batgrbproduct Analysis for Trigger=638946

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun May 17 01:32:26 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger638946
======================================================================

  Trigger: 00638946      Segment: 000

  BAT Trigger Time: 451554190.564   [s; MET]
      Trigger Stop: 451554190.628   [s; MET]
               UTC: 2015-04-24T07:42:57.075440    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 152.312128050396   Dec: -26.6466164433475  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    15.22
     Image Trigger?:     NO
     Rate S/N Ratio:     250.966133173383  [ if not an image trigger ]
     Image S/N Ratio:    15.22

  Flight Position:   [ source = BAT ]
    RA: 152.312128050396   Dec: -26.6466164433475  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 152.305235855337   Dec: -26.6473550660799  [deg; J2000]  
        { 10h 09m 13.3s , -26d 38' 50.5" }
         +/- 0.895851674156214 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.269648104699712 [arcmin] (formal 1-sigma fit error)
    SNR: 35.5920095349208
 
  Angular difference between Flight and Ground position is 0.372257 arcmin
 
  Partial Coding Fraction: 0.6953125    [ including projection effects ]

  Duration
     T90: 81.055999994278 +/- 17.4800292500718
        Measured from: -0.0279999971389771
                   to: 81.027999997139     [s; relative to TRIGTIME]
     T50: 12.7520000338554 +/- 18.3920277981243
        Measured from: 0.0839999914169312
                   to: 12.8360000252724     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0720000267028809     
                   to: 0.927999973297119     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0600000023841858     
                   to: 95.0119999647141     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.431852   0.685924   0.762470   0.309109
           0.059178   0.061578   0.054463   0.046555 [error]
 Peak      0.244502   0.452358   0.620572   0.279085
           0.011892   0.015366   0.017930   0.015690 [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 1.37e-07 3.09e-07 5.49e-07 2.29e-06 1.50e-06 3.29e-06   erg/cm2
              Error 2.35e-08 3.09e-08 5.15e-08 5.05e-07 1.32e-07 5.29e-07   erg/cm2
Peak flux Power-law 2.22e+00 3.40e+00 3.90e+00 8.55e+00 1.21e+01 1.81e+01   ph/cm2/s
              Error 1.69e-01 1.55e-01 1.39e-01 6.91e-01 4.15e-01 7.37e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.39e-07 3.11e-07 5.47e-07 2.24e-06 1.49e-06 3.23e-06   erg/cm2
              Error 2.38e-08 3.07e-08 5.17e-08 7.26e-07 1.32e-07 5.57e-07   erg/cm2
Peak flux Cutoff-PL 2.22e+00 3.40e+00 3.90e+00 8.49e+00 1.21e+01 1.80e+01   ph/cm2/s
              Error 1.83e-01 1.55e-01 1.39e-01 1.19e+00 3.78e-01 1.35e+00   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.172    0.151    -      -           1.54e-03 1.27e-04   61.850 57
CPL   1.167    0.268    10000.0    0.0      1.55e-03 1.26e-04   61.880 56
 
The chi2 of BB fit is -------- which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.803    0.062    -      -           1.05e-01 3.67e-03   49.540 57
CPL   0.795    0.063    9999.1    0.0      1.06e-01 1.67e-02   49.530 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: 0.320000 sec.
T50 in the 50-300 keV band: 0.192000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   95.072   -0.060   95.012
T90    81.056   -0.028   81.028
T50    12.752    0.084   12.836
Peak    1.000   -0.072    0.928
  • Click here for the BAT GCN circular template
  • Special notes of this burst

    Image

    Pre-slew 15.0-350.0 keV image (Event data)

    #   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
      152.3052   -26.6474   0.0054    34.0680  -175.1568         1.7368904     35.592 TRIG_00638946                 
     
    Foreground time interval of the image:
     -0.060   9.137 (delta_t =   9.197 [sec])
    Background time interval of the image:
    -239.564  -0.060 (delta_t = 239.504 [sec])
    

    Lightcurves

    Notes:

    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 0.064000
    

    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 0.064000
    

    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 0.064000
    

    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:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from   -0.060 sec. to   95.012 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.17156     ( -0.152602   0.149173 )
    Norm@50keV  : 1.53899E-03    ( -0.000126803   0.000126385 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.85 using 59 PHA bins.
    # Reduced chi-squared =          1.085 for     57 degrees of freedom 
    # Null hypothesis probability =   3.070241e-01
     
    Photon flux (15-150 keV)    in 95.07 sec: 0.179957 ( -0.0155706  0.0156588 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.4966e-06 ( -1.31579e-07  1.32055e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.060 sec. to   95.012 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.16699     ( -0.334285   0.202061 )
    Epeak [keV] : 1.00000E+04      (   )
    Norm@50keV  : 1.54658E-03    ( -0.000126215   0.000125975 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.88 using 59 PHA bins.
    # Reduced chi-squared =          1.105 for     56 degrees of freedom 
    # Null hypothesis probability =   2.743960e-01
     
