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
239.3339 23.6123 0.0197 20.3989 -109.5028 0.4550538 9.812 TRIG_01222885
Foreground time interval of the image:
-0.064 13.668 (delta_t = 13.732 [sec])
Background time interval of the image:
-239.472 -0.064 (delta_t = 239.408 [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 -0.064 sec. to 13.668 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.12287 ( -0.294676 0.323948 )
Norm@50keV : 1.77042E-03 ( -0.000385817 0.000373075 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.47 using 59 bins.
Reduced chi-squared = 1.00825
# Null hypothesis probability of 4.58e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 13.73 sec: 0.281744 ( -0.04449 0.044496 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.26413e-07 ( -4.30253e-08 4.4519e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.064 sec. to 13.668 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.52221 ( -1.41798 0.574156 )
Epeak [keV] : 32.0927 ( -31.1362 -32.0915 )
Norm@50keV : 4.01364E-03 ( -0.00401334 0.0241761 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.67 using 59 bins.
Reduced chi-squared = 1.01196
# Null hypothesis probability of 4.50e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 13.73 sec: 0.276304 ( -0.045423 0.045564 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.13644e-07 ( -4.53301e-08 4.99285e-08 ) ergs/cm2
Band function
Time interval is from -0.064 sec. to 13.668 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] : 9.34947 (-1.80846 2.17861)
R^2/D10^2 : 0.166449 (-0.0923571 0.218898)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 65.93 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.95e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.962e-08 1.197e-08
25- 50 8.928e-08 2.184e-08
50-150 3.822e-08 1.727e-08
15-150 1.671e-07 4.066e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 53.9962 (-19.2179 38.2621)
Norm : 1.53710 (-0.371505 0.534839)
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.75 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.85e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.246e-08 1.321e-08
25- 50 7.736e-08 3.411e-08
50-150 8.061e-08 6.484e-08
15-150 2.104e-07 1.119e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.30798 (-1.42984 2.1704)
R1^2/D10^2 : 2.45900 (-1.97818 14.0486)
kT2 [keV] : 15.1689 (-4.15866 8.11572)
R2^2/D10^2 : 1.95551E-02 (-0.0162953 0.054756)
------------------------------------------------------------
#Fit statistic : Chi-Squared 55.30 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.63e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.640e-08 3.152e-08
25- 50 7.113e-08 3.719e-08
50-150 8.192e-08 5.242e-08
15-150 2.095e-07 1.094e-07
Peak spectrum fit
Power-law model
Time interval is from 1.804 sec. to 2.804 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.16137 ( -0.699387 0.885031 )
Norm@50keV : 3.11944E-03 ( -0.00160426 0.00142058 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 59.23 using 59 bins.
Reduced chi-squared = 1.03912
# Null hypothesis probability of 3.94e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.506221 ( -0.160756 0.160752 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.9183e-08 ( -1.17308e-08 1.26703e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.804 sec. to 2.804 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.15843 ( -1.70499 0.426597 )
Epeak [keV] : 337.095 ( )
Norm@50keV : 1.05122E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.97 using 59 bins.
Reduced chi-squared = 1.03518
# Null hypothesis probability of 4.03e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.361758 ( -0.198579 0.269878 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.93623e-08 ( -2.12978e-08 9.82632e-09 ) ergs/cm2
Band function
Time interval is from 1.804 sec. to 2.804 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] : 5.65573 (-1.82621 3.29412)
R^2/D10^2 : 2.20148 (-2.19614 11.1104)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 63.21 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.66e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.552e-09 4.986e-09
25- 50 7.478e-09 4.829e-09
50-150 5.341e-10 5.725e-10
15-150 1.656e-08 1.059e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 54.6758 (-40.8486 -54.7574)
Norm : 2.65201 (-1.30726 0.878968)
------------------------------------------------------------
#Fit statistic : Chi-Squared 60.97 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.35e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.555e-09 4.009e-09
25- 50 9.684e-09 6.195e-09
50-150 1.017e-08 8.006e-09
15-150 2.641e-08 1.717e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.76776 (-1.61124 2.83852)
R1^2/D10^2 : 4.26852 (-3.55791 27.6432)
kT2 [keV] : 42.4214 (-25.2036 -42.4232)
R2^2/D10^2 : 1.23766E-03 (-0.0012066 0.0178828)
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.24 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.28e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.824e-09 5.260e-09
25- 50 6.866e-09 3.883e-09
50-150 1.975e-08 1.265e-08
15-150 3.543e-08 1.788e-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: 2.12287 ( -0.294676 0.323948 )
Norm@50keV : 1.77042E-03 ( -0.000385817 0.000373075 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.47 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.58e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 13.73 sec: 0.281719 ( -0.044485 0.0444917 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.26372e-07 ( -4.29908e-08 4.45381e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.52225 ( -1.41799 0.87255 )
Epeak [keV] : 32.0918 ( -31.5639 -32.0915 )
Norm@50keV : 4.01341E-03 ( -0.00401334 0.0241759 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.67 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.50e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 13.73 sec: 0.276237 ( -0.044459 0.045543 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.13688e-07 ( -4.53447e-08 5.0039e-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) = 7.04e-08
S(50-100 keV) = 6.47e-08
T90 vs. Hardness ratio plot
T90 = 12.4279999732971 sec.
