batgrbproduct analysis for trigger=1294765

batgrbproduct Analysis for Trigger=1294765

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Thu Jun 19 21:22:02 EDT 2025
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1294765
======================================================================

  Trigger: 01294765      Segment: 000

  BAT Trigger Time: 763478692.864   [s; MET]
      Trigger Stop: 763478694.912   [s; MET]
               UTC: 2025-03-12T13:24:17.633320    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 29.5098301429752   Dec: -42.4044965663019  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.99
     Image Trigger?:     NO
     Rate S/N Ratio:     14.4913767461894  [ if not an image trigger ]
     Image S/N Ratio:    7.99

  Flight Position:   [ source = BAT ]
    RA: 29.5098301429752   Dec: -42.4044965663019  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 29.5152574583294   Dec: -42.3434792030045  [deg; J2000]  
        { 01h 58m 03.7s , -42d 20' 36.5" }
         +/- 2.93238627602947 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.31051201728423 [arcmin] (formal 1-sigma fit error)
    SNR: 6.54123201811011
 
  Angular difference between Flight and Ground position is 3.668937 arcmin
 
  Partial Coding Fraction: 0.6328125    [ including projection effects ]

  Duration
     T90: 222.211999893188 +/- 13.4695562051199
        Measured from: 0.172000050544739
                   to: 222.383999943733     [s; relative to TRIGTIME]
     T50: 181.911999940872 +/- 138.468649210829
        Measured from: 2.73199999332428
                   to: 184.643999934196     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.684000015258789     
                   to: 1.68400001525879     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.916000008583069     
                   to: 231.332000017166     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.852274   1.237559   0.795715  -0.050995
           0.110012   0.118336   0.107040   0.095976 [error]
 Peak      0.020510   0.056347   0.078091   0.032738
           0.009895   0.011440   0.011134   0.009611 [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 3.16e-07 4.76e-07 5.39e-07 1.16e-06 1.68e-06 2.48e-06   erg/cm2
              Error 5.24e-08 5.36e-08 1.03e-07 4.48e-07 2.36e-07 5.52e-07   erg/cm2
Peak flux Power-law 2.62e-01 4.00e-01 4.59e-01 1.01e+00 1.42e+00 2.13e+00   ph/cm2/s
              Error 1.17e-01 1.08e-01 8.39e-02 4.31e-01 2.75e-01 4.38e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.11e-07 4.85e-07 5.39e-07 9.13e-07 1.66e-06 2.25e-06   erg/cm2
              Error 5.71e-08 6.47e-08 1.06e-07 4.92e-07 2.56e-07 5.67e-07   erg/cm2
Peak flux Cutoff-PL 2.71e-01 4.00e-01 4.58e-01 1.05e+00 1.42e+00 2.15e+00   ph/cm2/s
              Error 1.18e-01 1.10e-01 9.62e-02 3.34e-01 2.87e-01 5.93e-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    1.823    0.215    -      -           7.86e-04 1.08e-04   56.900 57
CPL   1.692    0.649     105.6   -0.0      9.28e-04 1.07e-03   56.800 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.802    0.352    -      -           1.24e-02 2.47e-03   50.510 57
CPL   0.794    0.374    9999.3    0.0      1.24e-02 1.42e-02   50.510 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: 6.848000 sec.
T50 in the 50-300 keV band: 2.816000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  232.248   -0.916  231.332
T90   222.212    0.172  222.384
T50   181.912    2.732  184.644
Peak    1.000    0.684    1.684
  • 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
       29.5153   -42.3435   0.0293    37.9761   -14.5892         0.9199883      6.541 TRIG_01294765                 
     
    Foreground time interval of the image:
     -0.916  29.837 (delta_t =  30.753 [sec])
    Background time interval of the image:
    -119.864  -0.916 (delta_t = 118.948 [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 2.048000
    

