batgrbproduct analysis for trigger=1297832

batgrbproduct Analysis for Trigger=1297832

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sun Mar 23 17:46:21 EDT 2025
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1297832/GCN5_download_cron
======================================================================

  Trigger: 01297832      Segment: 000

  BAT Trigger Time: 764352408.128   [s; MET]
      Trigger Stop: 764352408.192   [s; MET]
               UTC: 2025-03-22T16:06:12.837500    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 106.733611936176   Dec: 7.19908023351788  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.28
     Image Trigger?:     NO
     Rate S/N Ratio:     41.3158565202272  [ if not an image trigger ]
     Image S/N Ratio:    7.28

  Flight Position:   [ source = BAT ]
    RA: 106.733611936176   Dec: 7.19908023351788  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 106.775227478262   Dec: 7.19660580634777  [deg; J2000]  
        { 07h 07m 06.1s , +07d 11' 47.8" }
         +/- 1.54547926696165 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.527644289461625 [arcmin] (formal 1-sigma fit error)
    SNR: 16.331576824991
 
  Angular difference between Flight and Ground position is 2.481700 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 0.623999953269958 +/- 0.0486620812716356
        Measured from: 0.00400006771087646
                   to: 0.628000020980835     [s; relative to TRIGTIME]
     T50: 0.360000014305115 +/- 0.0481664313780741
        Measured from: 0.0600000619888306
                   to: 0.420000076293945     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.162000060081482     
                   to: 0.837999939918518     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.671999931335449     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.021379   0.063989   0.069790   0.033604
           0.005653   0.006917   0.006513   0.005406 [error]
 Peak      0.024681   0.063486   0.072287   0.035082
           0.006606   0.007858   0.007155   0.005862 [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 6.78e-09 2.11e-08 5.36e-08 3.90e-07 1.46e-07 4.72e-07   erg/cm2
              Error 1.64e-09 3.09e-09 5.84e-09 9.91e-08 1.64e-08 1.01e-07   erg/cm2
Peak flux Power-law 2.15e-01 3.68e-01 4.81e-01 1.28e+00 1.41e+00 2.34e+00   ph/cm2/s
              Error 5.96e-02 6.29e-02 5.39e-02 3.17e-01 1.66e-01 3.20e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.78e-09 2.20e-08 5.77e-08 1.78e-07 1.42e-07 2.63e-07   erg/cm2
              Error 1.96e-09 3.51e-09 7.54e-09 1.57e-07 1.78e-08 1.74e-07   erg/cm2
Peak flux Cutoff-PL 1.92e-01 3.75e-01 5.07e-01 8.58e-01 1.40e+00 1.93e+00   ph/cm2/s
              Error 7.24e-02 6.76e-02 7.26e-02 5.14e-01 1.68e-01 5.17e-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    0.651    0.187    -      -           1.74e-02 2.01e-03   74.830 57
CPL   0.017    0.805     183.7  -53.9      3.29e-02 3.10e-02   72.760 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.614    0.207    -      -           1.21e-02 1.55e-03   68.240 57
CPL   0.214    0.734     269.2    0.0      1.79e-02 1.62e-02   67.520 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: 0.640000 sec.
T50 in the 50-300 keV band: 0.320000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.672    0.000    0.672
T90     0.624    0.004    0.628
T50     0.360    0.060    0.420
Peak    1.000   -0.162    0.838
  • 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
      106.7752  +7.1966 0.0117   14.5  165.8       0.2046    16.3  TRIG_01297832       
    ------------------------------------------
     
    Foreground time interval of the image:
      0.000   0.672 (delta_t =   0.672 [sec])
    Background time interval of the image:
    -239.128 -233.738 (delta_t =   5.390 [sec])
    -232.128 -162.998 (delta_t =  69.130 [sec])
    -162.128 -137.538 (delta_t =  24.590 [sec])
    -136.128   0.000 (delta_t = 136.128 [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)

    Spectra

    Notes:

    Time averaged spectrum fit using the pre-slew DRM

    Power-law model
    Time interval is from    0.000 sec. to    0.672 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.651474     ( -0.192775   0.180714 )
    Norm@50keV  : 1.73769E-02    ( -0.00202771   0.00199497 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          74.83 using 59 PHA bins.
    # Reduced chi-squared =          1.313 for     57 degrees of freedom 
    # Null hypothesis probability =   5.671194e-02
     
