batgrbproduct analysis for trigger=1252402

batgrbproduct Analysis for Trigger=1252402

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Fri Nov 15 20:04:07 EST 2024
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1252402
======================================================================

  Trigger: 01252402      Segment: 000

  BAT Trigger Time: 747158693.44   [s; MET]
      Trigger Stop: 747158701.632   [s; MET]
               UTC: 2024-09-04T16:04:19.325020    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 136.440024834508   Dec: -30.5064390558512  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.2
     Image Trigger?:     NO
     Rate S/N Ratio:     14.422205101856  [ if not an image trigger ]
     Image S/N Ratio:    10.2

  Flight Position:   [ source = BAT ]
    RA: 136.440024834508   Dec: -30.5064390558512  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 136.442157655978   Dec: -30.5193145759863  [deg; J2000]  
        { 09h 05m 46.1s , -30d 31' 09.5" }
         +/- 1.78255674723266 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.951455401976796 [arcmin] (formal 1-sigma fit error)
    SNR: 13.3194104488996
 
  Angular difference between Flight and Ground position is 0.780358 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 126.287999868393 +/- 11.5302941611068
        Measured from: -54.8400000333786
                   to: 71.4479998350143     [s; relative to TRIGTIME]
     T50: 59.0119999647141 +/- 12.4370828277889
        Measured from: -7.89200007915497
                   to: 51.1199998855591     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 69.7119998931885     
                   to: 70.7119998931885     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -68.6680001020432     
                   to: 81.4759999513626     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.065638   1.282393   0.781974   0.075582
           0.071404   0.072959   0.061242   0.051277 [error]
 Peak      0.032789   0.041085   0.026805   0.001770
           0.006431   0.006411   0.005468   0.004374 [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 3.17e-07 5.00e-07 5.94e-07 1.37e-06 1.82e-06 2.79e-06   erg/cm2
              Error 3.35e-08 3.35e-08 5.97e-08 2.86e-07 1.39e-07 3.40e-07   erg/cm2
Peak flux Power-law 3.29e-01 2.77e-01 1.58e-01 1.35e-01 8.23e-01 8.98e-01   ph/cm2/s
              Error 8.38e-02 4.89e-02 4.24e-02 6.89e-02 1.46e-01 1.62e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.96e-07 5.28e-07 5.99e-07 6.23e-07 1.73e-06 2.04e-06   erg/cm2
              Error 3.87e-08 4.28e-08 6.44e-08 4.80e-07 1.57e-07 5.04e-07   erg/cm2
Peak flux Cutoff-PL 3.00e-01 3.07e-01 1.61e-01 4.89e-02 8.04e-01 8.17e-01   ph/cm2/s
              Error 9.44e-02 6.52e-02 4.96e-02 8.16e-02 1.48e-01 1.33e-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    1.750    0.122    -      -           1.31e-03 9.63e-05   47.400 57
CPL   1.238    0.500      68.7  100.0      2.46e-03 1.64e-03   43.910 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.804    0.307    -      -           5.96e-03 1.24e-03   61.140 57
CPL   0.935    1.336      53.7  -16.7      1.84e-02 6.99e-02   59.520 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: 134.784000 sec.
T50 in the 50-300 keV band: 54.400000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  150.144  -68.668   81.476
T90   126.288  -54.840   71.448
T50    59.012   -7.892   51.120
Peak    1.000   69.712   70.712
  • Click here for the BAT GCN circular template
  • Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte
  • 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
      136.4422   -30.5193   0.0145    15.8259  -155.1310         2.7254480     13.319 TRIG_01252402                 
     
    Foreground time interval of the image:
    -68.668  68.461 (delta_t = 137.129 [sec])
    Background time interval of the image:
    -144.139 -68.668 (delta_t =  75.471 [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 8.192000
    