    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 2.048000
    

    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 2.048000
    

    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   -0.916 sec. to  231.332 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.82255     ( -0.209404   0.221531 )
    Norm@50keV  : 7.85626E-04    ( -0.000109854   0.000106766 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   56.90     using 59 bins.
     Reduced chi-squared = 0.998246
    # Null hypothesis probability of 4.79e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 232.2 sec: 0.109224 ( -0.0122761  0.012278 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.6785e-06 ( -2.33556e-07  2.38938e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.916 sec. to  231.332 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.69231     ( -0.783968   0.513775 )
    Epeak [keV] : 105.605      ( -105.697 -105.712 )
    Norm@50keV  : 9.27914E-04    ( -0.000577673   0.00155418 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   56.80     using 59 bins.
     Reduced chi-squared = 1.01429
    # Null hypothesis probability of 4.45e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 232.2 sec: 0.108657 ( -0.0126232  0.012601 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.65704e-06 ( -2.58281e-07  2.54586e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.916 sec. to  231.332 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]    : 10.7126  (-1.68561  2.09098)
    R^2/D10^2   : 3.85763E-02  (-0.0183857   0.0340142)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   81.93     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 1.69e-02 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.135e-07   4.228e-08
    25- 50  5.834e-07   8.708e-08
    50-150  3.704e-07   1.098e-07
    15-150  1.167e-06   1.961e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 97.9881       (-34.3944      73.8412)
    Norm        : 0.483339       (-0.0710931     0.0904915)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   57.60     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 4.53e-01 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.933e-07   4.528e-08
    25- 50  5.051e-07   7.721e-08
    50-150  8.091e-07   3.706e-07
    15-150  1.607e-06   3.964e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 5.67581        (-1.44685      1.60059)
    R1^2/D10^2  : 0.301522        (-0.181737      0.678858)
    kT2 [keV]   : 23.0520        (-5.87938      10.4201)
    R2^2/D10^2  : 1.82598E-03    (-0.0013286   0.00241569)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   55.31     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 4.63e-01 with 55 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.163e-07   1.554e-07
    25- 50  4.644e-07   1.911e-07
    50-150  8.970e-07   5.033e-07
    15-150  1.678e-06   7.308e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    0.684 sec. to    1.684 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.802057     ( -0.368981   0.335983 )
    Norm@50keV  : 1.23577E-02    ( -0.00251845   0.00241834 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   50.51     using 59 bins.
     Reduced chi-squared = 0.88614
    # Null hypothesis probability of 7.16e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 1 sec: 1.42018 ( -0.27398  0.27606 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.44301e-07 ( -2.71462e-08  2.72013e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.684 sec. to    1.684 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.793521     ( -0.408295   0.338828 )
    Epeak [keV] : 9999.29      ( -9999.36 -9999.36 )
    Norm@50keV  : 1.24314E-02    ( -0.00233367   0.025985 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   50.51     using 59 bins.
     Reduced chi-squared = 0.901964
    # Null hypothesis probability of 6.82e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 1 sec: 1.42493 ( -0.29329  0.28016 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.44261e-07 ( -2.58287e-08  2.72176e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.684 sec. to    1.684 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]    : 29.7116  (-6.82564  11.2824)
    R^2/D10^2   : 2.15847E-02  (-0.0127959   0.0256054)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   54.99     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 5.51e-01 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.999e-09   1.352e-09
    25- 50  1.842e-08   7.035e-09
    50-150  1.153e-07   4.453e-08
    15-150  1.367e-07   4.720e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (-44.4095      -200)
    Norm        : 5.81893       (-1.14274     1.14274)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   64.70     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 2.26e-01 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.450e-08   8.670e-09
    25- 50  2.789e-08   1.623e-08
    50-150  6.117e-08   3.578e-08
    15-150  1.036e-07   6.030e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 5.99976        (-5.22718      6.04393)
    R1^2/D10^2  : 1.66576        (-1.53445      -1.66515)
    kT2 [keV]   : 37.9770        (-12.2566      33.5922)
    R2^2/D10^2  : 1.00475E-02    (-0.00796157   0.0257837)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   49.05     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 7.00e-01 with 55 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  9.907e-09   5.860e-09
    25- 50  2.097e-08   1.153e-08
    50-150  1.173e-07   6.685e-08
    15-150  1.482e-07   7.885e-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: 1.22435     ( -0.248467   0.244517 )
    Norm@50keV  : 2.54934E-03    ( -0.000382499   0.000382497 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   37.51     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 9.78e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 30.75 sec: 0.300308 ( -0.0463677  0.0465193 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.89955e-07 ( -1.28716e-07  1.29926e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 6.78751E-02     ( -1.41712   1.07198 )
    Epeak [keV] : 90.3670      ( -24.7793 334.831 )
    Norm@50keV  : 8.90340E-03    ( -0.0089034   0.0291849 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   34.08     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 9.91e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 30.75 sec: 0.287551 ( -0.047573  0.04812 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.44667e-07 ( -1.36838e-07  1.38553e-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)  = 4.76e-07
    S(50-100 keV) = 5.39e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 222.211999893188 sec.
    Hardness ratio (energy fluence ratio) = 1.13235
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.45207
    Count Ratio (50-100 keV) / (15-25 keV) = 0.933638
    