    Photon flux (15-150 keV)    in 0.672 sec: 2.01732 ( -0.220256  0.220782 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.45742e-07 ( -1.63522e-08  1.64157e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.000 sec. to    0.672 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.70647E-02     ( -0.910233   0.699027 )
    Epeak [keV] : 183.679      ( -75.7827 -183.635 )
    Norm@50keV  : 3.29089E-02    ( -0.0163535   0.0457457 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          72.76 using 59 PHA bins.
    # Reduced chi-squared =          1.299 for     56 degrees of freedom 
    # Null hypothesis probability =   6.550329e-02
     
    Photon flux (15-150 keV)    in 0.672 sec: 1.98515 ( -0.22412  0.22421 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.41734e-07 ( -1.79968e-08  1.75164e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.000 sec. to    0.672 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 5.00000   ( -5   -5 )
    beta        : -0.949005    ( -0.383944   0.262403 )
    Epeak [keV] : 43.1063      ( -10.8597 10.14 )
    Norm@50keV   : 49.0100    ( -5.09436   181.337 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          67.70 using 59 PHA bins.
    # Reduced chi-squared =          1.231 for     55 degrees of freedom 
    # Null hypothesis probability =   1.167663e-01
     
    Photon flux (15-150 keV)    in 0.672 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]    : 26.0835  (-3.77935  4.9524)
    R^2/D10^2   : 4.69969E-02  (-0.0186186   0.0280621)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          78.68 using 59 PHA bins.
    # Reduced chi-squared =          1.380 for     57 degrees of freedom 
    # Null hypothesis probability =   3.010193e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.648e-09   7.674e-10
    25- 50  2.114e-08   3.696e-09
    50-150  1.059e-07   1.700e-08
    15-150  1.307e-07   1.942e-08
    
    Thermal bremsstrahlung (OTTB)
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.363       (      )
    Norm        : 7.41520       (     )
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.241e-08   6.959e-09
    25- 50  2.387e-08   1.324e-08
    50-150  5.235e-08   2.871e-08
    15-150  8.862e-08   4.932e-08
    
    Double BB
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 16.2193        (-5.49746      4.56603)
    R1^2/D10^2  : 0.138647        (-0.0586449      0.14009)
    kT2 [keV]   : 200.000        (-157.884      -200)
    R2^2/D10^2  : 3.95498E-04    (-0.000161075   0.00225257)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.467e-09   3.119e-09
    25- 50  2.414e-08   1.430e-08
    50-150  1.084e-07   5.853e-08
    15-150  1.380e-07   7.194e-08
    

    Peak spectrum fit

    Power-law model
    Time interval is from   -0.162 sec. to    0.838 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.613559     ( -0.214909   0.198921 )
    Norm@50keV  : 1.21090E-02    ( -0.00156413   0.00152678 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          68.24 using 59 PHA bins.
    # Reduced chi-squared =          1.197 for     57 degrees of freedom 
    # Null hypothesis probability =   1.463904e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.41151 ( -0.165769  0.166425 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.53849e-07 ( -1.79748e-08  1.80315e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.162 sec. to    0.838 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.213511     ( -0.952467   0.514952 )
    Epeak [keV] : 269.166      ( -269.151 -269.151 )
    Norm@50keV  : 1.79302E-02    ( -0.00700632   0.0254705 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          67.52 using 59 PHA bins.
    # Reduced chi-squared =          1.206 for     56 degrees of freedom 
    # Null hypothesis probability =   1.392808e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.39725 ( -0.16802  0.16863 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.51612e-07 ( -1.9293e-08  1.8817e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.162 sec. to    0.838 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 5.00000   ( -5   -5 )
    beta        : -0.828493    ( -0.371977   0.268554 )
    Epeak [keV] : 40.3665      ( -12.3701 13.002 )
    Norm@50keV   : 46.4458    ( -5.1022   281.492 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          63.56 using 59 PHA bins.
    # Reduced chi-squared =          1.156 for     55 degrees of freedom 
    # Null hypothesis probability =   2.003667e-01
     
    Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    
    Single BB
     XSPEC: quit
     
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 27.7815  (-4.44901  6.14508)
    R^2/D10^2   : 2.73956E-02  (-0.0118452   0.0185457)
    (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  3.464e-09   8.025e-10
    25- 50  2.067e-08   3.970e-09
    50-150  1.157e-07   2.317e-08
    15-150  1.398e-07   2.265e-08
    
    Thermal bremsstrahlung (OTTB)
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.363       (      )
    Norm        : 5.31054       (     )
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.322e-08   7.500e-09
    25- 50  2.544e-08   1.418e-08
    50-150  5.579e-08   3.106e-08
    15-150  9.445e-08   5.265e-08
    
