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
76.2239 19.5514 0.0042 11.1193 147.8299 3.5366966 46.122 TRIG_01182085
Foreground time interval of the image:
-6.040 11.581 (delta_t = 17.621 [sec])
Background time interval of the image:
-37.419 -6.040 (delta_t = 31.379 [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 -6.040 sec. to 230.344 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.61202 ( -0.0716393 0.0719884 )
Norm@50keV : 2.22647E-03 ( -8.7581e-05 8.74147e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 66.27 using 59 bins.
Reduced chi-squared = 1.16263
# Null hypothesis probability of 1.87e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 236.4 sec: 0.287197 ( -0.011668 0.011695 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.91596e-06 ( -2.0589e-07 2.06721e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -6.040 sec. to 230.344 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.27392 ( -0.310759 0.289469 )
Epeak [keV] : 108.272 ( -29.6525 283.352 )
Norm@50keV : 3.27417E-03 ( -0.000900936 0.00135799 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 62.27 using 59 bins.
Reduced chi-squared = 1.11196
# Null hypothesis probability of 2.63e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 236.4 sec: 0.280985 ( -0.012749 0.012775 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.77779e-06 ( -2.37979e-07 2.37173e-07 ) ergs/cm2
Band function
Time interval is from -6.040 sec. to 230.344 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] : 14.3070 ( )
R^2/D10^2 : 3.65710E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 186.33 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.21e-15 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.730e-07 3.002e-08
25- 50 1.417e-06 6.619e-08
50-150 1.931e-06 1.647e-07
15-150 3.721e-06 1.690e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 173.832 (-32.6702 -173.67)
Norm : 1.16547 (-0.0511745 0.0554114)
------------------------------------------------------------
#Fit statistic : Chi-Squared 62.15 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.98e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.975e-07 4.243e-08
25- 50 1.319e-06 1.338e-07
50-150 2.759e-06 7.962e-07
15-150 4.775e-06 8.818e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.86971 (-1.2687 1.28989)
R1^2/D10^2 : 0.205963 (-0.0753935 0.154965)
kT2 [keV] : 27.5209 (-4.88336 8.45247)
R2^2/D10^2 : 2.61762E-03 (-0.00158031 0.00289589)
------------------------------------------------------------
#Fit statistic : Chi-Squared 68.74 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.01e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.157e-07 7.801e-08
25- 50 1.375e-06 1.290e-07
50-150 2.753e-06 5.767e-07
15-150 4.744e-06 7.057e-07
Peak spectrum fit
Power-law model
Time interval is from 0.604 sec. to 1.604 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.789100 ( -0.132065 0.128346 )
Norm@50keV : 2.02557E-02 ( -0.00162017 0.00160982 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.61 using 59 bins.
Reduced chi-squared = 0.887895
# Null hypothesis probability of 7.12e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 2.32896 ( -0.18216 0.18243 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.37821e-07 ( -1.94274e-08 1.95147e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.604 sec. to 1.604 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.115381 ( -0.717188 0.606478 )
Epeak [keV] : 141.512 ( -36.8401 154.383 )
Norm@50keV : 4.86112E-02 ( -0.0211639 0.0447347 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 43.70 using 59 bins.
