Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
299.8126 +35.1573 0.0104 25.1 163.0 3.7204 18.5 TRIG_01219325
------------------------------------------
Foreground time interval of the image:
-16.499 71.801 (delta_t = 88.300 [sec])
Background time interval of the image:
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) The mask-weighted light curves are using the flight position.
- 3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 4) 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.
- 5) 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.
- 6) 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 64.000000
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 64.000000
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 64.000000
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) For long bursts, a spectral fit of 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.
- 4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.
Time averaged spectrum fit using the pre-slew DRM
Power-law model
Time interval is from -59.416 sec. to 127.532 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.74165 ( -0.0899395 0.0908754 )
Norm@50keV : 2.30851E-03 ( -0.000117794 0.000117129 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.10 using 59 PHA bins.
# Reduced chi-squared = 0.9141 for 57 degrees of freedom
# Null hypothesis probability = 6.589335e-01
Photon flux (15-150 keV) in 186.9 sec: 0.311193 ( -0.0154315 0.0154624 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.98321e-06 ( -2.10898e-07 2.121e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -59.416 sec. to 127.532 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.55092 ( -0.370956 0.261672 )
Epeak [keV] : 112.405 ( -46.0747 -112.41 )
Norm@50keV : 2.90093E-03 ( -0.000686017 0.00158459 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.22 using 59 PHA bins.
# Reduced chi-squared = 0.9146 for 56 degrees of freedom
# Null hypothesis probability = 6.561737e-01
Photon flux (15-150 keV) in 186.9 sec: 0.307595 ( -0.016665 0.016665 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.91333e-06 ( -2.47661e-07 2.35774e-07 ) ergs/cm2
Band function
Time interval is from -59.416 sec. to 127.532 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.11983 ( 1.11422 1.11422 )
beta : -1.86104 ( 1.8608 0.170801 )
Epeak [keV] : 52.9549 ( -52.4595 250.452 )
Norm@50keV : 5.42168E-03 ( -0.0032775 198.457 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.01 using 59 PHA bins.
# Reduced chi-squared = 0.9094 for 55 degrees of freedom
# Null hypothesis probability = 6.651001e-01
Photon flux (15-150 keV) in 186.9 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.9e-06 ( -3.8987e-06 -2.35401e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 12.6017 ( )
R^2/D10^2 : 6.06776E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 148.72 using 59 PHA bins.
# Reduced chi-squared = 2.6091 for 57 degrees of freedom
# Null hypothesis probability = 4.025150e-10
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.819e-07 3.747e-08
25- 50 1.271e-06 7.401e-08
50-150 1.253e-06 1.210e-07
15-150 2.906e-06 1.729e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 123.274 (-24.3764 32.2524)
Norm : 1.30261 (-0.0818206 0.0967528)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.334e-07 4.972e-08
25- 50 1.138e-06 7.626e-08
50-150 2.058e-06 5.771e-07
15-150 3.830e-06 6.336e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.29762 (-1.15859 1.17815)
R1^2/D10^2 : 0.325676 (-0.124847 0.258247)
kT2 [keV] : 27.3479 (-5.60703 9.92416)
R2^2/D10^2 : 2.64603E-03 (-0.00168918 0.00357186)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.038e-07 9.728e-08
25- 50 1.167e-06 1.602e-07
50-150 2.127e-06 6.085e-07
15-150 3.898e-06 6.897e-07
Peak spectrum fit
Power-law model
Time interval is from -51.804 sec. to -50.804 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.12232 ( -0.568788 0.704002 )
Norm@50keV : 4.27184E-03 ( -0.00201999 0.00197149 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.09 using 59 PHA bins.
# Reduced chi-squared = 1.037 for 57 degrees of freedom
# Null hypothesis probability = 3.991883e-01
Photon flux (15-150 keV) in 1 sec: 0.679557 ( -0.239408 0.239482 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.97682e-08 ( -1.63253e-08 1.76616e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -51.804 sec. to -50.804 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.07566 ( 1.13272 3.12203 )
Epeak [keV] : 34.2294 ( -34.1721 30.3164 )
Norm@50keV : 0.452116 ( -0.570883 -0.570883 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.42 using 59 PHA bins.
# Reduced chi-squared = 1.007 for 56 degrees of freedom
# Null hypothesis probability = 4.593038e-01
Photon flux (15-150 keV) in 1 sec: 0.648788 ( -0.229375 0.234761 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.2132e-08 ( -1.25091e-08 1.69941e-08 ) ergs/cm2
Band function
Time interval is from -51.804 sec. to -50.804 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.52558 ( -12.8483 -4.52558 )
beta : -3.31509 ( 3.31509 1.29057 )
Epeak [keV] : 29.9461 ( -7.53807 9.19151 )
Norm@50keV : 138.829 ( -138.829 9014.66 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.18 using 59 PHA bins.
