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
280.2194 40.3100 0.0224 24.5663 148.5102 0.0672358 8.571 TRIG_00900730
Foreground time interval of the image:
-0.008 0.021 (delta_t = 0.029 [sec])
Background time interval of the image:
-91.579 -0.008 (delta_t = 91.571 [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 0.032000
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 0.032000
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 0.032000
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 -0.008 sec. to 0.312 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.25021 ( -0.213026 0.212448 )
Norm@50keV : 3.79243E-02 ( -0.00476747 0.00475549 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.66 using 59 PHA bins.
# Reduced chi-squared = 0.9764 for 57 degrees of freedom
# Null hypothesis probability = 5.255674e-01
Photon flux (15-150 keV) in 0.32 sec: 4.48561 ( -0.56266 0.56295 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.21462e-07 ( -1.73883e-08 1.75847e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.008 sec. to 0.312 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.04912 ( -0.956696 0.393681 )
Epeak [keV] : 240.147 ( -240.266 -240.266 )
Norm@50keV : 4.79588E-02 ( -0.0479518 0.0968152 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.48 using 59 PHA bins.
# Reduced chi-squared = 0.9907 for 56 degrees of freedom
# Null hypothesis probability = 4.944291e-01
Photon flux (15-150 keV) in 0.32 sec: 4.45732 ( -0.57601 0.57403 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.19627e-07 ( -1.95235e-08 1.82714e-08 ) ergs/cm2
Band function
Time interval is from -0.008 sec. to 0.312 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] : 15.7798 (-2.42079 3.14716)
R^2/D10^2 : 0.449360 (-0.205459 0.342065)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.93 using 59 PHA bins.
# Reduced chi-squared = 1.192 for 57 degrees of freedom
# Null hypothesis probability = 1.524711e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.426e-09 1.786e-09
25- 50 3.087e-08 6.094e-09
50-150 5.345e-08 1.355e-08
15-150 9.175e-08 1.643e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-44.4422 -200)
Norm : 18.2776 (-2.30483 2.30483)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.50 using 59 PHA bins.
# Reduced chi-squared = 1.061 for 57 degrees of freedom
# Null hypothesis probability = 3.506326e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.457e-08 8.134e-09
25- 50 2.802e-08 1.543e-08
50-150 6.146e-08 3.429e-08
15-150 1.040e-07 5.754e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 10.6397 (-2.95005 3.04277)
R1^2/D10^2 : 1.30450 (-0.548194 1.8893)
kT2 [keV] : 63.1752 (-39.5816 -67.4157)
R2^2/D10^2 : 4.85352E-03 (-0.00335436 0.0469349)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.36 using 59 PHA bins.
# Reduced chi-squared = 0.9702 for 55 degrees of freedom
# Null hypothesis probability = 5.374920e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.036e-08 4.542e-09
25- 50 3.078e-08 1.362e-08
50-150 8.003e-08 4.136e-08
15-150 1.212e-07 5.553e-08
Peak spectrum fit
Power-law model
Time interval is from -0.316 sec. to 0.684 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.29047 ( -0.296961 0.292141 )
Norm@50keV : 1.34318E-02 ( -0.00209979 0.00209324 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.85 using 59 PHA bins.
# Reduced chi-squared = 0.8570 for 57 degrees of freedom
# Null hypothesis probability = 7.703566e-01
Photon flux (15-150 keV) in 1 sec: 1.59969 ( -0.25302 0.25382 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.33058e-07 ( -2.3675e-08 2.40289e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.316 sec. to 0.684 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.29860 ( -0.490238 0.283461 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 1.34210E-02 ( -0.00210326 0.0140707 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.87 using 59 PHA bins.
# Reduced chi-squared = 0.8726 for 56 degrees of freedom
# Null hypothesis probability = 7.393461e-01
Photon flux (15-150 keV) in 1 sec: 1.59944 ( -0.25333 0.25366 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.34029e-07 ( -3.21276e-08 3.07569e-08 ) ergs/cm2
Band function
Time interval is from -0.316 sec. to 0.684 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] : 16.6380 (-3.63062 5.49135)
R^2/D10^2 : 0.126700 (-0.0769069 0.167405)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.48 using 59 PHA bins.
# Reduced chi-squared = 1.114 for 57 degrees of freedom
# Null hypothesis probability = 2.586466e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.184e-09 2.444e-09
25- 50 3.124e-08 7.945e-09
50-150 6.130e-08 2.093e-08
15-150 9.972e-08 2.880e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-65.0872 -200)
Norm : 6.56375 (-1.03131 1.03131)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.98 using 59 PHA bins.
