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
117.8268 -45.8779 0.0158 49.8054 3.7520 3.8570092 12.086 TRIG_00893808
Foreground time interval of the image:
-25.200 44.800 (delta_t = 70.000 [sec])
Background time interval of the image:
-239.200 -25.200 (delta_t = 214.000 [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
8 ms binning
From T100_start-3 s to T100_start+3 s
2 ms binning
From T100_start-1 s to T100_start+1 s
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 -25.200 sec. to 44.800 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.22042 ( -0.202436 0.196324 )
Norm@50keV : 3.79671E-03 ( -0.000438344 0.000434765 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.80 using 59 PHA bins.
# Reduced chi-squared = 0.9088 for 57 degrees of freedom
# Null hypothesis probability = 6.698382e-01
Photon flux (15-150 keV) in 70 sec: 0.446982 ( -0.055991 0.056556 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.68138e-06 ( -3.0422e-07 3.04473e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -25.200 sec. to 44.800 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.917786 ( -0.909618 0.398436 )
Epeak [keV] : 221.131 ( -221.135 -221.135 )
Norm@50keV : 5.05996E-03 ( -0.00194604 0.00627187 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.36 using 59 PHA bins.
# Reduced chi-squared = 0.9172 for 56 degrees of freedom
# Null hypothesis probability = 6.507826e-01
Photon flux (15-150 keV) in 70 sec: 0.438935 ( -0.059747 0.059566 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.66096e-06 ( -3.10958e-07 3.09599e-07 ) ergs/cm2
Band function
Time interval is from -25.200 sec. to 44.800 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] : 22.4595 (-2.90706 3.57967)
R^2/D10^2 : 1.39666E-02 (-0.00544065 0.00835308)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.40 using 59 PHA bins.
# Reduced chi-squared = 1.112 for 57 degrees of freedom
# Null hypothesis probability = 2.609590e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.040e-08 2.030e-08
25- 50 4.838e-07 1.015e-07
50-150 1.824e-06 3.391e-07
15-150 2.398e-06 3.598e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-28.7984 -200)
Norm : 1.94579 (-0.22065 0.22065)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.32 using 59 PHA bins.
# Reduced chi-squared = 1.076 for 57 degrees of freedom
# Null hypothesis probability = 3.239033e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.393e-07 1.615e-07
25- 50 6.527e-07 3.581e-07
50-150 1.432e-06 7.213e-07
15-150 2.424e-06 1.178e-06
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.96719 (-1.59138 2.69503)
R1^2/D10^2 : 1.40455 (-1.1704 7.38719)
kT2 [keV] : 27.0252 (-4.33168 6.6889)
R2^2/D10^2 : 7.04547E-03 (-0.00367441 0.00574873)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.99 using 59 PHA bins.
# Reduced chi-squared = 0.8725 for 55 degrees of freedom
# Null hypothesis probability = 7.373072e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.928e-07 1.483e-07
25- 50 5.029e-07 1.515e-07
50-150 1.890e-06 6.083e-07
15-150 2.686e-06 7.473e-07
Peak spectrum fit
Power-law model
Time interval is from -0.200 sec. to 0.800 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.42830 ( -0.58604 0.61119 )
Norm@50keV : 1.06214E-02 ( -0.00373834 0.00373816 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.34 using 59 PHA bins.
# Reduced chi-squared = 1.199 for 57 degrees of freedom
# Null hypothesis probability = 1.443969e-01
Photon flux (15-150 keV) in 1 sec: 1.30204 ( -0.488792 0.50181 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.0207e-07 ( -3.70271e-08 3.72778e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.200 sec. to 0.800 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.99987 ( 9.99996 6.47343 )
Epeak [keV] : 68.6168 ( -8.37877 9.81709 )
Norm@50keV : 108.389 ( -108.188 307.708 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.91 using 59 PHA bins.