    Photon flux (15-150 keV)    in 95.07 sec: 0.180035 ( -0.015655  0.015494 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.49299e-06 ( -1.27926e-07  1.36197e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.060 sec. to   95.012 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 4.81278   ( -4.81278   -4.81278 )
    beta        : -1.18901    ( -0.158639   0.158067 )
    Epeak [keV] : 21.4694      ( -21.4694 8.47686 )
    Norm@50keV   : 213.646    ( -17.4072   406961 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.68 using 59 PHA bins.
    # Reduced chi-squared =          1.121 for     55 degrees of freedom 
    # Null hypothesis probability =   2.496669e-01
     
    Photon flux (15-150 keV)    in 95.07 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]    : 21.0963  (-2.48908  2.96997)
    R^2/D10^2   : 6.81423E-03  (-0.00236151   0.00348094)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         104.24 using 59 PHA bins.
    # Reduced chi-squared =         1.8288 for     57 degrees of freedom 
    # Null hypothesis probability =   1.356462e-04
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.436e-08   9.935e-09
    25- 50  2.802e-07   3.950e-08
    50-150  9.299e-07   1.300e-07
    15-150  1.265e-06   1.340e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (      )
    Norm        : 0.756977       (-0.0633426     0.0633315)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          82.50 using 59 PHA bins.
    # Reduced chi-squared =          1.447 for     57 degrees of freedom 
    # Null hypothesis probability =   1.524951e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.793e-07   1.901e-08
    25- 50  3.448e-07   6.417e-08
    50-150  7.563e-07   3.164e-07
    15-150  1.280e-06   3.628e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 7.33219        (-1.69354      2.3453)
    R1^2/D10^2  : 0.145880        (-0.0873579      0.228997)
    kT2 [keV]   : 36.8598        (-8.45652      20.6537)
    R2^2/D10^2  : 1.03556E-03    (-0.000725845   0.0012931)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.96 using 59 PHA bins.
    # Reduced chi-squared =          1.108 for     55 degrees of freedom 
    # Null hypothesis probability =   2.702203e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.437e-07   5.645e-08
    25- 50  3.091e-07   1.024e-07
    50-150  1.083e-06   3.962e-07
    15-150  1.536e-06   5.450e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from   -0.072 sec. to    0.928 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.802818     ( -0.062327   0.0617769 )
    Norm@50keV  : 0.104953    ( -0.00368044   0.00366314 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.54 using 59 PHA bins.
    # Reduced chi-squared =         0.8691 for     57 degrees of freedom 
    # Null hypothesis probability =   7.481738e-01
     
    Photon flux (15-150 keV)    in 1 sec: 12.0612 ( -0.414943  0.41531 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.22501e-06 ( -4.55728e-08  4.56843e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.072 sec. to    0.928 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.795134     ( -0.0626146   0.0624962 )
    Epeak [keV] : 9999.06      ( -9999 -9999 )
    Norm@50keV  : 0.105708    ( -0.00364058   0.0296961 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.53 using 59 PHA bins.
    # Reduced chi-squared =         0.8844 for     56 degrees of freedom 
    # Null hypothesis probability =   7.167891e-01
     
    Photon flux (15-150 keV)    in 1 sec: 12.0579 ( -0.4322  0.3237 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.22787e-06 ( 0  0 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.072 sec. to    0.928 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.909223   ( 0.909223   0.909223 )
    beta        : -0.802818    ( -0.0617624   0.0623528 )
    Epeak [keV] : 13.5927      ( -13.5927 -13.5927 )
    Norm@50keV   : 0.155662    ( -0.0492149   1.42956e+06 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.54 using 59 PHA bins.
    # Reduced chi-squared =         0.9007 for     55 degrees of freedom 
    # Null hypothesis probability =   6.825869e-01
     
    Photon flux (15-150 keV)    in 1 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]    : 25.7422  (  )
    R^2/D10^2   : 0.281508  (   )
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         174.72 using 59 PHA bins.
    # Reduced chi-squared =         3.0653 for     57 degrees of freedom 
    # Null hypothesis probability =   7.055066e-14
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.190e-08   2.190e-09
    25- 50  1.837e-07   9.400e-09
    50-150  8.982e-07   4.365e-08
    15-150  1.114e-06   4.900e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.363       (      )
    Norm        : 46.6713       (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         429.46 using 59 PHA bins.
    # Reduced chi-squared =         7.5343 for     57 degrees of freedom 
    # Null hypothesis probability =   1.486360e-58
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.162e-07   4.150e-09
    25- 50  2.236e-07   8.800e-09
    50-150  4.903e-07   1.790e-08
    15-150  8.301e-07   3.260e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 9.63718        (-2.17274      2.69622)
    R1^2/D10^2  : 2.67055        (-1.21473      2.93688)
    kT2 [keV]   : 43.3965        (-7.73782      18.3739)
    R2^2/D10^2  : 5.42902E-02    (-0.0327122   0.0426703)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.45 using 59 PHA bins.
    # Reduced chi-squared =          1.063 for     55 degrees of freedom 
    # Null hypothesis probability =   3.498279e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.226e-08   8.030e-09
    25- 50  2.042e-07   2.355e-08
    50-150  9.681e-07   1.276e-07
    15-150  1.235e-06   1.497e-07
    

