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
268.7041 -25.7915 0.0051 53.3691 -7.3856 11.3635578 38.065 TRIG_00856977
Foreground time interval of the image:
-7.288 16.013 (delta_t = 23.301 [sec])
Background time interval of the image:
-239.288 -7.288 (delta_t = 232.000 [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
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 -7.288 sec. to 28.712 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.890869 ( -0.0630345 0.0620739 )
Norm@50keV : 2.16686E-02 ( -0.000816866 0.000810974 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.33 using 59 PHA bins.
# Reduced chi-squared = 0.8128 for 57 degrees of freedom
# Null hypothesis probability = 8.427770e-01
Photon flux (15-150 keV) in 36 sec: 2.48691 ( -0.09358 0.09404 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.78663e-06 ( -2.9497e-07 2.94975e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -7.288 sec. to 28.712 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.795173 ( -0.254798 0.118546 )
Epeak [keV] : 833.089 ( -833.089 -833.089 )
Norm@50keV : 2.35697E-02 ( -0.00113673 0.00572401 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.89 using 59 PHA bins.
# Reduced chi-squared = 0.8194 for 56 degrees of freedom
# Null hypothesis probability = 8.304687e-01
Photon flux (15-150 keV) in 36 sec: 2.47504 ( -0.09782 0.08829 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.77673e-06 ( -2.96793e-07 2.96305e-07 ) ergs/cm2
Band function
Time interval is from -7.288 sec. to 28.712 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] : 27.3751 ( )
R^2/D10^2 : 4.68474E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 170.05 using 59 PHA bins.
# Reduced chi-squared = 2.9834 for 57 degrees of freedom
# Null hypothesis probability = 3.496549e-13
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.088e-07 1.501e-08
25- 50 1.238e-06 7.110e-08
50-150 6.752e-06 2.862e-07
15-150 8.199e-06 3.186e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 10.9135 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 395.87 using 59 PHA bins.
# Reduced chi-squared = 6.9451 for 57 degrees of freedom
# Null hypothesis probability = 3.149273e-52
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.783e-07 3.780e-08
25- 50 1.882e-06 7.524e-08
50-150 4.127e-06 1.602e-07
15-150 6.988e-06 2.628e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.84293 (-1.49513 1.71545)
R1^2/D10^2 : 0.564093 (-0.208672 0.373071)
kT2 [keV] : 43.1521 (-5.53558 8.89283)
R2^2/D10^2 : 1.06166E-02 (-0.00439013 0.00546627)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.34 using 59 PHA bins.
# Reduced chi-squared = 0.8061 for 55 degrees of freedom
# Null hypothesis probability = 8.476108e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.854e-07 8.725e-08
25- 50 1.574e-06 1.948e-07
50-150 6.815e-06 7.506e-07
15-150 8.874e-06 8.964e-07
Peak spectrum fit
Power-law model
Time interval is from -0.288 sec. to 0.712 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.633652 ( -0.0907421 0.0886879 )
Norm@50keV : 0.153240 ( -0.00858942 0.00849813 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.19 using 59 PHA bins.
# Reduced chi-squared = 0.8630 for 57 degrees of freedom
# Null hypothesis probability = 7.593980e-01
Photon flux (15-150 keV) in 1 sec: 17.8227 ( -0.9245 0.9254 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.92872e-06 ( -9.9525e-08 9.96165e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.288 sec. to 0.712 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.508824 ( -0.378072 0.159509 )
Epeak [keV] : 797.267 ( -797.267 -797.267 )
Norm@50keV : 0.171104 ( -0.0332553 0.0651473 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.84 using 59 PHA bins.
# Reduced chi-squared = 0.8721 for 56 degrees of freedom
# Null hypothesis probability = 7.403182e-01
Photon flux (15-150 keV) in 1 sec: 17.7794 ( -0.9309 0.9282 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.92983e-06 ( -9.99189e-08 1.00048e-07 ) ergs/cm2
Band function
Time interval is from -0.288 sec. to 0.712 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] : 31.0520 (-2.23214 2.54673)
R^2/D10^2 : 0.258162 (-0.0513565 0.0612573)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 92.15 using 59 PHA bins.
# Reduced chi-squared = 1.617 for 57 degrees of freedom
# Null hypothesis probability = 2.203889e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.812e-08 3.930e-09
25- 50 2.384e-07 2.160e-08
50-150 1.601e-06 1.055e-07
15-150 1.877e-06 1.040e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 67.2609 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 327.91 using 59 PHA bins.
# Reduced chi-squared = 5.7529 for 57 degrees of freedom
# Null hypothesis probability = 1.046677e-39
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.675e-07 1.070e-08
25- 50 3.222e-07 2.340e-08
50-150 7.066e-07 1.452e-07
15-150 1.196e-06 1.716e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.81452 (-2.33659 3.26588)
R1^2/D10^2 : 4.17362 (-2.42911 7.18437)
kT2 [keV] : 43.6116 (-6.61333 13.1277)
R2^2/D10^2 : 9.15593E-02 (-0.0468473 0.0552239)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.17 using 59 PHA bins.
# Reduced chi-squared = 0.8757 for 55 degrees of freedom
# Null hypothesis probability = 7.312096e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.353e-08 3.271e-08
25- 50 2.758e-07 7.835e-08
50-150 1.606e-06 2.825e-07
15-150 1.966e-06 3.330e-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: 0.875300 ( -0.057001 0.0562245 )
Norm@50keV : 3.25668E-02 ( -0.00111722 0.00111016 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.33 using 59 PHA bins.