# Reduced chi-squared = 1.088 for 56 degrees of freedom
# Null hypothesis probability = 3.035969e-01
Photon flux (15-150 keV) in 1 sec: 0.830355 ( -0.229918 0.322865 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.81075e-08 ( 0 0 ) ergs/cm2
Band function
Time interval is from -0.200 sec. to 0.800 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] : 19.6959 (-4.61233 6.96659)
R^2/D10^2 : 6.63616E-02 (-0.0672276 0.104204)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.89 using 59 PHA bins.
# Reduced chi-squared = 1.138 for 57 degrees of freedom
# Null hypothesis probability = 2.208104e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.584e-08 1.119e-08
25- 50 1.086e-08 8.160e-09
50-150 4.856e-10 6.045e-10
15-150 2.719e-08 1.864e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-126.216 -199.363)
Norm : 5.51814 (-1.93118 2.13174)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.12 using 59 PHA bins.
# Reduced chi-squared = 1.195 for 57 degrees of freedom
# Null hypothesis probability = 1.486871e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.374e-08 8.425e-09
25- 50 2.643e-08 1.630e-08
50-150 5.797e-08 3.644e-08
15-150 9.814e-08 6.095e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.53891 (-2.59205 11.595)
R1^2/D10^2 : 171.908 (-170.867 -170.867)
kT2 [keV] : 20.7181 (-5.05934 8.18784)
R2^2/D10^2 : 5.31061E-02 (-0.0372775 0.0876955)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.43 using 59 PHA bins.
# Reduced chi-squared = 1.135 for 55 degrees of freedom
# Null hypothesis probability = 2.291690e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.487e-08 9.660e-09
25- 50 2.290e-08 1.382e-08
50-150 7.054e-08 4.622e-08
15-150 1.083e-07 6.075e-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: 1.22042 ( -0.202436 0.196324 )
Norm@50keV : 3.79671E-03 ( -0.000438344 0.000434765 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.80 using 59 PHA bins.
# Reduced chi-squared = 0.9088 for 57 degrees of freedom
# Null hypothesis probability = 6.698382e-01
Photon flux (15-150 keV) in 70 sec: 0.446978 ( -0.0559905 0.0565492 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.68104e-06 ( -3.04155e-07 3.04687e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.923366 ( -0.911265 0.397114 )
Epeak [keV] : 222.036 ( -221.169 -221.169 )
Norm@50keV : 5.03794E-03 ( -0.00188492 0.00627198 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.36 using 59 PHA bins.
# Reduced chi-squared = 0.9172 for 56 degrees of freedom
# Null hypothesis probability = 6.507254e-01
Photon flux (15-150 keV) in 70 sec: 0.438908 ( -0.059733 0.059808 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.66215e-06 ( -3.1115e-07 3.09813e-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) = 5.70e-07
S(50-100 keV) = 9.80e-07
T90 vs. Hardness ratio plot
T90 = 63 sec.
