batgrbproduct analysis for trigger=997453

batgrbproduct Analysis for Trigger=997453

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Wed Oct 19 23:37:55 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger997453
======================================================================

  Trigger: 00997453      Segment: 000

  BAT Trigger Time: 622763462.72   [s; MET]
      Trigger Stop: 622763463.744   [s; MET]
               UTC: 2020-09-25T21:50:37.022000    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 246.851224404343   Dec: 78.3941848869908  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.68
     Image Trigger?:     NO
     Rate S/N Ratio:     11.8743420870379  [ if not an image trigger ]
     Image S/N Ratio:    7.68

  Flight Position:   [ source = BAT ]
    RA: 246.851224404343   Dec: 78.3941848869908  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 246.897706429357   Dec: 78.394871204034  [deg; J2000]  
        { 16h 27m 35.4s , +78d 23' 41.5" }
         +/- 1.21647069658082 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.409395088796566 [arcmin] (formal 1-sigma fit error)
    SNR: 22.9902975332466
 
  Angular difference between Flight and Ground position is 0.562561 arcmin
 
  Partial Coding Fraction: 0.5078125    [ including projection effects ]

  Duration
     T90: 18.8039999008179 +/- 1.47851957461597
        Measured from: 0.667999982833862
                   to: 19.4719998836517     [s; relative to TRIGTIME]
     T50: 4.30400002002716 +/- 2.04986052305482
        Measured from: 2.99599993228912
                   to: 7.29999995231628     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 4.38399994373322     
                   to: 5.38399994373322     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.199999928474426     
                   to: 20.9319999217987     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.697108   0.741469   0.392039   0.051799
           0.044433   0.045855   0.039774   0.035319 [error]
 Peak      0.133394   0.119752   0.080696   0.001831
           0.011463   0.012541   0.010521   0.008401 [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 2.30e-07 3.13e-07 3.15e-07 5.76e-07 1.05e-06 1.44e-06   erg/cm2
              Error 2.44e-08 2.27e-08 3.91e-08 1.42e-07 8.94e-08 1.83e-07   erg/cm2
Peak flux Power-law 1.32e+00 9.84e-01 4.88e-01 3.44e-01 2.96e+00 3.14e+00   ph/cm2/s
              Error 1.94e-01 1.04e-01 8.64e-02 1.14e-01 3.11e-01 3.34e-01   ph/cm2/s
 
Fluence   Cutoff-PL -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux Cutoff-PL 1.24e+00 1.06e+00 4.96e-01 1.62e-01 2.91e+00 2.96e+00   ph/cm2/s
              Error 2.17e-01 1.35e-01 9.59e-02 1.54e-01 3.14e-01 3.45e-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    1.990    0.138    -      -           5.47e-03 4.89e-04   52.400 57
CPL   1.465    0.576      43.1   80.3      1.09e-02 9.46e-03   49.630 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.013    0.193    -      -           1.96e-02 2.64e-03   66.050 57
CPL   1.381    0.730      42.7   -1.3      4.46e-02 5.17e-02   63.500 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: 4.928000 sec.
T50 in the 50-300 keV band: 3.392000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   20.732    0.200   20.932
T90    18.804    0.668   19.472
T50     4.304    2.996    7.300
Peak    1.000    4.384    5.384
  • 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
      246.8977    78.3949   0.0084    29.0599   126.2996         1.5330379     22.990 TRIG_00997453                 
     