    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: 0.866269     ( -0.0915471   0.0896495 )
    Norm@50keV  : 1.20181E-02    ( -0.000616037   0.000611315 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.17 using 59 PHA bins.
    # Reduced chi-squared =         0.8275 for     57 degrees of freedom 
    # Null hypothesis probability =   8.202317e-01
     
    Photon flux (15-150 keV)    in 9.197 sec: 1.37935 ( -0.0699434  0.0702664 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.25705e-06 ( -6.29685e-08  6.31265e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.862868     ( -0.0954697   0.0873644 )
    Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
    Norm@50keV  : 1.20971E-02    ( -0.000624323   0.00262173 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.23 using 59 PHA bins.
    # Reduced chi-squared =         0.8435 for     56 degrees of freedom 
    # Null hypothesis probability =   7.915924e-01
     
    Photon flux (15-150 keV)    in 9.197 sec: 1.37979 ( -0.0709  0.06936 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.2567e-06 ( -6.21441e-08  6.29259e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.808287   ( 0.808224   0.808224 )
    beta        : -0.866269    ( -0.0896134   0.0916247 )
    Epeak [keV] : 14.1862      ( -14.1869 -14.1869 )
    Norm@50keV   : 1.81569E-02    ( -0.00673019   0 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.17 using 59 PHA bins.
    # Reduced chi-squared =         0.8576 for     55 degrees of freedom 
    # Null hypothesis probability =   7.645111e-01
     
    Photon flux (15-150 keV)    in 9.197 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)  = 3.09e-07
    S(50-100 keV) = 5.49e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 81.055999994278 sec.
    Hardness ratio (energy fluence ratio) = 1.7767
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.58833
    Count Ratio (50-100 keV) / (15-25 keV) = 1.76558
    

    Mask shadow pattern

    IMX = -6.738218905893313E-01, IMY = 5.709394877316486E-02
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.064000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.064000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.064000
    

    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:
    -239.564000 -0.060000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.5888 -40.6384    5.1  53.7 -175.0   1.4619   2.3    5.7	Vela X-1                      
    201.3187 -30.4920    3.9  41.0  111.8   2.4750   2.9 ------	UNKNOWN                       
    121.7342 -32.1863    3.5  58.8 -159.3   4.8241   3.3 ------	UNKNOWN                       
    189.6613  58.5217    2.3  59.2  -20.4   6.2319   4.9 ------	UNKNOWN                       
    130.4924 -16.6153    2.6  45.7 -144.5   1.8881   4.4 ------	UNKNOWN                       
    147.0256  31.9921    3.1  40.0  -66.1   2.1285   3.7 ------	UNKNOWN                       
    129.5737   3.0681    2.7  43.8 -116.5   3.5777   4.3 ------	UNKNOWN                       
    

    Pre-slew background subtracted image of 15-350 keV band

    Time interval of the image:
    -0.060000 9.136600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.4894 -40.4525    8.2  53.7 -174.7   0.1706   1.4    6.4	Vela X-1                      
    152.3052 -26.6474    0.3  34.1 -175.2   1.7369  35.6 ------	UNKNOWN                       
    131.1279 -37.3112    2.4  54.5 -169.1   0.6473   4.9 ------	UNKNOWN                       
    176.6153  52.2707    2.0  51.6  -27.7   0.6781   5.9 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    75.536620 962.566000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.5272 -40.5526    1.7  19.7 -137.4   3.9709   6.8    0.1	Vela X-1                      
    170.3862 -60.6351    4.4  36.2  167.0   2.2742   2.6    2.2	Cen X-3                       
    186.6944 -62.7769    0.8  42.6  159.5  17.8632  13.7    1.1	GX 301-2                      
    175.5856  19.0359    3.9  50.9   30.7   8.4977   3.0 ------	UNKNOWN                       
    161.1524 -44.2019    2.8  19.0  162.1   2.2895   4.2 ------	UNKNOWN                       
    101.4962 -38.0470    3.9  43.9 -116.3   7.7909   3.0 ------	UNKNOWN                       
    
    Plot creation:
    Thu May 28 12:57:41 EDT 2015