Hardness ratio (energy fluence ratio) = 1.7193
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.53489
Count Ratio (50-100 keV) / (15-25 keV) = 1.94085
Mask shadow pattern
IMX = 1.181030750815701E+00, IMY = -7.745111219418808E-02
TIME vs. PHA plot around the trigger time
TIME vs. DetID plot around the trigger time
100 us light curve (15-350 keV)
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:
-239.200000 -25.200000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5568 -40.5437 2.3 46.4 22.0 3.5083 5.0 1.4 Vela X-1
170.3144 -60.7013 3.3 17.2 19.9 0.9595 3.5 4.7 Cen X-3
186.9241 -62.6378 6.3 9.1 23.0 0.5409 1.8 10.8 GX 301-2
244.9775 -15.6369 1.7 54.4 164.8 11.1588 6.7 0.2 Sco X-1
256.0609 -38.0349 0.0 38.5 -169.2 0.4206 1.0 12.0 4U 1700-377
256.4978 -36.5337 6.4 39.9 -170.0 0.7993 1.8 7.3 GX 349+2
262.9529 -24.5680 8.4 53.1 -171.5 -1.2835 -1.4 11.1 GX 1+4
264.7181 -44.3887 6.0 37.2 -154.5 -0.7901 -1.9 3.8 4U 1735-44
270.3867 -25.0298 4.2 55.9 -164.0 3.1964 2.7 6.3 GX 5-1
270.4039 -25.7734 5.8 55.2 -163.5 2.2376 2.0 5.8 GRS 1758-258
275.9270 -30.3605 16.0 53.8 -155.5 0.7343 0.7 0.4 H1820-303
263.1123 -33.8803 11.7 45.1 -165.3 -0.5851 -1.0 6.7 GX 354-0
232.7855 -15.0450 3.2 51.5 150.5 5.7104 3.6 ------ UNKNOWN
139.0143 -41.3293 2.9 44.3 24.3 2.3199 4.0 ------ UNKNOWN
203.8169 -46.0954 2.6 17.3 110.5 1.4422 4.5 ------ UNKNOWN
207.1200 -63.2568 1.1 0.0 -171.8 2.8726 10.3 ------ UNKNOWN
297.1158 -51.9806 3.6 45.3 -122.0 4.1768 3.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-25.200000 44.800000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.7064 -40.4924 44.4 46.4 22.1 -0.0833 -0.3 8.9 Vela X-1
170.0055 -60.6457 10.9 17.4 19.9 -0.1503 -1.1 9.2 Cen X-3
186.3447 -62.8253 6.4 9.4 21.5 0.2504 1.8 9.2 GX 301-2
244.8209 -15.6610 6.2 54.3 164.6 1.3416 1.9 9.2 Sco X-1
256.0339 -37.8256 4.8 38.7 -169.4 0.4993 2.4 2.5 4U 1700-377
256.3559 -36.2554 4.5 40.1 -170.4 0.5752 2.6 10.8 GX 349+2
263.0422 -24.7181 6.3 53.0 -171.4 0.8178 1.8 2.4 GX 1+4
264.6633 -44.3696 3.7 37.2 -154.5 0.6451 3.1 5.9 4U 1735-44
270.1828 -25.0979 4.7 55.7 -164.1 -1.4479 -2.5 5.6 GX 5-1
270.3060 -25.7608 6.9 55.2 -163.6 -0.9014 -1.7 1.1 GRS 1758-258
275.8033 -30.3444 11.0 53.7 -155.6 -0.5327 -1.0 6.4 H1820-303
262.9015 -33.6475 0.0 45.2 -165.7 -0.3771 -1.4 12.1 GX 354-0
175.0732 -48.8934 2.1 22.5 52.6 0.9172 5.6 ------ UNKNOWN
117.8268 -45.8779 0.9 49.8 3.8 3.8572 12.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
596.000600 659.489300
660.800000 720.435100
720.800000 962.819100
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
270.1327 -24.9478 75.4 37.1 88.5 0.1460 0.2 11.4 GX 5-1
270.3262 -25.6248 3.0 36.9 87.4 3.4826 3.9 7.2 GRS 1758-258
274.1210 -14.1133 4.9 35.7 107.8 1.9631 2.4 8.1 GX 17+2
276.0473 -30.2510 13.0 31.9 79.1 0.5979 0.9 9.4 H1820-303
285.2020 -25.0140 8.2 23.5 89.3 0.6434 1.4 10.6 HT1900.1-2455
288.7936 10.9807 3.8 39.7 155.7 2.5082 3.0 2.1 GRS 1915+105
285.3477 -65.7251 2.7 46.3 24.8 3.4559 4.3 ------ UNKNOWN
313.8305 -10.6829 2.9 12.1 -154.7 1.2983 4.0 ------ UNKNOWN
Plot creation:
Thu Apr 11 00:54:56 EDT 2019