    Double BB
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 15.8807        (-3.84166      4.60896)
    R1^2/D10^2  : 9.86609E-02        (-0.0446243      0.114558)
    kT2 [keV]   : 200.000        (-151.911      -200)
    R2^2/D10^2  : 3.05943E-04    (-0.000115522   0.00160931)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.657e-09   3.239e-09
    25- 50  2.478e-08   1.452e-08
    50-150  1.209e-07   6.250e-08
    15-150  1.513e-07   1.015e-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: 0.651474     ( -0.192775   0.180714 )
    Norm@50keV  : 1.73769E-02    ( -0.00202771   0.00199497 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          74.83 using 59 PHA bins.
    # Reduced chi-squared =          1.313 for     57 degrees of freedom 
    # Null hypothesis probability =   5.671194e-02
     
    Photon flux (15-150 keV)    in 0.672 sec: 2.01732 ( -0.220256  0.220782 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.45742e-07 ( -1.63522e-08  1.64157e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.70647E-02     ( -0.910233   0.699027 )
    Epeak [keV] : 183.679      ( -75.7827 -183.635 )
    Norm@50keV  : 3.29089E-02    ( -0.0163535   0.0457457 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          72.76 using 59 PHA bins.
    # Reduced chi-squared =          1.299 for     56 degrees of freedom 
    # Null hypothesis probability =   6.550329e-02
     
    Photon flux (15-150 keV)    in 0.672 sec: 1.98515 ( -0.22412  0.22421 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.41734e-07 ( -1.79968e-08  1.75164e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 5.00000   ( -5   -5 )
    beta        : -0.949005    ( -0.383944   0.262403 )
    Epeak [keV] : 43.1063      ( -10.8597 10.14 )
    Norm@50keV   : 49.0100    ( -5.09436   181.337 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          67.70 using 59 PHA bins.
    # Reduced chi-squared =          1.231 for     55 degrees of freedom 
    # Null hypothesis probability =   1.167663e-01
     
    Photon flux (15-150 keV)    in 0.672 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)  = 2.11e-08
    S(50-100 keV) = 5.36e-08
    

    T90 vs. Hardness ratio plot

    T90                                   = 0.623999953269958 sec.
    Hardness ratio (energy fluence ratio) = 2.54028
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 2.99308
    Count Ratio (50-100 keV) / (15-25 keV) = 3.26442
    

    Mask shadow pattern

    IMX = -2.502583573890934E-01, IMY = -6.331530340810082E-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:
    -239.128000 -233.738000
    -232.128000 -162.998000
    -162.128000 -137.538000
    -136.128000 0.000000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     83.6378  22.0181    0.5  17.8  -81.9   9.2757  23.4    0.3	Crab                          
    129.1506 -16.3550    2.3  45.6  145.2   5.7064   5.0 ------	UNKNOWN                       
    134.4664  29.3793    3.0  29.7   69.3   2.2382   3.9 ------	UNKNOWN                       
     94.3546  59.5285    3.8  38.8   -5.0   1.5747   3.0 ------	UNKNOWN                       
    

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

    Time interval of the image:
    0.000000 0.672000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     83.6053  22.0100    3.9  17.8  -81.9  -0.0401  -3.0    1.6	Crab                          
    106.7752   7.1966    0.7  14.5  165.8   0.2046  16.3 ------	UNKNOWN                       
    102.4849 -30.0242    1.9  51.2 -177.8   0.1928   6.1 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    55.572600 143.463600
    144.872000 206.232000
    206.872000 218.472000
    219.872000 316.849100
    317.872000 359.752000
    360.872000 378.522000
    420.872000 430.382000
    450.872000 514.852000
    535.872000 582.592000
    583.872000 716.176200
    720.872000 801.332000
    802.872000 803.372000
    805.872000 898.622000
    899.872000 962.992000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     83.6496  22.0225    0.5  26.7  -56.5  32.1139  23.8    1.0	Crab                          
    117.9139  47.0720    3.1  41.0    9.0   6.3295   3.8 ------	UNKNOWN                       
     93.2838 -39.1377    3.0  48.0 -168.6   9.3911   3.8 ------	UNKNOWN                       
     72.4749  14.8152    2.5  34.4  -76.9   9.5890   4.7 ------	UNKNOWN                       
    
    Plot creation:
    Sun Mar 23 17:49:30 EDT 2025