    Foreground time interval of the image:
      0.200  10.381 (delta_t =  10.181 [sec])
    Background time interval of the image:
    -239.720   0.200 (delta_t = 239.920 [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    0.200 sec. to   20.932 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.98991     ( -0.135816   0.140577 )
    Norm@50keV  : 5.47260E-03    ( -0.000492798   0.000485181 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   52.40     using 59 bins.
     Reduced chi-squared = 0.919298
    # Null hypothesis probability of 6.48e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 20.73 sec: 0.817165 ( -0.059504  0.059539 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.04585e-06 ( -8.87669e-08  9.00486e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.200 sec. to   20.932 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.46546     ( -0.617606   0.534396 )
    Epeak [keV] : 43.0963      ( -31.0091 129.658 )
    Norm@50keV  : 1.08968E-02    ( -0.00540433   0.01351 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   49.63     using 59 bins.
     Reduced chi-squared = 0.88625
    # Null hypothesis probability of 7.13e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 20.73 sec: 0.798298 ( -0.062426  0.062455 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.200 sec. to   20.932 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]    : 10.1335  (-0.912181  1.00319)
    R^2/D10^2   : 0.353646  (-0.107634   0.155161)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   88.78     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 4.47e-03 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.540e-07   1.971e-08
    25- 50  3.901e-07   3.255e-08
    50-150  2.115e-07   4.342e-08
    15-150  7.556e-07   6.126e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 67.9917       (-14.2152      20.1125)
    Norm        : 4.04133       (-0.471723     0.551001)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   49.79     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 7.40e-01 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.142e-07   2.173e-08
    25- 50  3.382e-07   2.446e-08
    50-150  4.250e-07   8.126e-08
    15-150  9.774e-07   8.541e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 5.45692        (-1.02125      1.16599)
    R1^2/D10^2  : 2.60917        (-1.31373      3.22885)
    kT2 [keV]   : 18.1099        (-3.30634      5.30651)
    R2^2/D10^2  : 2.78732E-02    (-0.0180017   0.0367028)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   47.35     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 7.58e-01 with 55 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.222e-07   6.870e-08
    25- 50  3.244e-07   8.168e-08
    50-150  4.285e-07   2.214e-07
    15-150  9.751e-07   3.200e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    4.384 sec. to    5.384 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.01319     ( -0.186908   0.199849 )
    Norm@50keV  : 1.95835E-02    ( -0.00267255   0.00260717 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   66.05     using 59 bins.
     Reduced chi-squared = 1.15877
    # Null hypothesis probability of 1.93e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 1 sec: 2.95571 ( -0.31057  0.31059 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.80759e-07 ( -2.29034e-08  2.33114e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    4.384 sec. to    5.384 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.38133     ( -0.785325   0.675496 )
    Epeak [keV] : 42.7285      ( -40.1301 -42.7358 )
    Norm@50keV  : 4.45894E-02    ( -0.0256606   0.0777178 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   63.50     using 59 bins.
     Reduced chi-squared = 1.13393
    # Null hypothesis probability of 2.29e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 1 sec: 2.90743 ( -0.31392  0.31425 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.73057e-07 ( -2.36366e-08  2.44716e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    4.384 sec. to    5.384 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]    : 10.5936  (-1.46114  1.63755)
    R^2/D10^2   : 1.11211  (-0.459778   0.826245)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   87.73     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 5.54e-03 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.586e-08   4.905e-09
    25- 50  6.959e-08   1.006e-08
    50-150  4.282e-08   1.115e-08
    15-150  1.383e-07   1.750e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 67.6244       (-18.2386      28.8338)
    Norm        : 14.8321       (-2.2964     2.6602)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   63.58     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 2.56e-01 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.791e-08   5.265e-09
    25- 50  5.974e-08   7.305e-09
    50-150  7.477e-08   1.976e-08
    15-150  1.724e-07   2.365e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 4.53443        (-1.01561      1.25097)
    R1^2/D10^2  : 19.7754        (-12.4898      42.1167)
    kT2 [keV]   : 16.9202        (-2.98846      4.11658)
    R2^2/D10^2  : 0.148102    (-0.0868722   0.147558)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   58.85     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 3.36e-01 with 55 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.063e-08   2.002e-08
    25- 50  5.440e-08   2.361e-08
    50-150  7.819e-08   3.798e-08
    15-150  1.732e-07   6.365e-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: 1.93609     ( -0.124188   0.127974 )
    Norm@50keV  : 8.89224E-03    ( -0.00072906   0.00071955 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   49.32     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 7.55e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 10.18 sec: 1.29613 ( -0.0892567  0.0893084 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 8.32736e-07 ( -6.60407e-08  6.6798e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.24947     ( -0.573038   0.507315 )
    Epeak [keV] : 47.4408      ( -9.7463 19.5611 )
    Norm@50keV  : 2.15627E-02    ( -0.0101776   0.0232859 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   43.75     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 8.83e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 10.18 sec: 1.25864 ( -0.09301  0.09309 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.81481e-07 ( -7.30985e-08  7.53615e-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)  = 3.13e-07
    S(50-100 keV) = 3.15e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 18.8039999008179 sec.
    Hardness ratio (energy fluence ratio) = 1.00639
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.06364
    Count Ratio (50-100 keV) / (15-25 keV) = 0.562379
    

    Mask shadow pattern

    IMX = -3.289651009202840E-01, IMY = -4.478379599217988E-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:
    -239.720000 0.200000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.4570  35.3871   24.3  53.3 -176.0  -0.4333  -0.5    2.7	Her X-1                       
    110.7972  31.0174    2.6  52.4   13.0   4.1340   4.3 ------	UNKNOWN                       
    146.9274  45.9607    3.1  22.7   -6.0   0.9905   3.7 ------	UNKNOWN                       
    

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

    Time interval of the image:
    0.200000 10.380600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.3121  35.3322    9.2  53.3 -175.8   0.1836   1.3    7.2	Her X-1                       
    246.8977  78.3949    0.5  29.1  126.3   1.5330  23.0 ------	UNKNOWN                       
    204.9508  31.9103    2.6  32.1 -121.8   0.2894   4.5 ------	UNKNOWN                       
    147.2288  13.1872    2.8  51.0  -35.8   0.5672   4.1 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    62.380630 415.073500
    416.280000 962.414900
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.2977  35.4051    9.4  43.1 -162.8  -1.8321  -1.2    8.7	Her X-1                       
    299.6745  35.2196    3.9  48.4  145.6  11.3850   2.9    4.3	Cyg X-1                       
    308.1418  40.9318    3.9  44.4  134.8   9.5283   3.0    1.9	Cyg X-3                       
    230.6846  27.9779    3.2  50.9 -135.4  14.0341   3.6 ------	UNKNOWN                       
    
    Plot creation:
    Thu Oct 20 00:47:58 EDT 2022