Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
288.1049 22.4392 0.0183 37.0280 59.3346 1.3675421 10.529 TRIG_00785510
Foreground time interval of the image:
-5.368 15.416 (delta_t = 20.784 [sec])
Background time interval of the image:
-182.035 -5.368 (delta_t = 176.667 [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 8.192000
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 8.192000
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 8.192000
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 -5.368 sec. to 15.416 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.15365 ( -0.251762 0.242135 )
Norm@50keV : 4.40534E-03 ( -0.000632526 0.000630181 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.56 using 59 PHA bins.
# Reduced chi-squared = 1.168 for 57 degrees of freedom
# Null hypothesis probability = 1.810181e-01
Photon flux (15-150 keV) in 20.78 sec: 0.513979 ( -0.077253 0.077864 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.41446e-07 ( -1.40422e-07 1.41272e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -5.368 sec. to 15.416 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.170558 ( -1.5133 1.06463 )
Epeak [keV] : 105.140 ( -31.6702 -104.967 )
Norm@50keV : 1.20823E-02 ( -0.0121288 0.0397462 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.26 using 59 PHA bins.
# Reduced chi-squared = 1.147 for 56 degrees of freedom
# Null hypothesis probability = 2.097378e-01
Photon flux (15-150 keV) in 20.78 sec: 0.488626 ( -0.083261 0.083144 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.92042e-07 ( -1.55164e-07 1.53871e-07 ) ergs/cm2
Band function
Time interval is from -5.368 sec. to 15.416 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] : 19.7905 (-3.0478 3.92985)
R^2/D10^2 : 2.51211E-02 (-0.011382 0.0190663)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.18 using 59 PHA bins.
# Reduced chi-squared = 1.179 for 57 degrees of freedom
# Null hypothesis probability = 1.675899e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.958e-08 1.057e-08
25- 50 1.958e-07 5.214e-08
50-150 5.675e-07 1.450e-07
15-150 8.029e-07 1.753e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-42.044 -200)
Norm : 2.18562 (-0.316705 0.316705)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.12 using 59 PHA bins.
# Reduced chi-squared = 1.283 for 57 degrees of freedom
# Null hypothesis probability = 7.379433e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.132e-07 6.342e-08
25- 50 2.177e-07 1.220e-07
50-150 4.774e-07 2.682e-07
15-150 8.083e-07 4.556e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.10134 (-4.08209 -5.11509)
R1^2/D10^2 : 0.779586 (-0.769831 394.464)
kT2 [keV] : 22.3618 (-4.36188 -22.3665)
R2^2/D10^2 : 1.58106E-02 (-0.0157765 0.0143898)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.30 using 59 PHA bins.
# Reduced chi-squared = 1.169 for 55 degrees of freedom
# Null hypothesis probability = 1.830277e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.284e-08 3.877e-08
25- 50 1.904e-07 7.665e-08
50-150 6.033e-07 2.387e-07
15-150 8.665e-07 3.805e-07
Peak spectrum fit
Power-law model
Time interval is from 3.500 sec. to 4.500 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.54097 ( -0.568855 0.579311 )
Norm@50keV : 9.25596E-03 ( -0.00302745 0.00296515 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.56 using 59 PHA bins.
# Reduced chi-squared = 0.7993 for 57 degrees of freedom
# Null hypothesis probability = 8.619633e-01
Photon flux (15-150 keV) in 1 sec: 1.16874 ( -0.375692 0.3785 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.7263e-08 ( -2.9961e-08 3.09159e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 3.500 sec. to 4.500 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.912544 ( -3.59703 1.27385 )
Epeak [keV] : 85.8513 ( -85.85 -85.85 )
Norm@50keV : 1.92365E-02 ( -0.0192371 0.930107 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.32 using 59 PHA bins.
# Reduced chi-squared = 0.8093 for 56 degrees of freedom
# Null hypothesis probability = 8.454751e-01
Photon flux (15-150 keV) in 1 sec: 1.13268 ( -0.405042 0.39749 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.30462e-08 ( -3.19169e-08 3.36912e-08 ) ergs/cm2
Band function
Time interval is from 3.500 sec. to 4.500 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] : 15.1672 (-4.83776 7.91284)
R^2/D10^2 : 0.125712 (-0.125664 0.373914)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.84 using 59 PHA bins.