    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 8.192000
    

    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 8.192000
    

    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  -68.668 sec. to   81.476 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.74982     ( -0.120571   0.12297 )
    Norm@50keV  : 1.30715E-03    ( -9.68157e-05   9.58471e-05 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   47.40     using 59 bins.
     Reduced chi-squared = 0.831579
    # Null hypothesis probability of 8.14e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 150.1 sec: 0.176745 ( -0.011931  0.011943 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.81072e-06 ( -1.38468e-07  1.39985e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from  -68.668 sec. to   81.476 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.23751     ( -0.529047   0.471513 )
    Epeak [keV] : 68.7060      ( -16.046 184.036 )
    Norm@50keV  : 2.45880E-03    ( -0.00106232   0.00221282 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   43.91     using 59 bins.
     Reduced chi-squared = 0.784107
    # Null hypothesis probability of 8.79e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 150.1 sec: 0.172377 ( -0.012565  0.012567 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.72651e-06 ( -1.56181e-07  1.58573e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from  -68.668 sec. to   81.476 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]    : 12.2840  (-1.02913  1.13474)
    R^2/D10^2   : 3.86721E-02  (-0.0107527   0.0147818)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   89.13     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 4.17e-03 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.856e-07   2.244e-08
    25- 50  6.000e-07   5.208e-08
    50-150  5.528e-07   8.353e-08
    15-150  1.338e-06   1.109e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 116.462       (-29.0429      40.5817)
    Norm        : 0.749621       (-0.0633392     0.0803815)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   44.02     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 8.96e-01 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.934e-07   3.047e-08
    25- 50  5.221e-07   4.435e-08
    50-150  9.180e-07   3.183e-07
    15-150  1.734e-06   3.563e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 6.22540        (-1.27766      1.40088)
    R1^2/D10^2  : 0.299503        (-0.148539      0.392085)
    kT2 [keV]   : 21.2019        (-3.7403      5.97574)
    R2^2/D10^2  : 3.95741E-03    (-0.00244523   0.00466682)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   42.72     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 8.86e-01 with 55 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.939e-07   8.839e-08
    25- 50  5.228e-07   1.304e-07
    50-150  8.989e-07   3.823e-07
    15-150  1.716e-06   4.867e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from   69.712 sec. to   70.712 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.80401     ( -0.296355   0.318285 )
    Norm@50keV  : 5.96061E-03    ( -0.00125434   0.00121751 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   61.14     using 59 bins.
     Reduced chi-squared = 1.07263
    # Null hypothesis probability of 3.30e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 1 sec: 0.822682 ( -0.145652  0.145686 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.48744e-08 ( -1.14684e-08  1.17833e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   69.712 sec. to   70.712 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.934903     ( -1.54214   1.13078 )
    Epeak [keV] : 53.6701      ( -20.3264 -53.6702 )
    Norm@50keV  : 1.83861E-02    ( -0.018386   0.121419 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   59.52     using 59 bins.
     Reduced chi-squared = 1.06286
    # Null hypothesis probability of 3.49e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 1 sec: 0.803690 ( -0.147543  0.14775 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.11152e-08 ( -1.19031e-08  1.2717e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   69.712 sec. to   70.712 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]    : 11.2859  (-2.35354  2.96885)
    R^2/D10^2   : 0.254199  (-0.146582   0.348558)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   65.33     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 2.10e-01 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.797e-09   2.483e-09
    25- 50  1.986e-08   5.650e-09
    50-150  1.456e-08   6.444e-09
    15-150  4.122e-08   1.222e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 93.0250       (-40.6639      -93.025)
    Norm        : 3.74700       (-0.821848     1.10552)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   59.75     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 3.76e-01 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  9.785e-09   2.477e-09
    25- 50  1.667e-08   4.140e-09
    50-150  2.590e-08   1.741e-08
    15-150  5.235e-08   2.232e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 6.10627        (-2.74832      3.34906)
    R1^2/D10^2  : 1.53005        (-1.1928      14.2715)
    kT2 [keV]   : 19.2807        (-6.4801      21.0887)
    R2^2/D10^2  : 2.49082E-02    (-0.0244503   0.118262)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   58.77     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 3.39e-01 with 55 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  9.581e-09   5.460e-09
    25- 50  1.685e-08   9.000e-09
    50-150  2.489e-08   1.594e-08
    15-150  5.132e-08   2.726e-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: 1.75388     ( -0.134389   0.137608 )
    Norm@50keV  : 1.19943E-03    ( -0.000100814   9.96168e-05 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   42.54     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 9.23e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 137.1 sec: 0.162416 ( -0.0122537  0.012263 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.51704e-06 ( -1.31443e-07  1.32974e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.22282     ( -0.592381   0.52057 )
    Epeak [keV] : 67.1393      ( -16.4147 379.292 )
    Norm@50keV  : 2.31882E-03    ( -0.00108229   0.00246581 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   39.49     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 9.54e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 137.1 sec: 0.158473 ( -0.012824  0.012823 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.44524e-06 ( -1.46877e-07  1.49617e-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)  = 5.00e-07
    S(50-100 keV) = 5.94e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 126.287999868393 sec.
    Hardness ratio (energy fluence ratio) = 1.188
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.2034
    Count Ratio (50-100 keV) / (15-25 keV) = 0.733808
    

