batgrbproduct analysis for trigger=868312

batgrbproduct Analysis for Trigger=868312

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Dec 17 17:32:18 EST 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger868312
======================================================================

  Trigger: 00868312      Segment: 000

  BAT Trigger Time: 561922234.944   [s; MET]
      Trigger Stop: 561922240.448   [s; MET]
               UTC: 2018-10-22T17:30:13.147700    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 56.7952243531036   Dec: -29.3323371797094  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.23
     Image Trigger?:     NO
     Rate S/N Ratio:     13.0384048104053  [ if not an image trigger ]
     Image S/N Ratio:    7.23

  Flight Position:   [ source = BAT ]
    RA: 56.7952243531036   Dec: -29.3323371797094  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 56.8262198756328   Dec: -29.3380471074766  [deg; J2000]  
        { 03h 47m 18.3s , -29d 20' 17.0" }
         +/- 2.96330368269607 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.46562194103079 [arcmin] (formal 1-sigma fit error)
    SNR: 6.44395406680995
 
  Angular difference between Flight and Ground position is 1.657058 arcmin
 
  Partial Coding Fraction: 1.03125    [ including projection effects ]

  Duration
     T90: 7.93599998950958 +/- 2.58436520285285
        Measured from: -1.15600001811981
                   to: 6.77999997138977     [s; relative to TRIGTIME]
     T50: 3.73599994182587 +/- 2.07183882053921
        Measured from: 1.21200001239777
                   to: 4.94799995422363     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 4.40400004386902     
                   to: 5.40400004386902     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.64400005340576     
                   to: 7.96399998664856     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.059566   0.082269   0.095226   0.057324
           0.020402   0.021639   0.020195   0.018604 [error]
 Peak      0.009475   0.015498   0.024105   0.017462
           0.006506   0.007154   0.006987   0.006166 [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 1.33e-08 3.40e-08 6.98e-08 3.63e-07 1.88e-07 4.80e-07   erg/cm2
              Error 6.56e-09 9.96e-09 1.86e-08 2.39e-07 4.93e-08 2.47e-07   erg/cm2
Peak flux Power-law 1.08e-01 1.31e-01 1.15e-01 1.72e-01 4.15e-01 5.26e-01   ph/cm2/s
              Error 6.93e-02 5.47e-02 5.16e-02 1.60e-01 1.58e-01 2.19e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.30e-08 3.41e-08 7.03e-08 3.23e-07 1.87e-07 3.67e-07   erg/cm2
              Error 6.82e-09 1.06e-08 2.09e-08 -------- 5.14e-08 3.03e-07   erg/cm2
Peak flux Cutoff-PL 5.82e-02 1.44e-01 1.43e-01 4.04e-02 3.79e-01 3.86e-01   ph/cm2/s
              Error 8.07e-02 9.12e-02 -------- 1.15e-01 1.79e-01 2.27e-01   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    0.962    0.444    -      -           1.79e-03 4.27e-04   59.860 57
CPL   0.956    0.630    9987.7    0.0      1.80e-03 6.06e-03   59.860 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.192    0.640    -      -           3.54e-03 1.35e-03   59.160 57
CPL  -1.111    1.130      75.4  -25.4      3.81e-02 5.23e+01   57.790 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: 7.680000 sec.
T50 in the 50-300 keV band: 3.840000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    9.608   -1.644    7.964
T90     7.936   -1.156    6.780
T50     3.736    1.212    4.948
Peak    1.000    4.404    5.404
  • Click here for the BAT GCN circular template
  • 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
       56.8262   -29.3380   0.0298     1.0725   136.9050         0.2607231      6.444 TRIG_00868312                 
     
    Foreground time interval of the image:
     -1.644   7.964 (delta_t =   9.608 [sec])
    Background time interval of the image:
    -239.944  -1.644 (delta_t = 238.300 [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 5.504000
    

