batgrbproduct analysis for trigger=1152764

batgrbproduct Analysis for Trigger=1152764

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Wed Jun 14 15:15:18 EDT 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1152764
======================================================================

  Trigger: 01152764      Segment: 000

  BAT Trigger Time: 697285821.888   [s; MET]
      Trigger Stop: 697285824.96   [s; MET]
               UTC: 2023-02-05T10:29:51.184520    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 202.072208101792   Dec: 46.6836265763065  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.58
     Image Trigger?:     NO
     Rate S/N Ratio:     15.1657508881031  [ if not an image trigger ]
     Image S/N Ratio:    6.58

  Flight Position:   [ source = BAT ]
    RA: 202.072208101792   Dec: 46.6836265763065  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 202.057051780186   Dec: 46.6855823698498  [deg; J2000]  
        { 13h 28m 13.7s , +46d 41' 08.1" }
         +/- 2.32910945096139 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.25094237053151 [arcmin] (formal 1-sigma fit error)
    SNR: 9.08994767642737
 
  Angular difference between Flight and Ground position is 0.634788 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 2.29999995231628 +/- 0.355105682948718
        Measured from: 0.455999970436096
                   to: 2.75599992275238     [s; relative to TRIGTIME]
     T50: 1.32799994945526 +/- 0.424867052812541
        Measured from: 0.983999967575073
                   to: 2.31199991703033     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.74399995803833     
                   to: 2.74399995803833     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.315999984741211     
                   to: 2.87199997901917     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.073330   0.094789   0.072597   0.028195
           0.014746   0.015528   0.013945   0.011427 [error]
 Peak      0.046928   0.039507   0.032705   0.007689
           0.009455   0.010307   0.008960   0.007189 [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 2.01e-08 3.83e-08 5.65e-08 1.79e-07 1.60e-07 2.94e-07   erg/cm2
              Error 5.50e-09 6.64e-09 1.31e-08 8.82e-08 3.19e-08 9.92e-08   erg/cm2
Peak flux Power-law 3.71e-01 3.18e-01 1.86e-01 1.62e-01 9.45e-01 1.04e+00   ph/cm2/s
              Error 1.28e-01 7.55e-02 7.13e-02 1.21e-01 2.25e-01 2.58e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.88e-08 4.04e-08 5.80e-08 9.28e-08 1.54e-07 2.10e-07   erg/cm2
              Error 6.53e-09 8.49e-09 1.44e-08 1.38e-07 3.46e-08 1.00e-07   erg/cm2
Peak flux Cutoff-PL 3.70e-01 3.19e-01 1.86e-01 1.56e-01 9.44e-01 1.03e+00   ph/cm2/s
              Error 1.41e-01 8.72e-02 7.73e-02 1.23e-01 2.25e-01 2.74e-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    1.439    0.294    -      -           6.52e-03 1.15e-03   37.790 57
CPL   1.001    1.111     112.8    0.0      1.09e-02 2.85e-02   37.380 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.776    0.453    -      -           6.92e-03 2.03e-03   44.170 57
CPL   1.746    1.797     402.2   -0.0      7.18e-03 2.83e-02   44.170 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    2.556    0.316    2.872
T90     2.300    0.456    2.756
T50     1.328    0.984    2.312
Peak    1.000    1.744    2.744
  • 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
      202.0571    46.6856   0.0213    11.3250   174.1393         0.2508746      9.090 TRIG_01152764                 
     
    Foreground time interval of the image:
      0.316   2.872 (delta_t =   2.556 [sec])
    Background time interval of the image:
    -239.888   0.316 (delta_t = 240.204 [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 3.072000
    

