batgrbproduct analysis for trigger=994143

batgrbproduct Analysis for Trigger=994143

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Wed Oct 19 23:59:03 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger994143
======================================================================

  Trigger: 00994143      Segment: 000

  BAT Trigger Time: 620624877.12   [s; MET]
      Trigger Stop: 620624878.144   [s; MET]
               UTC: 2020-09-01T03:47:31.562720    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 61.7575803016358   Dec: -59.8799948410037  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    17.5
     Image Trigger?:     NO
     Rate S/N Ratio:     44  [ if not an image trigger ]
     Image S/N Ratio:    17.5

  Flight Position:   [ source = BAT ]
    RA: 61.7575803016358   Dec: -59.8799948410037  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 61.7597438154546   Dec: -59.9012110074026  [deg; J2000]  
        { 04h 07m 02.3s , -59d 54' 04.4" }
         +/- 1.13778612808355 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.366614758815567 [arcmin] (formal 1-sigma fit error)
    SNR: 25.2948296650211
 
  Angular difference between Flight and Ground position is 1.274635 arcmin
 
  Partial Coding Fraction: 0.2148438    [ including projection effects ]

  Duration
     T90: 20.3519999980927 +/- 7.58655228712125
        Measured from: -3.88800001144409
                   to: 16.4639999866486     [s; relative to TRIGTIME]
     T50: 4.92800009250641 +/- 0.838436735765795
        Measured from: -1.42400002479553
                   to: 3.50400006771088     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0119999647140503     
                   to: 0.98800003528595     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.432000041008     
                   to: 26.9119999408722     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.380540   1.717062   1.243571   0.316166
           0.088481   0.091258   0.077976   0.065089 [error]
 Peak      0.241599   0.324056   0.277800   0.044926
           0.021252   0.024707   0.020855   0.013820 [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 4.86e-07 7.87e-07 9.65e-07 2.33e-06 2.90e-06 4.58e-06   erg/cm2
              Error 4.90e-08 4.83e-08 7.86e-08 4.05e-07 1.87e-07 4.67e-07   erg/cm2
Peak flux Power-law 2.86e+00 2.57e+00 1.59e+00 1.49e+00 7.65e+00 8.52e+00   ph/cm2/s
              Error 3.60e-01 2.13e-01 1.65e-01 2.98e-01 6.29e-01 6.83e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.70e-07 6.33e-07 6.58e-07 1.44e-06 2.12e-06 3.13e-06   erg/cm2
              Error 6.34e-08 7.48e-08 6.04e-08 2.04e-07 2.34e-07 4.30e-07   erg/cm2
Peak flux Cutoff-PL 2.52e+00 2.77e+00 1.73e+00 7.94e-01 7.52e+00 7.81e+00   ph/cm2/s
              Error 4.29e-01 2.59e-01 2.01e-01 3.73e-01 6.38e-01 7.35e-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    1.705    0.107    -      -           1.00e-02 6.16e-04   54.720 57
CPL   1.619    0.400     216.3  -37.3      1.11e-02 4.57e-03   54.570 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.694    0.128    -      -           5.78e-02 4.86e-03   70.270 57
CPL   0.978    0.532      73.8   33.2      1.32e-01 8.63e-02   64.000 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: 12.160000 sec.
T50 in the 50-300 keV band: 4.480000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   31.344   -4.432   26.912
T90    20.352   -3.888   16.464
T50     4.928   -1.424    3.504
Peak    1.000   -0.012    0.988
  • 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
       61.7597   -59.9012   0.0076    39.8783   136.3441         4.9033566     25.295 TRIG_00994143                 
     
    Foreground time interval of the image:
     -4.432  26.912 (delta_t =  31.344 [sec])
    Background time interval of the image:
    -239.120  -4.432 (delta_t = 234.688 [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 1.024000
    

