.8 40.6 32.0 0.4050 0.8 7.7 GX 349+2
262.8560 -24.7154 4.2 28.3 38.5 0.8446 2.7 8.5 GX 1+4
264.8757 -44.3568 10.2 43.9 17.7 -0.5239 -1.1 8.0 4U 1735-44
268.3750 -1.4774 295.4 13.3 96.6 0.0097 0.0 1.5 SW J1753.5-0127
270.2814 -25.0752 13.8 24.6 25.7 0.2318 0.8 0.3 GX 5-1
270.2810 -25.7419 23.3 25.2 25.0 0.1373 0.5 1.2 GRS 1758-258
274.1576 -14.0587 2.7 13.3 33.6 1.1878 4.4 8.9 GX 17+2
275.9145 -30.2819 4.5 27.8 11.0 0.7233 2.6 5.1 H1820-303
284.8845 -25.0747 0.0 22.3 -7.4 0.4487 1.8 12.4 HT1900.1-2455
288.8408 10.9507 1.2 15.7 -152.4 2.5138 9.3 2.5 GRS 1915+105
299.5670 35.2007 0.9 41.7 -157.3 5.8072 12.9 1.1 Cyg X-1
308.2485 41.0670 0.0 50.3 -153.5 1.6972 2.1 9.3 Cyg X-3
262.8364 -33.6759 6.1 35.4 28.0 0.7017 1.9 12.2 GX 354-0
259.9158 -25.0234 0.7 30.4 41.9 5.3350 15.4 ------ UNKNOWN
279.5844 32.2026 3.0 35.2 177.4 1.2548 3.9 ------ UNKNOWN
309.5439 47.8887 4.1 56.4 -157.4 4.9031 2.9 ------ UNKNOWN
323.8390 -35.4036 5.8 50.7 -44.6 3.1877 2.0 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-21.592000 37.004610
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9923 -15.5178 4.3 38.2 68.9 -0.8780 -2.7 7.4 Sco X-1
254.5993 35.2317 0.0 45.8 149.3 -0.2850 -0.9 9.6 Her X-1
256.0334 -37.9036 8.4 42.0 31.0 -0.3092 -1.4 4.2 4U 1700-377
256.5882 -36.5367 9.7 40.7 31.8 -0.2547 -1.2 10.0 GX 349+2
262.9215 -24.6104 8.4 28.2 38.6 0.1958 1.4 9.4 GX 1+4
264.7380 -44.4518 107.3 44.1 17.8 -0.0235 -0.1 0.2 4U 1735-44
268.2867 -1.3260 4.5 13.4 97.2 -0.3140 -2.6 9.0 SW J1753.5-0127
270.3538 -25.1954 4.7 24.7 25.4 0.3171 2.5 7.9 GX 5-1
270.1484 -25.8771 9.6 25.4 25.1 0.1575 1.2 11.6 GRS 1758-258
274.1575 -13.9954 7.3 13.3 33.8 -0.1693 -1.6 9.2 GX 17+2
276.0655 -30.2964 5.2 27.8 10.7 -0.2645 -2.2 8.4 H1820-303
285.1725 -24.8295 12.2 22.1 -8.2 -0.1005 -0.9 9.2 HT1900.1-2455
288.6493 10.9914 8.3 15.6 -153.1 -0.1478 -1.4 9.2 GRS 1915+105
299.6500 35.1759 11.8 41.7 -157.2 -0.1845 -1.0 3.3 Cyg X-1
308.2490 41.0582 3.6 50.3 -153.5 -1.1530 -3.2 8.9 Cyg X-3
262.8347 -33.7926 5.2 35.5 27.9 -0.3603 -2.2 8.1 GX 354-0
242.9687 5.9024 2.8 39.6 103.4 1.7199 4.1 ------ UNKNOWN
271.7279 53.0269 2.0 56.6 173.3 4.1843 5.8 ------ UNKNOWN
305.6629 28.4056 0.5 39.0 -144.8 4.1701 22.9 ------ UNKNOWN
313.1061 41.3782 2.3 52.8 -150.1 2.0698 5.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
97.004590 662.764000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
268.2473 -1.3809 6.0 46.6 36.2 2.7260 1.9 8.4 SW J1753.5-0127
273.9729 -14.0085 8.2 52.3 19.5 2.5118 1.4 2.5 GX 17+2
285.0429 -24.8606 4.3 56.8 1.9 6.0139 2.7 3.6 HT1900.1-2455
288.7972 10.9520 1.1 23.5 24.9 4.8818 10.2 0.4 GRS 1915+105
299.5822 35.2051 0.5 8.5 124.0 10.2460 23.2 0.4 Cyg X-1
308.1586 40.9700 4.8 12.7 168.2 1.0825 2.4 2.4 Cyg X-3
325.9953 38.2919 4.2 19.6 -146.0 1.2305 2.7 8.5 Cyg X-2
314.3803 64.9578 2.2 37.0 165.6 3.8898 5.3 ------ UNKNOWN
322.8257 45.4005 2.9 21.8 -166.4 1.6513 4.0 ------ UNKNOWN
Plot creation:
Thu Apr 13 21:22:28 EDT 2017