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
304.7794 -40.8048 0.0150 24.5510 49.5344 1.6233681 12.827 TRIG_01258721
Foreground time interval of the image:
-5.576 48.424 (delta_t = 54.000 [sec])
Background time interval of the image:
-239.576 -5.576 (delta_t = 234.000 [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
8 ms binning
From T100_start-3 s to T100_start+3 s
2 ms binning
From T100_start-1 s to T100_start+1 s
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 -5.576 sec. to 48.424 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.53708 ( -0.197038 0.199934 )
Norm@50keV : 1.92829E-03 ( -0.000236609 0.000234608 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 67.93 using 59 bins.
Reduced chi-squared = 1.19175
# Null hypothesis probability of 1.52e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 54 sec: 0.243214 ( -0.028706 0.028738 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.82233e-07 ( -1.30401e-07 1.32225e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -5.576 sec. to 48.424 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.724808 ( -1.00882 0.817926 )
Epeak [keV] : 74.1618 ( -20.1884 925.768 )
Norm@50keV : 5.18183E-03 ( -0.00321946 0.0121787 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 65.06 using 59 bins.
Reduced chi-squared = 1.16179
# Null hypothesis probability of 1.90e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 54 sec: 0.235508 ( -0.029817 0.029799 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.15489e-07 ( -1.43549e-07 1.47977e-07 ) ergs/cm2
Band function
Time interval is from -5.576 sec. to 48.424 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] : 13.8782 (-1.83594 2.16765)
R^2/D10^2 : 3.66442E-02 (-0.0148337 0.0242087)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 75.27 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.29e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.057e-08 2.028e-08
25- 50 2.971e-07 5.030e-08
50-150 3.750e-07 9.229e-08
15-150 7.527e-07 1.161e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 195.439 (-85.0009 -192.593)
Norm : 0.998413 (-0.117735 0.134444)
------------------------------------------------------------
#Fit statistic : Chi-Squared 66.13 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.91e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.346e-07 7.546e-08
25- 50 2.583e-07 1.396e-07
50-150 5.628e-07 3.081e-07
15-150 9.557e-07 5.211e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.76861 (-2.57662 3.9354)
R1^2/D10^2 : 0.252562 (-0.18289 1.07179)
kT2 [keV] : 21.4142 (-5.66793 25.8963)
R2^2/D10^2 : 6.03171E-03 (-0.00568435 0.0146754)
------------------------------------------------------------
#Fit statistic : Chi-Squared 64.56 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.77e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.248e-07 6.815e-08
25- 50 2.697e-07 1.390e-07
50-150 5.164e-07 2.859e-07
15-150 9.108e-07 4.801e-07
Peak spectrum fit
Power-law model
Time interval is from 10.424 sec. to 11.424 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.45495 ( -0.475114 0.493629 )
Norm@50keV : 5.31255E-03 ( -0.00166566 0.00165189 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 55.77 using 59 bins.
Reduced chi-squared = 0.978421
# Null hypothesis probability of 5.21e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.655465 ( -0.202649 0.203656 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.08089e-08 ( -1.69268e-08 1.74344e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 10.424 sec. to 11.424 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.21245 ( -6.21936 2.44529 )
Epeak [keV] : 62.2346 ( -16.3922 101.32 )
Norm@50keV : 0.102084 ( -0.102747 97.5164 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 52.15 using 59 bins.
Reduced chi-squared = 0.93125
# Null hypothesis probability of 6.21e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.595144 ( -0.207177 0.211675 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.51825e-08 ( -1.62584e-08 1.78566e-08 ) ergs/cm2
Band function
Time interval is from 10.424 sec. to 11.424 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] : 15.7527 (-3.97034 5.64812)
R^2/D10^2 : 7.00200E-02 (-0.07002 0.122321)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 52.13 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.58e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.605e-09 2.278e-09
25- 50 1.497e-08 8.256e-09
50-150 2.580e-08 1.705e-08
15-150 4.437e-08 2.341e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.315 (-131.048 -199.337)
Norm : 2.73539 (-0.823932 0.964425)
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.96 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.52e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.812e-09 4.291e-09
25- 50 1.310e-08 8.200e-09
50-150 2.873e-08 1.740e-08
15-150 4.865e-08 2.971e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.51939 (-2.5263 41.4722)
R1^2/D10^2 : 22.1175 (-21.7913 -21.7913)
kT2 [keV] : 16.2890 (-4.31424 -16.2898)
R2^2/D10^2 : 6.10179E-02 (-0.0610049 0.121602)
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.86 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.95e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.617e-09 2.331e-09
25- 50 1.434e-08 8.740e-09
50-150 2.659e-08 1.714e-08
15-150 4.555e-08 2.700e-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: 1.53708 ( -0.197038 0.199934 )
Norm@50keV : 1.92829E-03 ( -0.000236609 0.000234608 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 67.93 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.52e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 54 sec: 0.243207 ( -0.028705 0.0287365 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.82109e-07 ( -1.30367e-07 1.32239e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.724795 ( -1.00882 0.817928 )
Epeak [keV] : 74.1613 ( -20.1883 925.649 )
Norm@50keV : 5.18191E-03 ( -0.00321947 0.0121787 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 65.06 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.90e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 54 sec: 0.235484 ( -0.029811 0.02979 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.15824e-07 ( -1.43845e-07 1.48316e-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) = 2.47e-07
S(50-100 keV) = 3.41e-07
T90 vs. Hardness ratio plot
T90 = 47 sec.
