batgrbproduct analysis for trigger=1218498

batgrbproduct Analysis for Trigger=1218498

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
4) This page will be updated for up to 15 downlinks after the trigger.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Mon Mar  4 19:57:13 EST 2024
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1218498/GCN5_download_cron
======================================================================

  Trigger: 01218498      Segment: 000

  BAT Trigger Time: 731174632   [s; MET]
      Trigger Stop: 731174696   [s; MET]
               UTC: 2024-03-03T16:03:18.979740    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 299.546939624198   Dec: 34.8643220969749  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    16.45
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    16.45

  Flight Position:   [ source = BAT ]
    RA: 299.546939624198   Dec: 34.8643220969749  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 299.537465258597   Dec: 34.8631657224136  [deg; J2000]  
        { 19h 58m 09.0s , +34d 51' 47.4" }
         +/- 1.30903115290382 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.480113132200597 [arcmin] (formal 1-sigma fit error)
    SNR: 20.7036528428117
 
  Angular difference between Flight and Ground position is 0.471563 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 479.700000047684 +/- 136.635648717689
        Measured from: -40.1999999284744
                   to: 439.500000119209     [s; relative to TRIGTIME]
     T50: 204.763999938965 +/- 38.4312535855404
        Measured from: 27.6240000724792
                   to: 232.388000011444     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 28.1160000562668     
                   to: 29.1160000562668     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -69.5759999752045     
                   to: 513.664000034332     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     5.942779   7.007860   4.405295   0.717869
           0.157450   0.160260   0.135137   0.112269 [error]
 Peak      0.019688   0.028068   0.038068   0.006604
           0.006724   0.006933   0.005630   0.004670 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== Fluence/Peak Flux Summary ===
 
              Model    Band1    Band2    Band3    Band4    Band5    Total      
                       15-25    25-50   50-100  100-350   15-150   15-350   keV
Fluence   Power-law 1.88e-06 2.91e-06 3.38e-06 7.56e-06 1.04e-05 1.57e-05   erg/cm2
              Error 1.05e-07 9.32e-08 1.40e-07 6.95e-07 3.29e-07 7.87e-07   erg/cm2
Peak flux Power-law 1.88e-01 2.22e-01 1.89e-01 2.73e-01 6.95e-01 8.71e-01   ph/cm2/s
              Error 7.33e-02 5.52e-02 4.38e-02 1.28e-01 1.53e-01 1.87e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.74e-06 2.99e-06 3.44e-06 4.37e-06 1.01e-05 1.25e-05   erg/cm2
              Error 1.34e-07 1.07e-07 1.50e-07 1.42e-06 3.90e-07 1.48e-06   erg/cm2
Peak flux Cutoff-PL 1.23e-01 2.39e-01 2.22e-01 8.96e-02 6.50e-01 6.74e-01   ph/cm2/s
              Error 8.84e-02 6.89e-02 5.74e-02 1.28e-01 1.61e-01 1.95e-01   ph/cm2/s
 
Fluence        Band 1.70e-06 2.99e-06 3.41e-06 5.61e-06 1.00e-05 1.37e-05   erg/cm2
              Error 1.45e-07 1.19e-07 -------- -------- 3.88e-07 --------   erg/cm2
Peak flux      Band 1.55e-01 2.36e-01 7.06e-02 1.39e-01 6.81e-01 7.38e-01   ph/cm2/s
              Error 1.14e-01 -------- -------- -------- -------- 2.20e-01   ph/cm2/s

 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.784    0.058    -      -           1.94e-03 5.99e-05   53.150 57
CPL   1.387    0.252      78.0   28.5      3.03e-03 8.61e-04   45.270 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.232    0.339    -      -           5.89e-03 1.24e-03   49.580 57
CPL  -0.379    1.966      83.1  140.8      3.11e-02 1.37e-01   46.140 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err   : 90% error of the photon index
Epeak      : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm       : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom

 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 286.848000 sec.
T50 in the 50-300 keV band: 197.248000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  583.240  -69.576  513.664
T90   479.700  -40.200  439.500
T50   204.764   27.624  232.388
Peak    1.000   28.116   29.116

Click here for the BAT GCN circular template

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
  299.5375 +34.8632 0.0093   21.0 -169.5       3.7307    20.7  TRIG_01218498       
------------------------------------------
 
Foreground time interval of the image:
-19.599  73.701 (delta_t =  93.300 [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

Multiple GTIs in the spectrum
tstart tstop
-69.576000 235.150000
236.000000 513.664000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.78355     ( -0.0582927   0.0586621 )
Norm@50keV  : 1.93727E-03    ( -6.00023e-05   5.98831e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.15 using 59 PHA bins.
# Reduced chi-squared =         0.9324 for     57 degrees of freedom 
# Null hypothesis probability =   6.203701e-01
 
Photon flux (15-150 keV)    in 582.4 sec: 0.265268 ( -0.0087491  0.00878188 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.03935e-05 ( -3.28939e-07  3.29678e-07 ) ergs/cm2