    Mask shadow pattern

    IMX = -2.571756397475418E-01, IMY = 1.192078325277653E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 8.192000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 8.192000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 8.192000
    

    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:
    -144.139410 -68.668000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.5300 -40.5581  241.8   9.6  167.2  -0.0059  -0.0    0.2	Vela X-1                      
    170.3146 -60.6210   45.9  21.8   33.0  -0.0371  -0.3    0.1	Cen X-3                       
    186.4400 -62.6487   16.0  29.3   27.6   0.1170   0.7    9.4	GX 301-2                      
    145.9167 -70.0332    3.1  26.5   64.9   0.6552   3.7 ------	UNKNOWN                       
    135.9465 -60.9675    2.1  18.8   81.4   0.7745   5.5 ------	UNKNOWN                       
    105.0047   1.0702    2.2  58.7 -169.2   4.1061   5.3 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -68.668000 68.460590
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.7292 -40.4807    6.5   9.5  168.0  -0.3577  -1.8   10.2	Vela X-1                      
    170.2278 -60.4744   14.3  21.6   32.8  -0.1949  -0.8    9.3	Cen X-3                       
    186.6476 -62.7983    3.3  29.5   27.8   0.9059   3.5    1.7	GX 301-2                      
    110.0946 -30.5567    2.2  32.4  164.2   1.2682   5.2 ------	UNKNOWN                       
    125.8486 -33.3522    2.3  19.9  176.7   1.0087   5.0 ------	UNKNOWN                       
    158.4624 -45.9435    2.5   7.9   -5.1   0.9344   4.6 ------	UNKNOWN                       
    136.4421 -30.5193    0.9  15.8 -155.1   2.7261  13.3 ------	UNKNOWN                       
    175.7025 -22.4204    2.1  31.2  -60.1   1.7588   5.6 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    149.860580 482.740000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.6624 -40.4448    4.6  41.4 -155.5   0.6962   2.5    9.0	Vela X-1                      
    169.9481 -60.5193    8.8  17.3  167.8  -0.2305  -1.3   12.5	Cen X-3                       
    186.8615 -62.8681    3.0  13.5  139.5   0.6584   3.8    8.1	GX 301-2                      
    244.9378 -15.6316    5.0  53.1   12.7   1.3046   2.3    2.5	Sco X-1                       
    256.0529 -37.7232    9.1  44.7   43.1  -0.5614  -1.3    7.9	4U 1700-377                   
    256.5312 -36.4754    6.1  45.8   42.0   0.9055   1.9    5.6	GX 349+2                      
    245.4811 -12.1677    3.0  56.2   10.6   3.6769   3.8 ------	UNKNOWN                       
    125.6482 -46.4137    2.0  44.4 -168.7   1.4933   5.7 ------	UNKNOWN                       
    177.2395 -24.5627    2.5  28.7  -89.6   1.1918   4.6 ------	UNKNOWN                       
    
    Plot creation:
    Fri Nov 15 20:14:14 EST 2024