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
262.1579 -0.0577 0.0054 16.4616 146.7014 2.4665659 35.703 TRIG_00736843
Foreground time interval of the image:
-1.424 9.781 (delta_t = 11.205 [sec])
Background time interval of the image:
-60.520 -1.424 (delta_t = 59.096 [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 0.064000
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 0.064000
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 0.064000
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 -1.424 sec. to 46.396 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.85199 ( -0.0646087 0.0650872 )
Norm@50keV : 8.59925E-03 ( -0.000290248 0.000289047 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.11 using 59 PHA bins.
# Reduced chi-squared = 0.6861 for 57 degrees of freedom
# Null hypothesis probability = 9.662173e-01
Photon flux (15-150 keV) in 47.82 sec: 1.20976 ( -0.04103 0.04118 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.78155e-06 ( -1.28213e-07 1.28837e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -1.424 sec. to 46.396 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.63286 ( -0.269799 0.130203 )
Epeak [keV] : 79.5191 ( -21.1259 -79.5196 )
Norm@50keV : 1.11393E-02 ( -0.00266357 0.00408512 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 36.94 using 59 PHA bins.
# Reduced chi-squared = 0.6596 for 56 degrees of freedom
# Null hypothesis probability = 9.769307e-01
Photon flux (15-150 keV) in 47.82 sec: 1.18816 ( -0.04758 0.04772 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.69105e-06 ( -1.64015e-07 1.63908e-07 ) ergs/cm2
Band function
Time interval is from -1.424 sec. to 46.396 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] : 12.1626 ( )
R^2/D10^2 : 0.254558 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 229.50 using 59 PHA bins.
# Reduced chi-squared = 4.0262 for 57 degrees of freedom
# Null hypothesis probability = 1.470429e-22
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.812e-07 2.348e-08
25- 50 1.219e-06 4.208e-08
50-150 1.094e-06 7.484e-08
15-150 2.694e-06 9.612e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 97.1216 (-11.8612 14.7769)
Norm : 5.23565 (-0.268832 0.291747)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.84 using 59 PHA bins.
# Reduced chi-squared = 0.7165 for 57 degrees of freedom
# Null hypothesis probability = 9.476056e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.543e-07 4.471e-08
25- 50 1.125e-06 4.973e-08
50-150 1.792e-06 4.431e-07
15-150 3.571e-06 4.581e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.03526 (-0.761858 0.779736)
R1^2/D10^2 : 1.44609 (-0.43422 0.721309)
kT2 [keV] : 25.2061 (-3.60907 5.19451)
R2^2/D10^2 : 1.24652E-02 (-0.00606929 0.0100094)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.27 using 59 PHA bins.
# Reduced chi-squared = 0.7503 for 55 degrees of freedom
# Null hypothesis probability = 9.150642e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.182e-07 6.575e-08
25- 50 1.137e-06 8.536e-08
50-150 1.885e-06 3.376e-07
15-150 3.641e-06 3.486e-07
Peak spectrum fit
Power-law model
Time interval is from -0.296 sec. to 0.704 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.48921 ( -0.114568 0.115579 )
Norm@50keV : 3.44780E-02 ( -0.00225542 0.00224376 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.67 using 59 PHA bins.
# Reduced chi-squared = 0.7486 for 57 degrees of freedom
# Null hypothesis probability = 9.208522e-01
Photon flux (15-150 keV) in 1 sec: 4.29194 ( -0.27189 0.27211 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.27703e-07 ( -2.38665e-08 2.41085e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.296 sec. to 0.704 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.27946 ( -0.479661 0.270227 )
Epeak [keV] : 167.559 ( -167.56 -167.56 )
Norm@50keV : 4.42049E-02 ( -0.0115964 0.0329083 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.01 using 59 PHA bins.
# Reduced chi-squared = 0.7501 for 56 degrees of freedom
# Null hypothesis probability = 9.173627e-01
Photon flux (15-150 keV) in 1 sec: 4.24465 ( -0.28955 0.28857 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.21048e-07 ( -2.77764e-08 2.74738e-08 ) ergs/cm2
Band function
Time interval is from -0.296 sec. to 0.704 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] : 14.1145 (-1.15641 1.2944)
R^2/D10^2 : 0.590704 (-0.155982 0.207498)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 93.81 using 59 PHA bins.
# Reduced chi-squared = 1.646 for 57 degrees of freedom
# Null hypothesis probability = 1.539141e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.484e-08 3.175e-09
25- 50 9.313e-08 7.115e-09
50-150 1.227e-07 1.700e-08
15-150 2.406e-07 2.085e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-41.3088 -200)
Norm : 17.4712 (-1.09209 1.09209)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.76 using 59 PHA bins.