    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 1.024000
    

    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 1.024000
    

    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   -4.432 sec. to   26.912 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.70546     ( -0.10611   0.107089 )
    Norm@50keV  : 1.00087E-02    ( -0.000617933   0.000614828 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   54.72     using 59 bins.
     Reduced chi-squared = 0.96
    # Null hypothesis probability of 5.61e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 31.34 sec: 1.33187 ( -0.08229  0.08246 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.90341e-06 ( -1.86542e-07  1.87516e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -4.432 sec. to   26.912 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.61900     ( -0.407868   0.392754 )
    Epeak [keV] : 216.278      ( -141.626 -216.296 )
    Norm@50keV  : 1.10900E-02    ( -0.00248063   0.00666712 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   54.57     using 59 bins.
     Reduced chi-squared = 0.974464
    # Null hypothesis probability of 5.29e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 31.34 sec: 1.32625 ( -0.08583  0.08502 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.11519e-06 ( -2.48983e-07  2.19233e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from   -4.432 sec. to   26.912 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]    : 13.2846  (  )
    R^2/D10^2   : 0.216764  (   )
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                  138.43     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 1.00e-08 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.541e-07   2.819e-08
    25- 50  8.957e-07   6.801e-08
    50-150  1.012e-06   1.260e-07
    15-150  2.162e-06   1.724e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 142.446       (-35.2557      49.0844)
    Norm        : 5.45688       (-0.392742     0.491755)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   56.45     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 4.96e-01 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.410e-07   3.792e-08
    25- 50  8.113e-07   8.603e-08
    50-150  1.567e-06   5.206e-07
    15-150  2.819e-06   6.041e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 6.78474        (-1.03791      1.17057)
    R1^2/D10^2  : 1.83689        (-0.779973      1.525)
    kT2 [keV]   : 27.1224        (-4.94541      8.31076)
    R2^2/D10^2  : 1.26466E-02    (-0.00753216   0.0138481)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   53.43     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 5.35e-01 with 55 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.601e-07   8.822e-08
    25- 50  8.161e-07   1.277e-07
    50-150  1.613e-06   4.395e-07
    15-150  2.889e-06   5.779e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from   -0.012 sec. to    0.988 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.69380     ( -0.126324   0.129741 )
    Norm@50keV  : 5.77593E-02    ( -0.0048711   0.0048398 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   70.27     using 59 bins.
     Reduced chi-squared = 1.23281
    # Null hypothesis probability of 1.11e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 1 sec: 7.65487 ( -0.62841  0.629 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.35131e-07 ( -4.68161e-08  4.70258e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.012 sec. to    0.988 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.977827     ( -0.562685   0.500674 )
    Epeak [keV] : 73.8111      ( -14.589 51.7748 )
    Norm@50keV  : 0.131943    ( -0.0566626   0.115961 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   64.00     using 59 bins.
     Reduced chi-squared = 1.14286
    # Null hypothesis probability of 2.16e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 1 sec: 7.51674 ( -0.63763  0.63762 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.25037e-07 ( -4.8178e-08  4.82472e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.012 sec. to    0.988 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]    : 14.4140  (-1.34238  1.48316)
    R^2/D10^2   : 1.00591  (-0.301905   0.426138)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   97.60     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 6.57e-04 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.401e-08   6.865e-09
    25- 50  1.684e-07   1.850e-08
    50-150  2.338e-07   3.620e-08
    15-150  4.462e-07   4.295e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 140.455       (-37.7241      59.4698)
    Norm        : 32.2200       (-1.62358     3.44043)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   65.04     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 2.17e-01 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  8.318e-08   9.445e-09
    25- 50  1.527e-07   2.050e-08
    50-150  2.931e-07   1.132e-07
    15-150  5.289e-07   1.278e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 5.33570        (-1.26826      1.66729)
    R1^2/D10^2  : 20.7059        (-13.206      43.9549)
    kT2 [keV]   : 20.3342        (-2.80499      3.78833)
    R2^2/D10^2  : 0.239568    (-0.119626   0.191466)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   61.07     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 2.67e-01 with 55 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  8.382e-08   3.679e-08
    25- 50  1.451e-07   3.512e-08
    50-150  2.962e-07   6.675e-08
    15-150  5.250e-07   1.178e-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: 1.70546     ( -0.10611   0.107089 )
    Norm@50keV  : 1.00087E-02    ( -0.000617933   0.000614828 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   54.72     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 5.61e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 31.34 sec: 1.33182 ( -0.0822895  0.0824543 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.90301e-06 ( -1.86671e-07  1.87483e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.61893     ( -0.407862   0.392763 )
    Epeak [keV] : 216.140      ( -141.605 -216.295 )
    Norm@50keV  : 1.10909E-02    ( -0.00192919   0.00666738 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   54.57     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 5.29e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 31.34 sec: 1.32602 ( -0.0858  0.08555 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.88545e-06 ( -2.01946e-07  1.98633e-07 ) 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)  = 7.87e-07
    S(50-100 keV) = 9.65e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 20.3519999980927 sec.
    Hardness ratio (energy fluence ratio) = 1.22618
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.24376
    Count Ratio (50-100 keV) / (15-25 keV) = 0.900786
    