    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 5.504000
    

    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 5.504000
    

    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   -1.644 sec. to    7.964 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.961890     ( -0.462632   0.426004 )
    Norm@50keV  : 1.78590E-03    ( -0.000429643   0.000425131 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.86 using 59 PHA bins.
    # Reduced chi-squared =          1.050 for     57 degrees of freedom 
    # Null hypothesis probability =   3.722022e-01
     
    Photon flux (15-150 keV)    in 9.608 sec: 0.205262 ( -0.049519  0.049805 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.88136e-07 ( -4.88645e-08  4.97028e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -1.644 sec. to    7.964 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.955856     ( -1.99715   -0.737134 )
    Epeak [keV] : 9987.73      ( -9960.41 -9960.41 )
    Norm@50keV  : 1.79704E-03    ( -0.000423718   0.0116876 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.86 using 59 PHA bins.
    # Reduced chi-squared =          1.069 for     56 degrees of freedom 
    # Null hypothesis probability =   3.374076e-01
     
    Photon flux (15-150 keV)    in 9.608 sec: 0.204505 ( -0.051965  0.050372 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.8725e-07 ( -5.25021e-08  5.03205e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -1.644 sec. to    7.964 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]    : 23.6982  (-6.54315  11.1287)
    R^2/D10^2   : 5.81522E-03  (-0.00394255   0.0100726)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.64 using 59 PHA bins.
    # Reduced chi-squared =          1.099 for     57 degrees of freedom 
    # Null hypothesis probability =   2.831666e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.603e-09   3.352e-09
    25- 50  3.091e-08   1.609e-08
    50-150  1.295e-07   7.153e-08
    15-150  1.660e-07   8.921e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (-75.8636      -200)
    Norm        : 0.824058       (-0.204653     0.204653)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.92 using 59 PHA bins.
    # Reduced chi-squared =          1.139 for     57 degrees of freedom 
    # Null hypothesis probability =   2.200591e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.971e-08   1.184e-08
    25- 50  3.792e-08   2.311e-08
    50-150  8.317e-08   4.958e-08
    15-150  1.408e-07   8.450e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 5.64861        (-2.99534      6.03025)
    R1^2/D10^2  : 0.314629        (-0.303827      7.4106)
    kT2 [keV]   : 30.5749        (-10.1208      67.6478)
    R2^2/D10^2  : 2.47341E-03    (-0.00224628   0.00644101)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.86 using 59 PHA bins.
    # Reduced chi-squared =          1.070 for     55 degrees of freedom 
    # Null hypothesis probability =   3.362022e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.512e-08   9.555e-09
    25- 50  3.155e-08   1.640e-08
    50-150  1.407e-07   8.441e-08
    15-150  1.873e-07   1.058e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    4.404 sec. to    5.404 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.19232     ( -0.635132   0.645684 )
    Norm@50keV  : 3.53582E-03    ( -0.00135222   0.00134487 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.16 using 59 PHA bins.
    # Reduced chi-squared =          1.038 for     57 degrees of freedom 
    # Null hypothesis probability =   3.967057e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.414595 ( -0.157749  0.158047 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.59534e-08 ( -1.52033e-08  1.57918e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    4.404 sec. to    5.404 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -1.11123     ( 1.15332   3.41279 )
    Epeak [keV] : 75.4480      ( -24.3332 -75.1398 )
    Norm@50keV  : 3.80843E-02    ( -0.040345   104.644 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          57.79 using 59 PHA bins.
    # Reduced chi-squared =          1.032 for     56 degrees of freedom 
    # Null hypothesis probability =   4.090747e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.378558 ( -0.187768  0.169491 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.26926e-08 ( -1.39884e-08  1.64027e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    4.404 sec. to    5.404 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]    : 18.8505  (-5.8492  9.49696)
    R^2/D10^2   : 2.52975E-02  (-0.0252991   0.05837)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          57.68 using 59 PHA bins.
    # Reduced chi-squared =          1.012 for     57 degrees of freedom 
    # Null hypothesis probability =   4.500716e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.772e-09   1.188e-09
    25- 50  8.475e-09   5.170e-09
    50-150  2.210e-08   1.431e-08
    15-150  3.234e-08   2.056e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.357       (-199.361      -199.361)
    Norm        : 1.67865       (-0.646049     0.646842)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.77 using 59 PHA bins.
    # Reduced chi-squared =          1.049 for     57 degrees of freedom 
    # Null hypothesis probability =   3.752926e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.180e-09   2.711e-09
    25- 50  8.041e-09   5.180e-09
    50-150  1.763e-08   1.144e-08
    15-150  2.986e-08   1.902e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 2.40348        (-2.408      24.3247)
    R1^2/D10^2  : 28.4081        (-28.2494      -28.2494)
    kT2 [keV]   : 19.7787        (-6.284      -19.7792)
    R2^2/D10^2  : 2.09592E-02    (-0.020957   0.0506144)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          57.05 using 59 PHA bins.
    # Reduced chi-squared =          1.037 for     55 degrees of freedom 
    # Null hypothesis probability =   3.988150e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.752e-09   1.345e-09
    25- 50  7.922e-09   4.852e-09
    50-150  2.273e-08   1.524e-08
    15-150  3.340e-08   2.227e-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: 0.961890     ( -0.462632   0.426004 )
    Norm@50keV  : 1.78590E-03    ( -0.000429643   0.000425131 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.86 using 59 PHA bins.
    # Reduced chi-squared =          1.050 for     57 degrees of freedom 
    # Null hypothesis probability =   3.722022e-01
     