# Reduced chi-squared = 0.9119 for 57 degrees of freedom
# Null hypothesis probability = 6.635338e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.634e-08 9.310e-09
25- 50 3.144e-08 1.787e-08
50-150 6.896e-08 3.914e-08
15-150 1.167e-07 6.630e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.20419 (-4.42965 3.79422)
R1^2/D10^2 : 0.716527 (-0.461709 5.34783)
kT2 [keV] : 63.6530 (-43.9688 -69.3995)
R2^2/D10^2 : 2.03969E-03 (-0.0013449 0.0258624)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.31 using 59 PHA bins.
# Reduced chi-squared = 0.8965 for 55 degrees of freedom
# Null hypothesis probability = 6.909104e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.269e-08 7.465e-09
25- 50 3.193e-08 1.737e-08
50-150 9.547e-08 5.175e-08
15-150 1.401e-07 6.800e-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: 0.922843 ( -0.320955 0.309871 )
Norm@50keV : 0.121422 ( -0.0248468 0.0247899 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.96 using 59 PHA bins.
# Reduced chi-squared = 1.227 for 57 degrees of freedom
# Null hypothesis probability = 1.162410e-01
Photon flux (15-150 keV) in 0.0286 sec: 13.9408 ( -2.85693 2.85872 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.86317e-08 ( -8.63546e-09 8.70043e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.201933 ( -1.49642 0.918883 )
Epeak [keV] : 143.253 ( -143.252 -143.252 )
Norm@50keV : 0.259728 ( -0.156009 0.890588 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.80 using 59 PHA bins.
# Reduced chi-squared = 1.229 for 56 degrees of freedom
# Null hypothesis probability = 1.169951e-01
Photon flux (15-150 keV) in 0.0286 sec: 13.8922 ( -2.8663 2.8646 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.81813e-08 ( 0 0 ) 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) = 2.63e-08
S(50-100 keV) = 4.42e-08
T90 vs. Hardness ratio plot
T90 = 0.191999912261963 sec.
Hardness ratio (energy fluence ratio) = 1.68061
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 2.26528
Count Ratio (50-100 keV) / (15-25 keV) = 1.72691
Mask shadow pattern
IMX = -3.898055216540743E-01, IMY = -2.387781188044245E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
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:
-91.579400 -0.008000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.3358 35.2215 3.1 41.7 125.4 -3.2393 -3.7 9.4 Her X-1
268.3336 -1.3320 12.2 39.0 63.7 0.6373 0.9 7.5 SW J1753.5-0127
274.1860 -14.1686 5.4 44.5 44.2 1.2627 2.1 13.1 GX 17+2
284.8985 -24.8859 4.7 49.5 25.2 1.6084 2.5 7.8 HT1900.1-2455
288.7973 10.9329 76.1 15.7 52.1 0.0323 0.2 0.8 GRS 1915+105
299.5905 35.2252 1.7 12.9 -174.7 1.4121 6.9 1.4 Cyg X-1
308.0695 41.1004 5.4 19.9 -155.0 -0.4267 -2.1 9.1 Cyg X-3
326.2297 38.2843 9.2 27.5 -124.4 0.3204 1.3 3.5 Cyg X-2
281.0810 -22.0418 2.5 48.1 30.9 2.5761 4.7 ------ UNKNOWN
273.1575 35.9207 2.9 27.0 133.2 1.1277 4.0 ------ UNKNOWN
293.4654 23.4504 2.4 6.2 108.5 0.8952 4.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.008000 0.020600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4517 35.3549 16.1 41.6 125.6 0.0197 0.7 0.8 Her X-1
268.2600 -1.5844 5.4 39.2 63.5 0.0486 2.1 10.2 SW J1753.5-0127
273.9688 -14.0043 6.6 44.4 44.5 0.0365 1.7 2.9 GX 17+2
284.8943 -24.8736 4.6 49.5 25.2 0.0581 2.5 8.2 HT1900.1-2455
288.6789 10.7782 0.0 15.9 52.1 0.0018 0.3 12.3 GRS 1915+105
299.7663 35.2305 6.7 12.9 -174.1 -0.0099 -1.7 8.8 Cyg X-1
308.2717 41.1022 27.0 20.0 -154.6 -0.0025 -0.4 11.6 Cyg X-3
325.9862 38.2056 10.1 27.3 -124.4 -0.0072 -1.1 11.2 Cyg X-2
280.2194 40.3099 1.3 24.6 148.5 0.0672 8.6 ------ UNKNOWN
304.6451 -28.2694 2.3 50.8 1.8 0.0670 5.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
91.020600 502.820590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
326.0680 38.3064 5.2 58.3 -176.2 -7.7220 -2.2 5.0 Cyg X-2
303.2507 -8.1560 2.9 40.3 118.2 10.1058 3.9 ------ UNKNOWN
351.3675 32.1846 2.0 50.3 -151.5 8.9890 5.7 ------ UNKNOWN
Plot creation:
Mon Jun 10 17:02:46 EDT 2019