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
291.3823 11.1166 0.0104 43.8196 -11.6922 0.2939768 18.497 TRIG_01350381
Foreground time interval of the image:
0.000 0.372 (delta_t = 0.372 [sec])
Background time interval of the image:
-239.664 0.000 (delta_t = 239.664 [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 0.000 sec. to 0.372 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.65584 ( -0.165978 0.170484 )
Norm@50keV : 4.82123E-02 ( -0.00496842 0.00492629 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 55.26 using 59 bins.
Reduced chi-squared = 0.969474
# Null hypothesis probability of 5.40e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.372 sec: 6.30775 ( -0.64009 0.64135 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.6673e-07 ( -1.80324e-08 1.81048e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.372 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.45950 ( -0.724566 0.357329 )
Epeak [keV] : 142.576 ( -142.573 -142.573 )
Norm@50keV : 6.04580E-02 ( -0.0144749 0.0759144 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 55.00 using 59 bins.
Reduced chi-squared = 0.982143
# Null hypothesis probability of 5.13e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.372 sec: 6.26753 ( -0.6545 0.6538 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.16781e-07 ( -1.83545e-08 1.61579e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.372 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] : 14.6381 (-1.67992 1.90256)
R^2/D10^2 : 0.773090 (-0.277966 0.426482)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 82.71 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.46e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.295e-08 2.286e-09
25- 50 5.029e-08 7.012e-09
50-150 7.253e-08 1.328e-08
15-150 1.358e-07 1.618e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 160.037 (-56.1656 -161.735)
Norm : 25.8449 (-2.84823 3.30448)
------------------------------------------------------------
#Fit statistic : Chi-Squared 55.26 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.41e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.455e-08 6.138e-09
25- 50 4.592e-08 1.538e-08
50-150 9.304e-08 5.082e-08
15-150 1.635e-07 6.772e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.54164 (-1.57914 2.71297)
R1^2/D10^2 : 34.5999 (-28.84 257.489)
kT2 [keV] : 20.1818 (-3.50879 6.75661)
R2^2/D10^2 : 0.207338 (-0.141318 0.208367)
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.36 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.24e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.700e-08 1.300e-08
25- 50 4.095e-08 1.321e-08
50-150 9.168e-08 2.323e-08
15-150 1.596e-07 4.325e-08
Peak spectrum fit
Power-law model
Time interval is from -0.312 sec. to 0.688 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.51894 ( -0.204425 0.208585 )
Norm@50keV : 1.92719E-02 ( -0.00238772 0.00237743 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.07 using 59 bins.
Reduced chi-squared = 0.931053
# Null hypothesis probability of 6.23e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 2.41843 ( -0.30476 0.30545 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.82293e-07 ( -2.4201e-08 2.43211e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.312 sec. to 0.688 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.16286 ( -0.955773 0.531364 )
Epeak [keV] : 125.852 ( -100.302 -125.85 )
Norm@50keV : 2.86480E-02 ( -0.0129067 0.052092 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 52.51 using 59 bins.
Reduced chi-squared = 0.937679
# Null hypothesis probability of 6.08e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 2.38734 ( -0.314 0.31327 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.79862e-07 ( -2.52227e-08 2.50512e-08 ) ergs/cm2
Band function
Time interval is from -0.312 sec. to 0.688 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] : 15.8420 (-2.15258 2.58838)
R^2/D10^2 : 0.231942 (-0.0967846 0.156806)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 66.33 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.86e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.206e-08 2.899e-09
25- 50 5.032e-08 9.025e-09
50-150 8.794e-08 1.974e-08
15-150 1.503e-07 2.460e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.349 (-72.621 -199.357)
Norm : 9.94777 (-1.20682 1.2088)
------------------------------------------------------------
#Fit statistic : Chi-Squared 52.79 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.34e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.477e-08 1.403e-08
25- 50 4.765e-08 2.633e-08
50-150 1.045e-07 5.810e-08
15-150 1.769e-07 9.755e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.57265 (-1.6908 3.6464)
R1^2/D10^2 : 34.6886 (-34.1443 2069.08)
kT2 [keV] : 19.3916 (-3.53205 13.8661)
R2^2/D10^2 : 0.103861 (-0.0972287 0.11409)
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.46 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.34e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.537e-08 1.290e-08
25- 50 4.176e-08 1.202e-08
50-150 1.031e-07 3.023e-08
15-150 1.703e-07 4.490e-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: 1.65584 ( -0.165978 0.170484 )
Norm@50keV : 4.82123E-02 ( -0.00496842 0.00492629 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 55.26 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.40e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.372 sec: 6.30751 ( -0.640038 0.641298 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.66705e-07 ( -1.80294e-08 1.8136e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.45951 ( -0.724568 0.357327 )
Epeak [keV] : 142.580 ( -142.573 -142.573 )
Norm@50keV : 6.04574E-02 ( -0.014475 0.0759144 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 55.00 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.13e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.372 sec: 6.26653 ( -0.64977 0.65329 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.6552e-07 ( -1.86614e-08 1.86007e-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) = 4.43e-08
S(50-100 keV) = 5.62e-08
T90 vs. Hardness ratio plot
T90 = 0.287999987602234 sec.