Cutoff power-law model

Multiple GTIs in the spectrum
tstart tstop
-69.576000 235.150000
236.000000 513.664000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38666     ( -0.259176   0.244804 )
Epeak [keV] : 77.9900      ( -13.1775 43.8327 )
Norm@50keV  : 3.03124E-03    ( -0.000715583   0.00100598 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.27 using 59 PHA bins.
# Reduced chi-squared =         0.8084 for     56 degrees of freedom 
# Null hypothesis probability =   8.468250e-01
 
Photon flux (15-150 keV)    in 582.4 sec: 0.257022 ( -0.009941  0.009988 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.00511e-05 ( -3.9015e-07  3.89101e-07 ) ergs/cm2

Band function

Multiple GTIs in the spectrum
tstart tstop
-69.576000 235.150000
236.000000 513.664000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.32260   ( -0.289062   0.581292 )
beta        : -2.12321    ( 2.12317   0.269388 )
Epeak [keV] : 71.7494      ( -25.4139 42.4495 )
Norm@50keV   : 3.29275E-03    ( -0.000928706   0.00418635 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.86 using 59 PHA bins.
# Reduced chi-squared =         0.8156 for     55 degrees of freedom 
# Null hypothesis probability =   8.337363e-01
 
Photon flux (15-150 keV)    in 582.4 sec: 0.352758 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.00392e-05 ( -1.00351e-05  -3.88461e-07 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.5625  (  )
R^2/D10^2   : 3.86821E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         241.52 using 59 PHA bins.
# Reduced chi-squared =         4.2372 for     57 degrees of freedom 
# Null hypothesis probability =   1.443218e-24
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.775e-07   5.300e-08
25- 50  3.160e-06   1.182e-07
50-150  3.764e-06   2.335e-07
15-150  7.802e-06   2.708e-07

Thermal bremsstrahlung (OTTB)

XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 117.571       (-14.9871      16.2397)
Norm        : 1.10697       (-0.0469776     0.0560769)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.726e-06   1.188e-07
25- 50  3.046e-06   1.369e-07
50-150  5.224e-06   1.212e-06
15-150  9.997e-06   1.281e-06

Double BB

XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.60096        (-0.885911      0.97204)
R1^2/D10^2  : 0.347691        (-0.128341      0.241956)
kT2 [keV]   : 21.9134        (-2.34769      3.34146)
R2^2/D10^2  : 5.06186E-03    (-0.00218882   0.00299196)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.591e-06   1.896e-07
25- 50  3.004e-06   2.298e-07
50-150  5.183e-06   5.498e-07
15-150  9.777e-06   7.688e-07

Peak spectrum fit

Power-law model

Time interval is from   28.116 sec. to   29.116 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23212     ( -0.34464   0.33257 )
Norm@50keV  : 5.89377E-03    ( -0.00124478   0.00124333 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.58 using 59 PHA bins.
# Reduced chi-squared =         0.8698 for     57 degrees of freedom 
# Null hypothesis probability =   7.468358e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.695129 ( -0.152711  0.153949 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.92637e-08 ( -1.31686e-08  1.33002e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   28.116 sec. to   29.116 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.378976     ( -2.42908   1.50204 )
Epeak [keV] : 83.0956      ( -21.9513 259.711 )
Norm@50keV  : 3.10944E-02    ( -0.0310968   0.243317 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.14 using 59 PHA bins.
# Reduced chi-squared =         0.8240 for     56 degrees of freedom 
# Null hypothesis probability =   8.234482e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.649952 ( -0.160942  0.1609 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.55453e-08 ( -1.34532e-08  1.38558e-08 ) ergs/cm2

Band function

Time interval is from   28.116 sec. to   29.116 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.380913   ( -0.987261   3.48888 )
beta        : -10.0000    ( 10   1.77636e-15 )
Epeak [keV] : 83.0287      ( -21.8991 261.79 )
Norm@50keV   : 3.11733E-02    ( -0.0311728   0.245726 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.14 using 59 PHA bins.
# Reduced chi-squared =         0.8389 for     55 degrees of freedom 
# Null hypothesis probability =   7.967979e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.680864 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.29692e-08 ( 0  0 ) ergs/cm2

Single BB

 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 19.2142  (-3.86196  5.19123)
R^2/D10^2   : 3.81987E-02  (-0.021256   0.0438361)
(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  2.761e-09   1.189e-09
25- 50  1.338e-08   5.020e-09
50-150  3.639e-08   1.432e-08
15-150  5.253e-08   1.961e-08

Thermal bremsstrahlung (OTTB)

XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-75.6016      -200)
Norm        : 2.94483       (-0.627931     0.627931)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.337e-09   4.295e-09
25- 50  1.411e-08   8.175e-09
50-150  3.095e-08   1.810e-08
15-150  5.240e-08   3.013e-08