# Reduced chi-squared = 0.8218 for 57 degrees of freedom
# Null hypothesis probability = 8.292762e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.043e-09 3.898e-09
25- 50 2.426e-08 1.499e-08
50-150 3.816e-08 2.700e-08
15-150 6.846e-08 4.140e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.331 (-199.333 -199.333)
Norm : 4.77091 (-1.48823 2.24114)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.39 using 59 PHA bins.
# Reduced chi-squared = 0.7963 for 57 degrees of freedom
# Null hypothesis probability = 8.660620e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.188e-08 7.215e-09
25- 50 2.285e-08 1.430e-08
50-150 5.012e-08 3.062e-08
15-150 8.485e-08 5.165e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.67282 (-4.69404 124.232)
R1^2/D10^2 : 4.59320 (-4.55609 -4.55609)
kT2 [keV] : 19.2014 (-7.38275 -19.2184)
R2^2/D10^2 : 4.86317E-02 (-0.0484647 0.235962)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.01 using 59 PHA bins.
# Reduced chi-squared = 0.8184 for 55 degrees of freedom
# Null hypothesis probability = 8.295490e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.196e-08 7.700e-09
25- 50 2.167e-08 1.176e-08
50-150 4.632e-08 3.045e-08
15-150 7.995e-08 4.535e-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: 1.15365 ( -0.251762 0.242135 )
Norm@50keV : 4.40534E-03 ( -0.000632526 0.000630181 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.56 using 59 PHA bins.
# Reduced chi-squared = 1.168 for 57 degrees of freedom
# Null hypothesis probability = 1.810181e-01
Photon flux (15-150 keV) in 20.78 sec: 0.513977 ( -0.0772479 0.0778609 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.4134e-07 ( -1.40398e-07 1.41314e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.166740 ( -1.51268 1.06527 )
Epeak [keV] : 104.962 ( -33.0339 -104.962 )
Norm@50keV : 1.21289E-02 ( -0.012129 0.0397462 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.26 using 59 PHA bins.
# Reduced chi-squared = 1.147 for 56 degrees of freedom
# Null hypothesis probability = 2.097385e-01
Photon flux (15-150 keV) in 20.78 sec: 0.488608 ( -0.083248 0.083128 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.92445e-07 ( -1.55229e-07 1.54061e-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) = 1.92e-07
S(50-100 keV) = 3.45e-07
T90 vs. Hardness ratio plot
T90 = 18.8800000548363 sec.
Hardness ratio (energy fluence ratio) = 1.79688
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.53874
Count Ratio (50-100 keV) / (15-25 keV) = 1.90734
Mask shadow pattern
IMX = 3.847212005876110E-01, IMY = -6.488364265045372E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
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:
-182.035410 -5.368000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9901 -15.6410 0.3 22.3 -87.8 8.7011 34.2 0.6 Sco X-1
254.3019 35.3413 5.0 44.7 10.6 -0.8812 -2.3 7.6 Her X-1
255.9445 -37.9124 3.3 31.5 -139.5 0.9215 3.5 4.6 4U 1700-377
256.4488 -36.5680 5.2 30.1 -139.4 -0.5587 -2.2 8.7 GX 349+2
262.9900 -24.7346 2.7 17.2 -145.0 0.8363 4.3 1.2 GX 1+4