    Mask shadow pattern

    IMX = -6.044740482950214E-01, IMY = -5.767586574380681E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    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:
    -239.120000 -4.432000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.6029 -40.5900    1.8  22.9 -124.9   1.8064   6.4    4.0	Vela X-1                      
    170.5007 -60.4515    3.8   9.8   -3.5   0.7340   3.0   11.6	Cen X-3                       
    186.6892 -62.7987    1.2  16.7   14.7   2.0984   9.3    1.9	GX 301-2                      
    226.9856 -32.6355    3.2  55.4    0.8   3.3058   3.6 ------	UNKNOWN                       
    196.0097 -29.5056    2.4  43.8  -31.0   2.1188   4.7 ------	UNKNOWN                       
    143.9466 -34.7355    2.8  27.3 -106.7   1.2768   4.1 ------	UNKNOWN                       
    124.9049 -24.9643    3.3  40.6 -131.9   1.5789   3.5 ------	UNKNOWN                       
    177.5935 -23.6647    2.2  42.3  -56.6   3.4741   5.2 ------	UNKNOWN                       
    152.3884 -21.0205    3.9  40.7  -92.2   3.2455   3.0 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -4.432000 26.912000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.6036 -40.5757    5.7  22.9 -124.9   0.1851   2.0    3.6	Vela X-1                      
    170.6056 -60.7430    4.1   9.7   -1.7  -0.2146  -2.9   11.2	Cen X-3                       
    186.7488 -62.6716    5.5  16.8   14.3   0.1602   2.1    6.4	GX 301-2                      
     51.0033 -81.9884    2.3  30.6  100.6   0.6252   4.9 ------	UNKNOWN                       
     61.7597 -59.9012    0.5  39.9  136.3   4.9036  25.3 ------	UNKNOWN                       
    243.0330 -43.0485    2.8  54.2   20.7   1.5443   4.1 ------	UNKNOWN                       
    172.1260 -44.8317    2.5  21.1  -48.2   0.3658   4.7 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    573.280600 784.480600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    170.3654 -60.6645    7.7  45.9 -179.1   0.7082   1.5    2.9	Cen X-3                       
    186.6057 -62.7446    2.3  43.5  170.1   2.3022   5.0    2.1	GX 301-2                      
    244.9903 -15.6567    1.2  40.7   69.9   7.9790   9.5    1.2	Sco X-1                       
    206.4517  33.5151    2.4  54.3  -16.2   3.4532   4.9 ------	UNKNOWN                       
    178.2307  -7.2117    4.3  27.0  -84.0   0.8216   2.7 ------	UNKNOWN                       
    156.7657 -34.9633    3.1  42.4 -140.1   1.6170   3.7 ------	UNKNOWN                       
    150.0018 -27.2934    2.7  48.0 -129.0   4.4728   4.2 ------	UNKNOWN                       
    
    Plot creation:
    Thu Oct 20 00:52:55 EDT 2022