# Reduced chi-squared = 1.021 for 55 degrees of freedom
# Null hypothesis probability = 4.305958e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.51277e-08 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.72224 (-2.43107 3.3846)
R^2/D10^2 : 0.592261 (-0.59227 1.51501)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.624e-09 5.305e-09
25- 50 1.744e-08 1.107e-08
50-150 6.039e-09 4.922e-09
15-150 3.210e-08 2.023e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 47.0657 (-25.4586 99.3311)
Norm : 4.12902 (-1.8517 3.4552)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.949e-09 6.240e-09
25- 50 1.398e-08 8.690e-09
50-150 1.280e-08 1.016e-08
15-150 3.673e-08 2.362e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 76.9279 (-70.6136 -70.6136)
R1^2/D10^2 : 4.38600E-05 (-6.19546e-05 -6.19546e-05)
kT2 [keV] : 8.56413 (-8.55351 3.51113)
R2^2/D10^2 : 0.627065 (-0.629545 1.70277)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.798e-09 6.575e-07
25- 50 1.715e-08 5.165e-06
50-150 6.707e-09 8.095e-05
15-150 3.265e-08 7.970e-05
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: 1.80632 ( -0.113431 0.11557 )
Norm@50keV : 2.35305E-03 ( -0.000165227 0.000163599 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.15 using 59 PHA bins.
# Reduced chi-squared = 1.125 for 57 degrees of freedom
# Null hypothesis probability = 2.402763e-01
Photon flux (15-150 keV) in 88.3 sec: 0.325043 ( -0.0206059 0.0206265 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.91236e-06 ( -1.36315e-07 1.37582e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.27999 ( -0.547203 0.476939 )
Epeak [keV] : 61.1053 ( -13.0193 124.725 )
Norm@50keV : 4.57416E-03 ( -0.00203226 0.00450586 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.57 using 59 PHA bins.
# Reduced chi-squared = 1.082 for 56 degrees of freedom
# Null hypothesis probability = 3.144479e-01
Photon flux (15-150 keV) in 88.3 sec: 0.316850 ( -0.021921 0.021855 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.8139e-06 ( -1.61227e-07 1.63117e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.758092 ( -0.740193 0.824603 )
beta : -2.12891 ( 2.12474 0.282525 )
Epeak [keV] : 45.7013 ( -20.9531 35.7926 )
Norm@50keV : 9.82445E-03 ( -0.00607852 162.788 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.73 using 59 PHA bins.
# Reduced chi-squared = 1.068 for 55 degrees of freedom
# Null hypothesis probability = 3.405221e-01
Photon flux (15-150 keV) in 88.3 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.82526e-06 ( -1.82464e-06 -1.50967e-07 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 1.10e-06
S(50-100 keV) = 1.31e-06
T90 vs. Hardness ratio plot
T90 = 133.263999938965 sec.
Hardness ratio (energy fluence ratio) = 1.19091
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.19257
Count Ratio (50-100 keV) / (15-25 keV) = 0.712911
Mask shadow pattern
IMX = -4.478797108709294E-01, IMY = -1.368790512837784E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-16.499360 71.800580
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
263.0718 -24.7484 7.4 49.0 24.4 0.7460 1.6 3.4 GX 1+4
268.2772 -1.5630 82.1 32.2 50.8 -0.0447 -0.1 8.6 SW J1753.5-0127
270.2746 -24.9077 7.6 44.5 18.0 0.5233 1.5 10.3 GX 5-1
270.2607 -25.5553 5.3 45.0 17.4 -0.7847 -2.2 11.5 GRS 1758-258
273.9594 -13.8560 4.8 34.1 26.1 0.6594 2.4 11.2 GX 17+2
276.0002 -30.3785 18.0 45.9 7.6 -0.2016 -0.6 4.0 H1820-303
284.8888 -24.9347 7.2 37.4 0.8 -0.4184 -1.6 8.1 HT1900.1-2455
288.7138 11.0947 8.2 9.6 77.2 -0.2543 -1.4 10.2 GRS 1915+105
299.7562 35.1713 0.7 25.1 162.9 3.4687 17.2 8.3 Cyg X-1
308.1352 40.7815 18.3 31.9 174.3 0.1456 0.6 10.3 Cyg X-3
326.2359 38.4174 9.5 37.7 -163.0 0.3084 1.2 6.5 Cyg X-2
303.6424 9.2874 2.4 5.2 -101.2 0.9015 4.8 ------ UNKNOWN
329.9022 41.5771 2.5 41.9 -163.9 1.3014 4.6 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
135.600600 567.810000
569.000000 715.110000
716.000000 843.720000
850.000000 947.130000
955.000000 963.100000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.5361 35.4597 4.6 36.7 75.4 9.6806 2.5 8.0 Her X-1
268.4244 -1.3172 45.9 46.8 17.0 0.6141 0.3 8.8 SW J1753.5-0127
274.0011 -13.9615 4.4 54.9 2.5 -9.5031 -2.6 4.5 GX 17+2
288.7386 11.1255 15.2 26.0 -3.1 -1.0447 -0.8 11.4 GRS 1915+105
299.7772 35.1685 0.5 0.1 92.1 29.4688 22.7 9.4 Cyg X-1
308.1699 40.7522 48.7 8.6 -161.8 -0.2863 -0.2 12.3 Cyg X-3
326.3577 38.2688 18.3 21.4 -134.9 0.8800 0.6 9.3 Cyg X-2
259.7143 37.3917 3.4 32.2 77.4 8.2101 3.4 ------ UNKNOWN
348.5398 68.8798 2.5 43.0 174.7 11.0815 4.6 ------ UNKNOWN
305.7765 33.4620 2.5 5.2 -101.5 6.0508 4.7 ------ UNKNOWN
3.7827 38.1743 2.6 50.3 -142.1 18.3839 4.5 ------ UNKNOWN
Plot creation:
Sun Mar 10 17:41:56 EDT 2024