Hardness ratio (energy fluence ratio) = 1.38057
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.35673
Count Ratio (50-100 keV) / (15-25 keV) = 1.07947
Mask shadow pattern
IMX = 2.964608070197683E-01, IMY = -3.475327571423499E-01
TIME vs. PHA plot around the trigger time
TIME vs. DetID plot around the trigger time
100 us light curve (15-350 keV)
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:
-239.576000 -5.576000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3630 -60.5860 2.9 47.8 -141.6 4.8656 4.0 2.6 Cen X-3
186.4468 -62.8789 4.3 40.8 -136.2 2.2730 2.7 8.7 GX 301-2
255.8292 -37.9091 4.2 26.9 -45.9 1.4040 2.8 8.4 4U 1700-377
256.5098 -36.3616 4.1 28.0 -43.4 1.4356 2.8 5.1 GX 349+2
263.1889 -24.6486 7.6 37.2 -26.0 0.9559 1.5 11.4 GX 1+4
264.6508 -44.5007 24.7 18.0 -37.9 0.2121 0.5 5.0 4U 1735-44
268.4445 -1.4074 13.6 59.3 -13.7 -1.4416 -0.8 5.3 SW J1753.5-0127
270.3370 -25.0436 4.8 35.6 -15.4 1.3332 2.4 3.6 GX 5-1
270.2104 -25.6650 5.3 35.0 -15.8 1.2113 2.2 6.8 GRS 1758-258
273.8954 -14.1825 3.1 46.0 -8.5 2.7532 3.7 10.9 GX 17+2
275.8699 -30.4377 16.9 29.7 -7.5 0.3449 0.7 5.1 H1820-303
285.1004 -24.8919 7.8 35.3 7.8 -0.8993 -1.5 3.9 HT1900.1-2455
262.7772 -33.9459 43.9 28.4 -31.4 -0.1343 -0.3 12.5 GX 354-0
325.0609 -42.5640 2.6 32.2 77.6 4.2921 4.5 ------ UNKNOWN
294.8601 -22.9468 2.4 38.5 22.1 3.4933 4.8 ------ UNKNOWN
91.7297 -64.1446 2.0 55.7 175.4 8.5242 5.7 ------ UNKNOWN
276.7153 -21.4308 4.2 38.6 -5.2 1.6840 2.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-5.576000 48.424000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.7089 -60.5029 0.0 47.8 -141.4 -0.4049 -1.4 13.6 Cen X-3
186.6003 -62.7057 3.4 40.9 -135.9 0.6949 3.4 4.2 GX 301-2
256.2289 -37.7498 0.0 26.9 -45.1 0.0154 0.1 12.8 4U 1700-377
256.2069 -36.5012 3.7 28.0 -44.0 0.3830 3.1 12.0 GX 349+2
262.9521 -24.5930 2.3 37.3 -26.3 -0.7200 -4.9 9.7 GX 1+4
264.8526 -44.3928 3.5 18.1 -37.3 0.3827 3.3 5.8 4U 1735-44
268.4089 -1.4010 43.7 59.3 -13.8 0.2040 0.3 3.9 SW J1753.5-0127
270.2134 -25.1854 6.8 35.5 -15.6 0.2266 1.7 7.4 GX 5-1
270.4712 -25.6062 0.0 35.0 -15.3 0.1873 1.5 12.3 GRS 1758-258
273.9432 -14.1838 10.5 46.0 -8.4 -0.2021 -1.1 9.6 GX 17+2
275.7600 -30.5110 0.0 29.6 -7.7 -0.1539 -1.3 12.1 H1820-303
285.1490 -24.9895 4.4 35.2 7.9 0.3679 2.6 7.4 HT1900.1-2455
262.8775 -33.9660 7.0 28.3 -31.2 -0.1982 -1.6 9.6 GX 354-0
329.5701 -35.4734 2.4 39.9 74.7 2.0549 4.8 ------ UNKNOWN
304.7794 -40.8048 0.9 24.6 49.5 1.6236 12.8 ------ UNKNOWN
11.3935 -77.8240 2.4 32.5 156.6 0.7059 4.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
133.124600 715.224590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
255.8820 -37.9493 88.7 37.4 -83.1 0.2789 0.1 8.0 4U 1700-377
256.2892 -36.2810 0.0 37.7 -80.3 2.4687 1.2 11.1 GX 349+2
262.8704 -24.8379 6.8 38.2 -59.5 2.7729 1.7 9.4 GX 1+4
264.5629 -44.2974 0.0 29.5 -91.4 -2.9410 -2.5 12.0 4U 1735-44
268.3941 -1.4115 4.9 51.3 -30.5 -5.3628 -2.4 2.9 SW J1753.5-0127
270.1848 -25.2218 6.4 32.6 -53.3 1.9385 1.8 10.1 GX 5-1
270.4309 -25.8704 6.9 32.1 -54.0 1.7537 1.7 10.3 GRS 1758-258
274.1408 -14.0075 5.6 37.8 -34.8 2.3829 2.1 8.0 GX 17+2
275.9271 -30.3727 170.7 25.5 -56.1 0.0644 0.1 0.4 H1820-303
284.8652 -24.7995 0.0 23.0 -33.2 -1.2518 -1.4 11.8 HT1900.1-2455
288.8820 10.9225 4.5 53.8 -0.5 4.4374 2.6 5.1 GRS 1915+105
262.7850 -33.9478 318.7 33.7 -73.1 0.0540 0.0 12.2 GX 354-0
349.3363 -23.6960 1.9 40.8 98.2 12.7558 5.9 ------ UNKNOWN
333.7551 -20.0446 2.7 32.2 77.6 7.3870 4.3 ------ UNKNOWN
328.5878 -19.2106 3.1 29.6 69.4 5.4628 3.7 ------ UNKNOWN
297.4153 -31.6355 2.9 10.9 -16.3 3.2186 4.1 ------ UNKNOWN
Plot creation:
Sat Oct 19 18:13:42 EDT 2024