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
124.6227 33.9950 0.0067 29.0863 -165.3448 1.4673395 28.729 TRIG_01253910
Foreground time interval of the image:
-3.648 10.157 (delta_t = 13.805 [sec])
Background time interval of the image:
-156.443 -3.648 (delta_t = 152.795 [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 0.512000
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 0.512000
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 0.512000
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 -3.648 sec. to 373.028 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.62451 ( -0.0255764 0.0255143 )
Norm@50keV : 9.60437E-03 ( -0.000131926 0.000131782 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 36.54 using 59 bins.
Reduced chi-squared = 0.641053
# Null hypothesis probability of 9.84e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 376.7 sec: 1.24380 ( -0.02216 0.02227 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.37439e-05 ( -4.45346e-07 4.45806e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -3.648 sec. to 373.028 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.45014 ( -0.108286 0.105988 )
Epeak [keV] : 193.985 ( -50.5613 191.316 )
Norm@50keV : 1.13027E-02 ( -0.00104296 0.00117146 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 28.63 using 59 bins.
Reduced chi-squared = 0.51125
# Null hypothesis probability of 9.99e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 376.7 sec: 1.21947 ( -0.02603 0.02626 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.34261e-05 ( -4.82911e-07 4.82952e-07 ) ergs/cm2
Band function
Time interval is from -3.648 sec. to 373.028 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] : 18.6186 ( )
R^2/D10^2 : 5.95582E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 1192.99 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.44e-212 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.540e-06 4.577e-08
25- 50 7.300e-06 1.488e-07
50-150 1.852e-05 3.447e-07
15-150 2.736e-05 3.710e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-8.37977 -200)
Norm : 4.92907 (-0.0648662 0.0648662)
------------------------------------------------------------
#Fit statistic : Chi-Squared 37.31 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.80e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.626e-06 8.099e-08
25- 50 8.899e-06 1.526e-07
50-150 1.952e-05 3.371e-07
15-150 3.304e-05 5.387e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.96638 (-0.423727 0.443509)
R1^2/D10^2 : 0.812963 (-0.142042 0.180011)
kT2 [keV] : 28.9949 (-1.32776 1.53173)
R2^2/D10^2 : 9.78773E-03 (-0.00171848 0.00191428)
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.97 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.66e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.999e-06 2.143e-07
25- 50 9.098e-06 2.147e-07
50-150 1.968e-05 4.313e-07
15-150 3.278e-05 6.310e-07
Peak spectrum fit
Power-law model
Time interval is from 76.052 sec. to 77.052 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.49701 ( -0.0481667 0.0482754 )
Norm@50keV : 0.119582 ( -0.00314338 0.00314291 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.32 using 59 bins.
Reduced chi-squared = 0.952982
# Null hypothesis probability of 5.76e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 14.9170 ( -0.4235 0.4243 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.13512e-06 ( -3.1753e-08 3.1824e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 76.052 sec. to 77.052 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.22362 ( -0.20228 0.193412 )
Epeak [keV] : 154.422 ( -43.3565 221.113 )
Norm@50keV : 0.160274 ( -0.0293128 0.0377613 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 48.41 using 59 bins.
Reduced chi-squared = 0.864464
# Null hypothesis probability of 7.54e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 14.6529 ( -0.4584 0.4598 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.13724e-07 ( -3.84034e-08 3.19002e-08 ) ergs/cm2
Band function
Time interval is from 76.052 sec. to 77.052 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] : 16.2356 ( )
R^2/D10^2 : 1.25961 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 327.87 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.07e-39 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.842e-08 3.515e-09
25- 50 2.915e-07 1.030e-08
50-150 5.400e-07 2.585e-08
15-150 9.000e-07 2.930e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-8.71572 -200)
Norm : 61.2520 (-1.60609 1.60609)
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.59 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.91e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.525e-07 4.550e-09
25- 50 2.934e-07 8.600e-09
50-150 6.435e-07 1.865e-08
15-150 1.089e-06 3.200e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.47189 (-0.93713 0.981247)
R1^2/D10^2 : 7.89478 (-2.19783 3.50393)
kT2 [keV] : 30.8557 (-3.86847 5.74152)
R2^2/D10^2 : 0.102527 (-0.0454592 0.0647255)
------------------------------------------------------------
#Fit statistic : Chi-Squared 59.34 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.20e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.216e-07 1.045e-08
25- 50 2.992e-07 1.665e-08
50-150 6.874e-07 7.155e-08
15-150 1.108e-06 7.495e-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: 1.31588 ( -0.090296 0.0897547 )
Norm@50keV : 7.15662E-03 ( -0.000378039 0.000378039 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.33 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.63e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 13.8 sec: 0.856347 ( -0.0474667 0.0475518 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.72218e-07 ( -5.53914e-08 5.55508e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.715204 ( -0.430421 0.389487 )
Epeak [keV] : 113.536 ( -27.1279 106.044 )
Norm@50keV : 1.38990E-02 ( -0.00476966 0.00819017 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.09 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.97e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 13.8 sec: 0.834477 ( -0.049533 0.049544 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.37902e-07 ( -6.11588e-08 6.068e-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) = 8.85e-06
S(50-100 keV) = 1.15e-05
T90 vs. Hardness ratio plot
T90 = 114.931999921799 sec.
Hardness ratio (energy fluence ratio) = 1.29944
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.26842
Count Ratio (50-100 keV) / (15-25 keV) = 0.902441
Mask shadow pattern
IMX = -5.381822438423821E-01, IMY = 1.407399230798909E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.512000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.512000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.512000
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:
-156.443400 -3.648000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6361 22.0239 1.4 39.9 127.2 6.0964 8.5 0.6 Crab
135.4504 -40.5079 5.5 47.5 -6.3 0.8386 2.1 4.5 Vela X-1
89.4123 -3.7321 2.5 32.8 83.5 2.1224 4.7 ------ UNKNOWN
129.0911 -38.8238 2.6 44.6 -0.4 1.6968 4.5 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-3.648000 10.156600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.5955 21.8556 14.9 39.9 127.0 0.1000 0.8 9.8 Crab
135.4464 -40.5222 3.5 47.5 -6.3 0.2931 3.3 4.2 Vela X-1
99.8233 50.8858 2.1 49.1 171.0 0.6639 5.5 ------ UNKNOWN
127.5182 2.9374 2.6 6.8 -63.2 0.2003 4.5 ------ UNKNOWN
124.6227 33.9950 0.4 29.1 -165.3 1.4675 28.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
93.356590 962.717100
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6423 21.9963 1.2 37.9 58.0 30.4852 9.3 1.2 Crab
95.2701 60.7696 2.8 32.8 129.3 8.1617 4.1 ------ UNKNOWN
98.3355 20.4023 3.2 26.9 42.1 5.0300 3.6 ------ UNKNOWN
124.6507 33.9904 1.3 0.0 -157.0 11.1924 9.0 ------ UNKNOWN
181.5906 36.0673 2.7 46.0 -134.1 12.5323 4.3 ------ UNKNOWN
Plot creation:
Sat Oct 19 18:14:55 EDT 2024