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
184.7605 -58.0669 0.0083 54.4259 -2.7079 7.1087104 23.135 TRIG_01185505
Foreground time interval of the image:
-14.776 9.224 (delta_t = 24.000 [sec])
Background time interval of the image:
-239.776 -14.776 (delta_t = 225.000 [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 -14.776 sec. to 9.224 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.18944 ( -0.101914 0.100279 )
Norm@50keV : 2.16120E-02 ( -0.00129147 0.00128659 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.54 using 59 bins.
Reduced chi-squared = 0.904211
# Null hypothesis probability of 6.79e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 24 sec: 2.53311 ( -0.16305 0.16377 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.27875e-06 ( -3.12586e-07 3.12914e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -14.776 sec. to 9.224 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.891034 ( -0.449929 0.33998 )
Epeak [keV] : 221.917 ( -98.5595 -221.933 )
Norm@50keV : 2.90586E-02 ( -0.0081877 0.015659 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.03 using 59 bins.
Reduced chi-squared = 0.893393
# Null hypothesis probability of 6.99e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 24 sec: 2.49832 ( -0.16917 0.17012 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.09676e-07 ( -3.84293e-07 3.15994e-07 ) ergs/cm2
Band function
Time interval is from -14.776 sec. to 9.224 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] : 20.8938 (-1.49425 1.672)
R^2/D10^2 : 0.102249 (-0.0234453 0.0293609)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 97.65 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.50e-04 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.028e-07 2.424e-08
25- 50 1.039e-06 9.468e-08
50-150 3.380e-06 2.700e-07
15-150 4.622e-06 3.180e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-8.94465 -200)
Norm : 10.9968 (-0.650668 0.650668)
------------------------------------------------------------
#Fit statistic : Chi-Squared 91.86 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.35e-03 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.575e-07 4.380e-08
25- 50 1.265e-06 8.976e-08
50-150 2.774e-06 2.232e-07
15-150 4.696e-06 5.076e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 11.4480 (-2.80637 2.97401)
R1^2/D10^2 : 0.487969 (-0.219686 0.562124)
kT2 [keV] : 47.1727 (-15.6183 -47.3265)
R2^2/D10^2 : 5.80598E-03 (-0.00468192 0.0153725)
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.18 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.59e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.583e-07 9.322e-08
25- 50 1.213e-06 2.930e-07
50-150 3.641e-06 1.421e-06
15-150 5.212e-06 1.725e-06
Peak spectrum fit
Power-law model
Time interval is from 0.224 sec. to 1.224 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.975316 ( -0.132725 0.129082 )
Norm@50keV : 0.119364 ( -0.00966196 0.00957907 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 40.60 using 59 bins.
Reduced chi-squared = 0.712281
# Null hypothesis probability of 9.51e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 13.7261 ( -1.131 1.1345 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.30236e-06 ( -1.02281e-07 1.02458e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.224 sec. to 1.224 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.658599 ( -0.612399 0.448412 )
Epeak [keV] : 264.391 ( -264.394 -264.394 )
Norm@50keV : 0.161521 ( -0.0489333 0.12064 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 39.64 using 59 bins.