Reduced chi-squared = 0.780357
# Null hypothesis probability of 8.84e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 2.26498 ( -0.18821 0.18776 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.30893e-07 ( -2.07475e-08 2.06024e-08 ) ergs/cm2
Band function
Time interval is from 0.604 sec. to 1.604 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] : 24.8420 (-2.31506 2.70608)
R^2/D10^2 : 6.22806E-02 (-0.0166806 0.0216182)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.85 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.04e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.699e-09 1.047e-09
25- 50 3.788e-08 4.105e-09
50-150 1.735e-07 2.030e-08
15-150 2.181e-07 2.190e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.362 ( )
Norm : 8.91749 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 137.88 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.19e-08 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.220e-08 3.365e-09
25- 50 4.272e-08 1.473e-08
50-150 9.368e-08 3.364e-08
15-150 1.586e-07 5.742e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 14.9701 (-12.2245 7.1947)
R1^2/D10^2 : 0.150962 (-0.074129 28.0734)
kT2 [keV] : 43.8321 (-42.7889 -45.6708)
R2^2/D10^2 : 7.94801E-03 (-0.0065275 0.0541549)
------------------------------------------------------------
#Fit statistic : Chi-Squared 44.21 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.51e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.928e-09 5.085e-09
25- 50 4.099e-08 2.212e-08
50-150 1.801e-07 9.165e-08
15-150 2.300e-07 1.180e-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: 0.932013 ( -0.0494148 0.0489337 )
Norm@50keV : 1.33745E-02 ( -0.000392968 0.000392128 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 100.20 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.59e-04 with 57 degrees of freedom
Photon flux (15-150 keV) in 17.62 sec: 1.53585 ( -0.0455581 0.0456198 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.61254e-06 ( -7.79659e-08 7.80194e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.197112 ( -0.233116 0.22091 )
Epeak [keV] : 146.980 ( -21.2917 36.7012 )
Norm@50keV : 2.73893E-02 ( -0.0051518 0.00667644 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 63.93 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.18e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 17.62 sec: 1.49038 ( -0.04724 0.04729 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.54315e-06 ( -8.28669e-08 8.23559e-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) = 1.28e-06
S(50-100 keV) = 1.68e-06
T90 vs. Hardness ratio plot
T90 = 175.151999950409 sec.
Hardness ratio (energy fluence ratio) = 1.3125
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.36978
Count Ratio (50-100 keV) / (15-25 keV) = 0.889977
Mask shadow pattern
IMX = -1.663669658110273E-01, IMY = -1.046454836695666E-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:
-37.419400 -6.040000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6423 22.0341 0.7 11.1 -173.2 1.2430 15.5 1.3 Crab
49.2280 -2.8154 2.3 36.8 76.4 1.2490 5.0 ------ UNKNOWN
72.6376 68.1795 2.3 57.7 -178.4 2.3472 5.1 ------ UNKNOWN
101.5101 48.2236 2.2 40.2 -155.1 0.5710 5.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-6.040000 11.580590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.7898 22.0197 49.5 11.1 -172.5 -0.0177 -0.2 8.7 Crab
59.7214 29.1205 2.4 28.7 139.1 0.5294 4.7 ------ UNKNOWN
72.0333 -1.8167 2.4 17.2 48.9 0.3831 4.8 ------ UNKNOWN
68.6641 41.5975 2.1 33.3 165.9 0.5339 5.6 ------ UNKNOWN
76.2239 19.5514 0.2 11.1 147.8 3.5365 46.1 ------ UNKNOWN
74.7163 55.5452 1.9 45.1 179.3 0.8299 6.1 ------ UNKNOWN
97.6184 -42.6899 2.3 55.2 -6.2 1.6796 5.0 ------ UNKNOWN
101.6055 65.7064 2.2 56.1 -164.8 1.5344 5.3 ------ UNKNOWN
116.9411 62.1257 2.1 56.5 -155.7 1.6282 5.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
51.980600 962.143200
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6209 22.0114 0.4 7.3 -102.7 38.5453 30.7 0.7 Crab
39.8456 15.7773 2.2 34.8 97.8 15.5837 5.3 ------ UNKNOWN
103.5914 16.1673 2.3 26.2 -78.9 7.7080 5.0 ------ UNKNOWN
104.4051 -4.2681 2.9 36.5 -44.2 6.6962 3.9 ------ UNKNOWN
124.3104 46.0311 4.1 47.3 -127.3 18.0634 2.8 ------ UNKNOWN
124.7447 47.6802 3.2 48.1 -129.3 23.1855 3.7 ------ UNKNOWN
Plot creation:
Sat Sep 30 00:45:31 EDT 2023