Hardness ratio (energy fluence ratio) = 1.26862
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.29801
Count Ratio (50-100 keV) / (15-25 keV) = 1.08366
Mask shadow pattern
IMX = 9.397091828021815E-01, IMY = 1.944715260876447E-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:
-239.664000 0.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
285.1455 -24.9265 4.8 37.0 -68.7 -1.6501 -2.4 6.0 HT1900.1-2455
288.8076 10.9438 31.4 45.6 -14.2 0.1935 0.4 0.6 GRS 1915+105
333.1675 -34.9053 2.5 18.5 -164.3 1.2835 4.7 ------ UNKNOWN
275.6179 16.7868 2.4 59.4 -17.9 6.1574 4.7 ------ UNKNOWN
327.1410 -71.2823 2.5 53.1 -142.2 7.6909 4.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.372000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
284.8925 -24.9911 6.7 37.2 -68.8 0.0326 1.7 8.9 HT1900.1-2455
288.7951 11.1047 7.6 45.7 -14.0 -0.0271 -1.5 9.5 GRS 1915+105
2.1746 -17.1228 2.7 35.9 133.2 0.0708 4.3 ------ UNKNOWN
308.3984 29.6346 2.1 50.2 20.7 0.2013 5.4 ------ UNKNOWN
291.3823 11.1166 0.6 43.8 -11.7 0.2940 18.5 ------ UNKNOWN
304.9452 -59.6517 2.0 43.8 -127.0 0.1587 5.6 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
116.436590 962.447200
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.2858 35.4335 0.0 41.4 -55.5 2.9498 0.9 10.0 Her X-1
256.4363 -36.4209 493.5 57.8 -154.6 -0.1717 -0.0 0.1 GX 349+2
263.0086 -24.7454 10.9 45.3 -150.2 2.6510 1.1 0.0 GX 1+4
268.2598 -1.2950 14.9 26.1 -124.5 -1.1980 -0.8 11.5 SW J1753.5-0127
270.1515 -25.1066 14.7 41.7 -158.0 1.6141 0.8 7.4 GX 5-1
270.2133 -25.8717 9.4 42.4 -158.7 2.6482 1.2 9.1 GRS 1758-258
273.8810 -13.8633 0.0 30.4 -152.4 5.2160 3.3 12.7 GX 17+2
275.9319 -30.4072 6.1 44.1 -168.3 3.7601 1.9 2.4 H1820-303
284.9044 -24.9042 5.4 36.6 -177.7 3.5183 2.1 7.2 HT1900.1-2455
288.8597 10.8861 25.1 2.5 -103.0 0.5231 0.5 5.1 GRS 1915+105
299.6030 35.2008 0.4 25.2 8.4 32.4256 26.6 0.6 Cyg X-1
307.9438 40.9740 7.6 33.2 15.6 2.6060 1.5 7.7 Cyg X-3
326.1543 38.2756 5.5 41.2 35.3 5.4988 2.1 2.9 Cyg X-2
263.0184 -33.7320 10.8 52.4 -157.6 -3.6145 -1.1 6.3 GX 354-0
324.0743 12.0684 3.2 32.0 77.4 8.7372 3.6 ------ UNKNOWN
311.3804 19.1219 3.0 20.9 57.5 5.3935 3.9 ------ UNKNOWN
286.1502 10.7090 2.1 5.2 -101.8 5.6274 5.5 ------ UNKNOWN
265.2355 9.7013 3.3 25.7 -98.3 5.0009 3.5 ------ UNKNOWN
252.1377 -25.8219 2.6 53.1 -142.2 28.4393 4.4 ------ UNKNOWN
Plot creation:
Sun Mar 1 23:25:21 EST 2026