Reduced chi-squared = 0.707857
# Null hypothesis probability of 9.52e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 13.5966 ( -1.1519 1.1553 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.29903e-06 ( -1.03501e-07 1.03364e-07 ) ergs/cm2
Band function
Time interval is from 0.224 sec. to 1.224 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] : 24.1870 (-2.25686 2.63986)
R^2/D10^2 : 0.378532 (-0.106759 0.140301)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 61.09 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.31e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.914e-08 6.465e-09
25- 50 2.183e-07 2.795e-08
50-150 9.506e-07 9.780e-08
15-150 1.208e-06 1.135e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-10.5655 -200)
Norm : 57.8445 (-4.68606 4.68606)
------------------------------------------------------------
#Fit statistic : Chi-Squared 97.11 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.35e-04 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.441e-07 1.380e-08
25- 50 2.772e-07 3.680e-08
50-150 6.079e-07 2.066e-07
15-150 1.029e-06 2.744e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 11.4402 (-7.30543 6.9128)
R1^2/D10^2 : 2.05867 (-1.32066 105.645)
kT2 [keV] : 41.6042 (-16.3164 -41.8923)
R2^2/D10^2 : 5.65453E-02 (-0.0476257 0.247778)
------------------------------------------------------------
#Fit statistic : Chi-Squared 42.53 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.90e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.061e-08 3.663e-08
25- 50 2.515e-07 1.289e-07
50-150 9.773e-07 4.559e-07
15-150 1.299e-06 5.459e-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: 1.18944 ( -0.101914 0.100279 )
Norm@50keV : 2.16120E-02 ( -0.00129147 0.00128659 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.54 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.79e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 24 sec: 2.53304 ( -0.162988 0.163813 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.27813e-06 ( -3.12708e-07 3.12929e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.891031 ( -0.449928 0.339974 )
Epeak [keV] : 221.914 ( -98.5817 -221.933 )
Norm@50keV : 2.90588E-02 ( -0.0081877 0.015659 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.03 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.99e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 24 sec: 2.49816 ( -0.16914 0.17006 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.23901e-06 ( -3.17952e-07 3.20064e-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) = 1.10e-06
S(50-100 keV) = 1.93e-06
T90 vs. Hardness ratio plot
T90 = 17 sec.
Hardness ratio (energy fluence ratio) = 1.75455
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 2.23666
Count Ratio (50-100 keV) / (15-25 keV) = 2.43051
Mask shadow pattern
IMX = 1.396560756530646E+00, IMY = 6.605224315631884E-02
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:
-239.776000 -14.776000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5831 -40.6070 4.2 31.9 -44.4 1.6819 2.7 4.0 Vela X-1
170.3369 -60.6370 4.1 46.7 -3.5 -2.3224 -2.8 1.0 Cen X-3
186.7199 -62.7171 4.9 53.0 2.9 2.4530 2.4 3.6 GX 301-2
37.7264 -29.2353 2.6 45.1 129.1 10.1835 4.4 ------ UNKNOWN
56.4329 2.2302 2.6 56.8 173.9 8.4513 4.4 ------ UNKNOWN
119.9591 -35.3576 3.2 23.3 -66.8 1.9427 3.6 ------ UNKNOWN
101.6182 2.2872 3.2 48.1 -129.1 7.4502 3.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-14.776000 9.224000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.6570 -40.5378 10.2 32.0 -44.5 -0.1126 -1.1 5.9 Vela X-1
170.4328 -60.5888 838.3 46.7 -3.6 0.0021 0.0 4.0 Cen X-3
186.6634 -62.7690 9.7 53.0 3.0 -0.3365 -1.2 0.2 GX 301-2
52.3581 -12.3010 2.3 46.9 159.4 0.8768 4.9 ------ UNKNOWN
98.3784 -65.2544 2.4 20.5 30.1 0.3499 4.7 ------ UNKNOWN
184.7605 -58.0669 0.5 54.4 -2.7 7.1090 23.1 ------ UNKNOWN
68.6156 9.8081 2.3 58.7 -169.3 2.0538 4.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
116.124600 962.354000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5922 -40.6414 3.1 35.4 -132.8 7.2365 3.8 6.0 Vela X-1
170.0199 -60.6685 7.6 7.9 -166.0 1.7268 1.5 9.1 Cen X-3
186.6339 -62.7979 2.4 4.9 119.4 5.1590 4.8 1.8 GX 301-2
176.8136 -35.2669 2.5 23.4 -66.9 6.6843 4.6 ------ UNKNOWN
188.2820 -13.0978 3.3 45.0 -45.5 10.0338 3.5 ------ UNKNOWN
129.7503 -29.1057 3.0 47.3 -127.2 20.9167 3.8 ------ UNKNOWN
Plot creation:
Sat Sep 30 00:44:04 EDT 2023