Hardness ratio (energy fluence ratio) = 0.919034
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.778728
Count Ratio (50-100 keV) / (15-25 keV) = 0.431338
Mask shadow pattern
IMX = -1.241514849607829E-01, IMY = 3.505392901134579E-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:
-239.472000 -0.064000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9752 -15.6438 0.4 24.7 14.7 9.6367 27.4 0.3 Sco X-1
254.4527 35.2774 6.1 37.3 -99.4 1.6974 1.9 3.9 Her X-1
256.2029 -37.8038 5.1 48.6 21.8 2.1106 2.3 10.5 4U 1700-377
256.3761 -36.5204 11.5 47.6 20.7 -0.8454 -1.0 6.5 GX 349+2
263.0098 -24.7473 130.2 42.9 3.5 0.0551 0.1 0.1 GX 1+4
268.2772 -1.3382 5.7 37.7 -33.2 0.9746 2.0 8.8 SW J1753.5-0127
270.3176 -25.1171 8.2 48.5 -1.6 0.9369 1.4 2.9 GX 5-1
270.4842 -25.7357 9.3 48.9 -1.0 0.8209 1.2 9.8 GRS 1758-258
273.9624 -14.1469 4.2 46.6 -17.0 1.7605 2.7 7.1 GX 17+2
275.9073 -30.3994 4.9 55.5 0.8 3.4320 2.4 2.1 H1820-303
263.1059 -33.7700 6.3 49.0 12.6 1.6170 1.8 7.0 GX 354-0
240.9920 9.3759 2.8 10.8 -67.0 1.2734 4.1 ------ UNKNOWN
191.8623 46.3214 2.1 53.6 -164.5 4.9999 5.5 ------ UNKNOWN
285.9878 -20.1905 2.4 59.4 -14.8 7.6908 4.8 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.064000 13.668000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0996 -15.7346 6.2 24.8 14.6 -0.0845 -1.9 9.0 Sco X-1
254.5366 35.2404 8.0 37.3 -99.2 0.1503 1.4 7.2 Her X-1
256.0010 -37.8315 56.9 48.5 22.0 -0.0356 -0.2 1.0 4U 1700-377
256.6431 -36.3833 10.7 47.6 20.3 -0.1549 -1.1 10.3 GX 349+2
262.8305 -24.7337 33.8 42.7 3.6 0.0244 0.3 9.8 GX 1+4
268.3110 -1.2933 6.5 37.7 -33.2 0.1079 1.8 10.1 SW J1753.5-0127
270.2961 -25.2082 6.6 48.5 -1.4 -0.1721 -1.7 7.8 GX 5-1
270.4345 -25.7076 10.9 48.9 -1.0 0.1081 1.1 7.4 GRS 1758-258
273.9564 -14.0391 5.8 46.5 -17.1 0.1568 2.0 2.9 GX 17+2
276.0247 -30.5150 0.0 55.6 0.8 -0.2232 -0.9 10.3 H1820-303
263.0120 -33.9577 7.1 49.1 12.9 0.2233 1.6 7.5 GX 354-0
239.3339 23.6122 1.2 20.4 -109.5 0.4550 9.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
105.428600 596.928590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9769 -15.6318 1.0 39.6 36.1 16.7512 11.3 0.5 Sco X-1
254.3716 35.2819 6.2 17.5 -90.6 1.2500 1.8 5.6 Her X-1
268.2193 -1.4531 4.7 37.6 -7.6 -2.2382 -2.5 8.9 SW J1753.5-0127
273.9513 -14.1205 8.5 50.7 -0.8 1.6067 1.4 6.0 GX 17+2
288.8257 11.0210 11.2 48.6 -39.2 1.6352 1.0 4.8 GRS 1915+105
Plot creation:
Sat Oct 19 18:30:01 EDT 2024