Double BB

XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.73995        (-5.73349      -5.73349)
R1^2/D10^2  : 0.621834        (-0.622796      -0.622796)
kT2 [keV]   : 21.4616        (-5.21997      -21.4609)
R2^2/D10^2  : 2.44858E-02    (-0.0244901   0.0423103)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.658e-09   3.013e-09
25- 50  1.330e-08   7.220e-09
50-150  3.798e-08   2.260e-08
15-150  5.593e-08   3.064e-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: 1.84120     ( -0.0947626   0.0963488 )
Norm@50keV  : 2.53211E-03    ( -0.000143052   0.000141939 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.68 using 59 PHA bins.
# Reduced chi-squared =         0.9067 for     57 degrees of freedom 
# Null hypothesis probability =   6.742459e-01
 
Photon flux (15-150 keV)    in 93.3 sec: 0.354649 ( -0.018604  0.0186361 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.17253e-06 ( -1.23414e-07  1.24235e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34549     ( -0.421138   0.384124 )
Epeak [keV] : 61.3684      ( -11.4025 50.1731 )
Norm@50keV  : 4.63443E-03    ( -0.00169883   0.00304675 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.70 using 59 PHA bins.
# Reduced chi-squared =         0.8340 for     56 degrees of freedom 
# Null hypothesis probability =   8.073734e-01
 
Photon flux (15-150 keV)    in 93.3 sec: 0.344722 ( -0.02  0.020024 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.07744e-06 ( -1.42068e-07  1.43327e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.34752   ( -0.380906   0.331333 )
beta        : -9.37119    ( 9.37166   19.3717 )
Epeak [keV] : 61.4576      ( -11.4253 43.8137 )
Norm@50keV   : 4.62114E-03    ( -0.00168348   0.000500698 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.70 using 59 PHA bins.
# Reduced chi-squared =         0.8492 for     55 degrees of freedom 
# Null hypothesis probability =   7.793869e-01
 
Photon flux (15-150 keV)    in 93.3 sec: 0.352758 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.07573e-06 ( 0  0 ) ergs/cm2

S(25-50 keV) vs. S(50-100 keV) plot

S(25-50 keV)  = 2.91e-06
S(50-100 keV) = 3.38e-06

T90 vs. Hardness ratio plot

T90                                   = 479.700000047684 sec.
Hardness ratio (energy fluence ratio) = 1.16151

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.17922
Count Ratio (50-100 keV) / (15-25 keV) = 0.741285

Mask shadow pattern

IMX = -3.777928548482600E-01, IMY = 6.983583379077755E-02

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:
-19.599390 73.700590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3549  35.4586   23.1  36.8  115.3   0.2135   0.5    8.6	Her X-1                       
263.1420 -24.6421   17.2  48.0   19.3  -0.2691  -0.7    9.5	GX 1+4                        
268.3700  -1.4483   47.1  27.1   38.5  -0.0527  -0.2    0.3	SW J1753.5-0127               
270.1530 -25.1275    8.3  45.1   11.5  -0.4694  -1.4    7.7	GX 5-1                        
270.1782 -25.7607   15.9  45.7   11.0  -0.2427  -0.7    6.8	GRS 1758-258                  
274.0308 -14.0166   36.4  33.6   14.3  -0.0785  -0.3    1.9	GX 17+2                       
275.8469 -30.3039    5.9  48.0    2.4  -0.7044  -2.0    5.5	H1820-303                     
284.9365 -24.8228   12.3  41.0   -7.3   0.2510   0.9    8.0	HT1900.1-2455                 
288.8409  10.9876    8.1   5.0   -7.5  -0.2566  -1.4    3.6	GRS 1915+105                  
299.5869  35.0446    1.3  21.2 -169.7   1.6379   9.0    9.4	Cyg X-1                       
308.0258  40.8897   16.0  29.7 -164.2  -0.1464  -0.7    5.4	Cyg X-3                       
326.1684  38.3254  100.3  39.3 -145.4   0.0338   0.1    0.3	Cyg X-2                       
294.7132  15.7219    2.5   5.2 -101.8   0.8447   4.6 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
138.000630 235.150000
236.000000 723.107000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.5147  35.3416    7.0  36.5   69.5  -4.1142  -1.6    2.8	Her X-1                       
268.3653  -1.3571    4.7  46.5   10.9   3.3196   2.5    5.7	SW J1753.5-0127               
274.0984 -13.9145   15.7  54.4   -3.8  -1.5804  -0.7    9.1	GX 17+2                       
288.9345  11.0419   17.2  25.7  -10.0  -0.6380  -0.7    9.9	GRS 1915+105                  
299.6368  34.9929    0.0   0.2  172.6   7.9322   9.1   12.7	Cyg X-1                       
308.0059  40.9170    7.8   9.0 -169.4   1.2509   1.5    5.2	Cyg X-3                       
325.9200  38.3393    0.0  21.4 -141.8  -1.2142  -1.3   11.9	Cyg X-2                       
275.6018 -17.0744    2.7  56.7   -7.0  12.1783   4.2 ------	UNKNOWN

Plot creation:
Mon Mar  4 20:00:03 EST 2024