# Reduced chi-squared = 0.7502 for 57 degrees of freedom
# Null hypothesis probability = 9.192757e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.360e-08 3.230e-09
25- 50 8.388e-08 6.730e-09
50-150 1.840e-07 4.794e-08
15-150 3.114e-07 5.050e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.27344 (-1.66225 1.69891)
R1^2/D10^2 : 2.69443 (-1.15435 2.68806)
kT2 [keV] : 33.0862 (-9.104 24.0369)
R2^2/D10^2 : 2.36619E-02 (-0.0185982 0.0488998)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.42 using 59 PHA bins.
# Reduced chi-squared = 0.7713 for 55 degrees of freedom
# Null hypothesis probability = 8.926297e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.796e-08 8.150e-09
25- 50 8.772e-08 1.755e-08
50-150 1.990e-07 8.938e-08
15-150 3.247e-07 1.033e-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: 1.68386 ( -0.0807113 0.0813197 )
Norm@50keV : 1.40081E-02 ( -0.000626293 0.000623351 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.83 using 59 PHA bins.
# Reduced chi-squared = 0.9795 for 57 degrees of freedom
# Null hypothesis probability = 5.188880e-01
Photon flux (15-150 keV) in 11.2 sec: 1.85006 ( -0.0800034 0.0801406 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.45456e-06 ( -6.88951e-08 6.93581e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.42080 ( -0.33202 0.293556 )
Epeak [keV] : 104.485 ( -34.3974 -104.486 )
Norm@50keV : 1.91866E-02 ( -0.00545185 0.00912852 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.71 using 59 PHA bins.
# Reduced chi-squared = 0.9591 for 56 degrees of freedom
# Null hypothesis probability = 5.620319e-01
Photon flux (15-150 keV) in 11.2 sec: 1.81800 ( -0.08786 0.08787 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.41475e-06 ( -8.3216e-08 8.32496e-08 ) 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) = 1.09e-06
S(50-100 keV) = 1.20e-06
T90 vs. Hardness ratio plot
T90 = 26.1279999613762 sec.
Hardness ratio (energy fluence ratio) = 1.10092
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.15065
Count Ratio (50-100 keV) / (15-25 keV) = 0.62633
Mask shadow pattern
IMX = -2.469723229948882E-01, IMY = -1.622217512066765E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
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:
-60.520000 -1.424000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9284 -15.6447 1.5 23.4 77.3 0.5535 7.6 3.0 Sco X-1
254.3691 35.4592 7.1 52.4 156.9 -0.5189 -1.7 8.2 Her X-1
255.9793 -37.8282 1.7 25.6 16.7 0.4474 6.8 1.0 4U 1700-377
256.5290 -36.5898 131.8 24.3 17.3 0.0056 0.1 11.0 GX 349+2
262.9656 -24.8904 5.8 11.5 21.5 0.1202 2.0 9.0 GX 1+4
264.9323 -44.4350 4.5 29.6 -1.8 -0.1773 -2.6 8.2 4U 1735-44
268.3999 -1.3527 7.0 13.7 169.0 0.1003 1.6 6.3 SW J1753.5-0127
270.4601 -25.0029 13.7 10.1 -14.7 0.0526 0.8 10.6 GX 5-1
270.1506 -25.8766 24.1 10.9 -12.7 -0.0288 -0.5 11.5 GRS 1758-258
274.1491 -14.1401 5.8 4.9 -107.3 0.1181 2.0 10.4 GX 17+2
275.7491 -30.4179 9.7 16.6 -28.2 0.0741 1.2 9.6 H1820-303
285.2096 -24.7795 0.0 18.0 -62.4 -0.0542 -0.8 12.7 HT1900.1-2455
288.8478 10.8218 5.4 32.4 -149.7 0.1570 2.1 8.0 GRS 1915+105