    Photon flux (15-150 keV)    in 9.608 sec: 0.205267 ( -0.0495185  0.0498025 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.88128e-07 ( -4.88578e-08  4.97695e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.880268     (     )
    Epeak [keV] : 784.671      (   )
    Norm@50keV  : 1.94260E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.86 using 59 PHA bins.
    # Reduced chi-squared =          1.069 for     56 degrees of freedom 
    # Null hypothesis probability =   3.376342e-01
     
    Photon flux (15-150 keV)    in 9.608 sec: 0.204494 ( -0.051968  0.050361 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.87339e-07 ( -5.23876e-08  5.03286e-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)  = 3.40e-08
    S(50-100 keV) = 6.98e-08
    

    T90 vs. Hardness ratio plot

    T90                                   = 7.93599998950958 sec.
    Hardness ratio (energy fluence ratio) = 2.05294
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.38114
    Count Ratio (50-100 keV) / (15-25 keV) = 1.59866
    

    Mask shadow pattern

    IMX = -1.367079274893475E-02, IMY = -1.279064624783077E-02
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 5.504000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 5.504000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 5.504000
    

    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:
    -239.944000 -1.644000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     13.7721 -26.7913    2.4  37.7   40.1   2.1671   4.7 ------	UNKNOWN                       
      9.1182 -30.5130    2.9  40.8   32.9   1.8259   4.0 ------	UNKNOWN                       
    334.0981 -66.4745    3.0  59.5  -17.0   5.5291   3.8 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -1.644000 7.964000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    353.5549 -41.9435    2.4  51.2   14.1   0.5963   4.8 ------	UNKNOWN                       
     56.8262 -29.3380    1.8   1.1  136.9   0.2606   6.4 ------	UNKNOWN                       
     23.1272 -70.6138    2.2  44.3  -29.1   0.3914   5.3 ------	UNKNOWN                       
    110.9287  -6.9261    2.5  55.8 -147.7   1.0819   4.5 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    76.356600 962.171100
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    354.2107 -32.4129    3.2  53.0   19.5  10.3026   3.7 ------	UNKNOWN                       
      5.7383 -30.4144    3.2  43.9   25.1   4.2180   3.6 ------	UNKNOWN                       
    352.1845 -47.7740    3.0  52.1    0.0   5.3932   3.9 ------	UNKNOWN                       
     92.0481 -42.8151    4.7  31.2 -105.0   2.5897   2.4 ------	UNKNOWN                       
    
    Plot creation:
    Mon Dec 17 21:15:58 EST 2018