264.7446 -44.5321 7.7 36.7 -153.4 -0.4528 -1.5 4.9 4U 1735-44
268.3754 -1.4641 48.3 6.7 42.3 -0.0476 -0.2 0.8 SW J1753.5-0127
270.0701 -25.0049 4.7 17.5 -166.6 0.4594 2.4 12.5 GX 5-1
270.2978 -25.8283 4.2 18.4 -166.7 0.5232 2.8 5.1 GRS 1758-258
274.0512 -13.9681 5.6 9.7 154.3 0.4105 2.1 4.9 GX 17+2
276.0183 -30.3240 3.3 24.2 -176.0 0.7586 3.5 5.5 H1820-303
284.9527 -25.0712 7.9 24.7 161.0 -0.3347 -1.5 10.1 HT1900.1-2455
288.8014 10.9784 3.1 29.2 74.9 1.2550 3.7 2.0 GRS 1915+105
263.1182 -33.7723 36.8 26.1 -149.2 0.0731 0.3 7.4 GX 354-0
307.3261 -3.4660 2.8 41.0 110.9 3.4020 4.0 ------ UNKNOWN
258.1007 30.9227 2.8 39.6 13.5 1.2128 4.1 ------ UNKNOWN
234.1222 -43.1627 2.1 45.2 -122.1 4.7531 5.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-5.368000 15.416000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.1098 -15.6977 4.1 22.2 -88.0 -0.2051 -2.8 8.3 Sco X-1
254.4264 35.3476 15.9 44.6 10.8 0.0780 0.7 1.6 Her X-1
256.1557 -37.9526 5.2 31.5 -139.8 -0.1744 -2.2 10.3 4U 1700-377
256.4465 -36.4435 18.6 30.0 -139.3 0.0476 0.6 1.3 GX 349+2
262.7921 -24.6671 0.0 17.2 -144.3 0.0927 1.6 12.7 GX 1+4
264.4720 -44.3641 0.0 36.6 -153.1 -0.1365 -1.6 12.7 4U 1735-44
268.1689 -1.3793 0.0 6.7 40.4 0.0580 1.0 12.7 SW J1753.5-0127
270.2242 -24.9393 23.8 17.5 -167.1 -0.0270 -0.5 9.0 GX 5-1
270.3208 -25.5699 5.9 18.1 -166.9 0.1076 1.9 10.4 GRS 1758-258
273.8654 -13.9722 6.6 9.6 155.0 0.1038 1.8 9.0 GX 17+2
275.8354 -30.3349 6.7 24.2 -175.7 0.1085 1.7 5.0 H1820-303
284.8304 -24.8646 4.1 24.5 160.8 0.1780 2.8 11.7 HT1900.1-2455
288.5985 11.0092 0.0 29.1 74.5 -0.0183 -0.2 12.4 GRS 1915+105
262.8068 -33.8417 15.7 26.2 -148.7 -0.0481 -0.7 9.1 GX 354-0
288.1049 22.4392 1.1 37.0 59.3 1.3682 10.5 ------ UNKNOWN
277.1990 -5.3365 2.2 11.1 102.2 0.2950 5.4 ------ UNKNOWN
279.5268 -46.4597 2.1 40.2 -169.4 0.4959 5.5 ------ UNKNOWN
231.7320 29.6788 2.7 50.1 -15.3 0.5220 4.3 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
107.964600 962.545500
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.5300 35.4317 6.9 31.9 -36.4 -1.1565 -1.7 6.4 Her X-1
268.3153 -1.4283 11.3 30.7 -116.5 0.8999 1.0 3.5 SW J1753.5-0127
270.1375 -25.1042 11.3 50.6 -136.9 3.0611 1.0 8.1 GX 5-1
270.2101 -25.6271 6.5 51.1 -137.2 5.6420 1.8 8.6 GRS 1758-258
274.0065 -14.0698 32.7 39.0 -136.0 -0.3681 -0.4 2.0 GX 17+2
275.9340 -30.3684 7.6 54.1 -145.1 5.3929 1.5 0.5 H1820-303
284.9328 -24.9393 5.7 47.5 -154.1 -2.7873 -2.0 5.7 HT1900.1-2455
288.7900 10.9726 1.4 11.5 -161.6 4.7206 8.5 1.7 GRS 1915+105
299.5901 35.1845 2.0 16.2 57.7 3.2342 5.7 1.0 Cyg X-1
308.1272 40.9488 1.1 25.1 59.7 7.5845 10.7 0.8 Cyg X-3
325.9847 38.4321 9.2 36.1 76.9 1.8253 1.3 11.0 Cyg X-2
325.3514 61.2894 4.2 46.5 45.6 6.5011 2.7 ------ UNKNOWN
294.8354 44.5879 2.5 22.8 34.5 2.6594 4.7 ------ UNKNOWN
305.8022 -30.5131 4.1 55.6 -176.5 7.0601 2.9 ------ UNKNOWN
278.9541 -2.2290 2.7 26.2 -137.0 2.5991 4.3 ------ UNKNOWN
284.0534 -34.6714 3.7 57.2 -154.1 11.3516 3.1 ------ UNKNOWN
Plot creation:
Sat Jan 20 09:23:21 EST 2018