262.8320 -33.7607 3.5 19.6 7.9 0.2000 3.3 9.0 GX 354-0
242.5253 24.2310 2.7 47.1 138.2 1.1521 4.3 ------ UNKNOWN
251.0216 -26.2166 2.2 20.3 45.7 0.3513 5.3 ------ UNKNOWN
239.7399 -57.6651 2.5 48.0 12.8 0.5964 4.6 ------ UNKNOWN
256.8731 -19.0670 2.9 12.4 61.3 0.2405 4.0 ------ UNKNOWN
262.1540 -0.0404 1.1 16.5 146.7 0.6318 10.3 ------ UNKNOWN
259.7815 -25.0270 1.9 13.3 31.9 0.3632 6.1 ------ UNKNOWN
273.3471 -65.0131 2.6 50.1 -10.2 0.5434 4.4 ------ UNKNOWN
UNKNOWN
UNKNOWN
UNKNOWN
UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-1.424000 9.780590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9471 -15.6279 1.9 23.3 77.4 0.5232 6.1 2.0 Sco X-1
254.5422 35.2144 5.1 52.1 157.0 -0.7671 -2.3 8.7 Her X-1
255.9902 -37.7735 2.2 25.6 16.7 0.3879 5.3 4.2 4U 1700-377
256.4936 -36.5896 7.4 24.4 17.4 0.1117 1.6 10.4 GX 349+2
262.8661 -24.6292 9.4 11.3 22.6 0.0839 1.2 10.5 GX 1+4
264.6667 -44.5345 26.4 29.8 -1.4 0.0329 0.4 6.0 4U 1735-44
268.4239 -1.5405 5.5 13.5 169.0 0.1371 2.1 6.3 SW J1753.5-0127
270.4681 -24.9494 0.0 10.0 -14.8 0.0172 0.3 12.7 GX 5-1
270.2934 -25.6906 6.6 10.7 -13.4 -0.1219 -1.7 3.2 GRS 1758-258
273.8345 -14.1673 0.0 4.6 -107.7 0.0884 1.3 12.7 GX 17+2
276.0742 -30.5253 0.0 16.8 -29.0 0.1285 1.9 12.2 H1820-303
284.8823 -24.7730 0.0 17.7 -61.9 -0.1179 -1.5 12.2 HT1900.1-2455
288.8685 10.9148 4.6 32.5 -149.7 0.2195 2.5 4.5 GRS 1915+105
262.9322 -33.8277 17.6 19.6 7.6 -0.0442 -0.7 2.9 GX 354-0
262.1579 -0.0578 0.3 16.5 146.7 2.4666 35.7 ------ UNKNOWN
286.0218 -71.6380 2.5 57.5 -14.1 1.4725 4.7 ------ UNKNOWN
302.5252 -28.1650 2.3 33.6 -69.2 0.6142 5.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
49.580600 125.109900
126.480000 686.880590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9781 -15.6356 0.2 23.0 28.3 41.6210 51.5 0.3 Sco X-1
254.4645 35.1949 4.7 36.0 150.9 -3.4355 -2.4 8.9 Her X-1
256.0021 -37.8443 0.5 38.2 -10.5 23.8667 23.8 0.7 4U 1700-377
256.5753 -36.4685 5.0 36.8 -10.8 2.2596 2.3 7.3 GX 349+2
263.0303 -24.7493 1.3 24.7 -20.3 6.5673 8.8 1.2 GX 1+4
264.6569 -44.4444 8.2 44.4 -20.9 1.8157 1.4 3.7 4U 1735-44
268.3424 -1.6011 33.6 6.4 -94.4 0.2534 0.3 9.0 SW J1753.5-0127
270.2427 -25.1357 5.8 26.3 -35.1 1.7206 2.0 4.1 GX 5-1
270.3995 -25.9129 0.0 27.0 -34.8 0.3562 0.4 11.5 GRS 1758-258
273.9509 -13.9679 3.3 18.2 -57.9 2.6910 3.5 5.2 GX 17+2
275.7824 -30.4883 5.6 33.1 -40.2 -1.8801 -2.1 10.4 H1820-303
285.2080 -24.9040 26.1 33.4 -58.6 -0.5723 -0.4 9.4 HT1900.1-2455
288.8113 10.9432 1.3 28.7 -131.8 8.6206 9.1 0.8 GRS 1915+105
299.6117 35.2007 1.0 49.6 -157.6 21.7944 11.5 1.1 Cyg X-1
263.0663 -33.9238 4.1 33.9 -19.7 2.5729 2.8 6.6 GX 354-0
243.0385 11.5929 2.6 22.3 103.9 3.6066 4.4 ------ UNKNOWN
237.3578 -35.4286 2.7 42.2 12.2 5.2376 4.2 ------ UNKNOWN
232.2463 -49.0344 3.7 55.3 5.1 10.1460 3.2 ------ UNKNOWN
282.0829 51.4094 3.2 54.2 176.9 12.1983 3.6 ------ UNKNOWN
286.8873 52.9995 4.2 56.9 179.1 16.9716 2.8 ------ UNKNOWN
238.7242 -49.9278 3.0 53.7 0.2 9.0225 3.8 ------ UNKNOWN
UNKNOWN
UNKNOWN
UNKNOWN
Plot creation:
Thu Apr 13 22:21:22 EDT 2017