    Mask shadow pattern

    IMX = 7.554453377773364E-01, IMY = 1.966264557379882E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 2.048000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 2.048000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 2.048000
    

    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:
    -119.864000 -0.916000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    264.6692 -44.6081    4.9  45.9  133.8   5.1617   2.3   10.0	4U 1735-44                    
    270.4088 -25.7098    8.4  54.2  156.9   2.7407   1.4    6.1	GRS 1758-258                  
    275.8902 -30.3623    5.5  47.4  156.8   3.2419   2.1    1.8	H1820-303                     
    285.1214 -24.9624    6.0  45.3  170.0  -2.2622  -1.9    5.3	HT1900.1-2455                 
    280.7367 -28.3496    3.2  45.7  162.8   4.8355   3.6 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -0.916000 29.836600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    264.7163 -44.5951    4.1  45.9  133.8  -1.2877  -2.9    8.8	4U 1735-44                    
    270.3724 -25.6496    7.9  54.2  156.9  -0.8928  -1.5    6.8	GRS 1758-258                  
    275.8673 -30.5671   14.0  47.3  156.6  -0.2843  -0.8   12.4	H1820-303                     
    285.1909 -24.9523    5.8  45.3  170.1   0.4646   2.0    8.6	HT1900.1-2455                 
      1.4154 -78.8956    2.1  30.4   55.4   0.8361   5.6 ------	UNKNOWN                       
     58.6218 -39.4475    1.7  57.5   -0.4   4.0012   6.9 ------	UNKNOWN                       
     29.5153 -42.3435    1.8  38.0  -14.6   0.9196   6.5 ------	UNKNOWN                       
    347.1655 -26.7116    2.3  25.2  -87.4   0.6846   5.1 ------	UNKNOWN                       
     31.3879 -26.0142    2.0  49.4  -31.9   1.4994   5.8 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    123.036600 962.304800
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     55.4590 -57.8803    3.4  22.5  102.7   5.3601   3.4 ------	UNKNOWN                       
    313.7154 -73.5062    3.2  45.7  162.8  12.1491   3.6 ------	UNKNOWN                       
     59.8069 -10.9916    2.9  41.0    9.2   6.9643   4.0 ------	UNKNOWN                       
    305.2132 -59.2052    2.9  51.9 -179.5  13.4765   4.0 ------	UNKNOWN                       
    357.8685 -57.7075    3.3  25.1 -178.4   4.1151   3.5 ------	UNKNOWN                       
    
    Plot creation:
    Fri Jun 20 01:48:31 EDT 2025