# Reduced chi-squared = 0.8829 for 57 degrees of freedom
# Null hypothesis probability = 7.217443e-01
Photon flux (15-150 keV) in 23.3 sec: 3.73765 ( -0.127376 0.127726 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.5988e-06 ( -2.64737e-07 2.64816e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.733655 ( -0.234309 0.176955 )
Epeak [keV] : 590.987 ( -590.987 -590.987 )
Norm@50keV : 3.68947E-02 ( -0.00502956 0.00818766 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.17 using 59 PHA bins.
# Reduced chi-squared = 0.8781 for 56 degrees of freedom
# Null hypothesis probability = 7.289297e-01
Photon flux (15-150 keV) in 23.3 sec: 3.74222 3.71286 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 8.59139e-06 ( -2.66808e-07 2.66412e-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) = 1.51e-06
S(50-100 keV) = 3.26e-06
T90 vs. Hardness ratio plot
T90 = 13 sec.
Hardness ratio (energy fluence ratio) = 2.15894
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 2.08241
Count Ratio (50-100 keV) / (15-25 keV) = 2.8686
Mask shadow pattern
IMX = 1.333826326491719E+00, IMY = 1.728940634877155E-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:
-239.288000 -7.288000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
262.9703 -24.7811 25.9 58.6 -8.5 0.5864 0.4 3.0 GX 1+4
264.6837 -44.5762 9.9 52.1 -31.3 0.8048 1.2 8.0 4U 1735-44
270.4582 -25.0619 6.1 52.1 -5.8 1.0904 1.9 9.5 GX 5-1
270.3855 -25.7612 17.1 52.0 -6.7 -0.3772 -0.7 4.6 GRS 1758-258
274.0130 -14.0310 78.2 53.5 8.5 -0.1216 -0.1 0.5 GX 17+2
276.0176 -30.4123 7.2 45.8 -10.7 0.7270 1.6 5.5 H1820-303
285.0359 -24.9249 26.1 39.7 0.3 0.1702 0.4 0.3 HT1900.1-2455
262.9961 -33.9781 10.4 55.6 -18.8 -0.8698 -1.1 8.6 GX 354-0
26.2217 -8.7497 2.8 56.8 174.0 5.1419 4.1 ------ UNKNOWN
271.7807 -19.3274 2.4 53.1 1.4 3.0754 4.7 ------ UNKNOWN
350.9705 -52.5631 2.4 27.2 -115.1 1.4176 4.8 ------ UNKNOWN
337.6478 -54.9427 2.5 25.3 -96.9 1.3705 4.7 ------ UNKNOWN
22.4457 -58.7385 3.7 45.4 -121.6 3.2723 3.2 ------ UNKNOWN
28.9297 -53.6645 3.2 48.1 -129.3 3.8732 3.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-7.288000 16.012590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
262.9893 -24.7884 3.9 58.6 -8.5 -2.0057 -2.9 2.8 GX 1+4
264.8863 -44.4013 8.1 52.0 -31.1 0.3810 1.4 6.8 4U 1735-44
270.2675 -25.0726 118.7 52.3 -5.9 0.0258 0.1 1.0 GX 5-1
270.2992 -25.7448 22.4 52.0 -6.7 0.1391 0.5 0.2 GRS 1758-258
273.9979 -13.9411 7.4 53.5 8.6 0.6991 1.6 5.7 GX 17+2
275.7489 -30.4030 5.5 46.1 -10.8 -0.3627 -2.1 9.4 H1820-303
285.1119 -24.8212 5.1 39.6 0.5 0.2922 2.2 7.3 HT1900.1-2455
263.0322 -33.7534 7.1 55.6 -18.6 0.5972 1.6 5.3 GX 354-0
268.7039 -25.7915 0.3 53.4 -7.4 11.3476 37.7 ------ UNKNOWN
268.8633 -26.8194 2.7 52.9 -8.5 1.2800 4.3 ------ UNKNOWN
3.3707 -49.3693 1.8 31.8 -129.5 0.6712 6.5 ------ UNKNOWN
37.1101 -32.0538 2.3 56.8 -155.6 2.1745 5.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
103.812590 155.012610
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9742 -15.6201 0.6 24.4 -69.3 2.2465 19.4 1.2 Sco X-1
255.9703 -37.8760 11.3 16.2 -140.6 0.1002 1.0 2.1 4U 1700-377
256.2565 -36.4406 257.3 15.1 -137.3 0.0043 0.0 8.7 GX 349+2
263.0092 -24.7239 4.1 5.3 -78.8 0.2712 2.8 1.3 GX 1+4
264.7035 -44.3540 12.4 18.8 -170.3 0.0847 0.9 6.0 4U 1735-44
268.2317 -1.4915 10.7 24.3 -0.5 -0.1066 -1.1 8.5 SW J1753.5-0127
270.2476 -25.1930 5.4 1.5 67.1 0.2235 2.4 7.1 GX 5-1
270.3703 -25.6751 7.6 1.5 86.2 0.1902 2.0 5.5 GRS 1758-258
273.8464 -13.8923 0.0 12.8 23.6 -0.0528 -0.6 12.7 GX 17+2
275.7508 -30.3597 4.9 7.7 128.7 0.2148 2.4 9.0 H1820-303
285.1782 -24.7565 0.0 14.9 90.3 -0.1576 -1.5 12.5 HT1900.1-2455
288.6402 11.0937 7.5 41.7 30.9 0.3125 1.5 12.9 GRS 1915+105
262.9199 -33.9158 5.0 9.5 -148.8 0.2062 2.3 6.0 GX 354-0
Plot creation:
Fri Oct 26 12:29:42 EDT 2018