    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 3.072000
    

    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 3.072000
    

    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    0.316 sec. to    2.872 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.43876     ( -0.289614   0.298135 )
    Norm@50keV  : 6.51527E-03    ( -0.00116319   0.00114577 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   37.79     using 59 bins.
     Reduced chi-squared = 0.662982
    # Null hypothesis probability of 9.77e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 2.556 sec: 0.800720 ( -0.135542  0.135599 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.59713e-07 ( -3.16274e-08  3.22514e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.316 sec. to    2.872 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.00091     ( -1.51206   0.71085 )
    Epeak [keV] : 112.848      ( -112.844 -112.844 )
    Norm@50keV  : 1.09426E-02    ( -0.00548681   0.051557 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   37.38     using 59 bins.
     Reduced chi-squared = 0.6675
    # Null hypothesis probability of 9.74e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 2.556 sec: 0.788264 ( -0.140834  0.139664 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.54504e-07 ( -3.43163e-08  3.49178e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.316 sec. to    2.872 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]    : 15.1552  (-2.77986  3.58038)
    R^2/D10^2   : 9.07011E-02  (-0.0471228   0.0911241)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   42.99     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 9.15e-01 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.113e-08   3.397e-09
    25- 50  4.464e-08   1.163e-08
    50-150  7.009e-08   2.507e-08
    15-150  1.259e-07   3.270e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.363       (-91.7665      -199.363)
    Norm        : 3.28102       (-0.553061     0.553053)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   37.85     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 9.76e-01 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.088e-08   1.198e-08
    25- 50  4.017e-08   2.248e-08
    50-150  8.810e-08   5.007e-08
    15-150  1.492e-07   8.390e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 3.47818        (-1.8749      7.54418)
    R1^2/D10^2  : 10.5965        (-10.3974      1605.92)
    kT2 [keV]   : 18.2612        (-4.08235      24.8307)
    R2^2/D10^2  : 4.38203E-02    (-0.042193   0.0643016)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   36.89     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 9.71e-01 with 55 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.944e-08   9.586e-09
    25- 50  3.764e-08   1.768e-08
    50-150  8.454e-08   4.781e-08
    15-150  1.416e-07   6.202e-08
    

    Peak spectrum fit

    Power-law model
    Time interval is from    1.744 sec. to    2.744 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.77574     ( -0.418079   0.487266 )
    Norm@50keV  : 6.92121E-03    ( -0.00210856   0.00195745 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   44.17     using 59 bins.
     Reduced chi-squared = 0.774912
    # Null hypothesis probability of 8.93e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 1 sec: 0.944954 ( -0.224618  0.224616 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 6.37911e-08 ( -1.89372e-08  1.95386e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    1.744 sec. to    2.744 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.74610     ( -1.70918   1.88421 )
    Epeak [keV] : 402.204      ( -404.416 -404.426 )
    Norm@50keV  : 7.18276E-03    ( -0.00718372   0.0493428 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   44.17     using 59 bins.
     Reduced chi-squared = 0.78875
    # Null hypothesis probability of 8.74e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 1 sec: 0.944409 ( -0.226002  0.224611 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.083e-08 ( -2.36637e-08  2.02112e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    1.744 sec. to    2.744 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]    : 13.2814  (-4.36176  5.25891)
    R^2/D10^2   : 0.160381  (-0.109378   0.476533)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   51.07     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 6.96e-01 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.997e-09   3.182e-09
    25- 50  2.113e-08   1.037e-08
    50-150  2.386e-08   1.415e-08
    15-150  5.099e-08   2.732e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 120.177       (-70.7074      -118.957)
    Norm        : 4.03303       (-1.06134     1.62607)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   44.45     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 8.87e-01 with 57 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.050e-08   6.220e-09
    25- 50  1.880e-08   1.088e-08
    50-150  3.357e-08   2.295e-08
    15-150  6.287e-08   4.028e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 3.76911        (-1.82821      3.119)
    R1^2/D10^2  : 13.9873        (-12.9334      666.79)
    kT2 [keV]   : 19.3403        (-6.21612      13.3716)
    R2^2/D10^2  : 3.57968E-02    (-0.0304294   0.0533515)
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   42.75     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 8.85e-01 with 55 degrees of freedom
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.208e-08   6.575e-09
    25- 50  1.561e-08   8.850e-09
    50-150  3.514e-08   2.204e-08
    15-150  6.283e-08   3.505e-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: 1.43876     ( -0.289614   0.298135 )
    Norm@50keV  : 6.51527E-03    ( -0.00116319   0.00114577 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   37.79     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 9.77e-01 with 57 degrees of freedom
     
    Photon flux (15-150 keV)    in 2.556 sec: 0.800703 ( -0.135538  0.135594 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.59692e-07 ( -3.16154e-08  3.22751e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.00088     ( -1.51206   0.710854 )
    Epeak [keV] : 112.845      ( -112.844 -112.844 )
    Norm@50keV  : 1.09428E-02    ( -0.00548681   0.0515571 )
    ------------------------------------------------------------
    #Fit statistic  : Chi-Squared                   37.38     using 59 bins.
     Reduced chi-squared = 
    # Null hypothesis probability of 9.74e-01 with 56 degrees of freedom
     
    Photon flux (15-150 keV)    in 2.556 sec: 0.788184 ( -0.138306  0.139626 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.54566e-07 ( -3.46381e-08  3.49957e-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)  = 3.83e-08
    S(50-100 keV) = 5.65e-08
    

    T90 vs. Hardness ratio plot

    T90                                   = 2.29999995231628 sec.
    Hardness ratio (energy fluence ratio) = 1.4752
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.29264
    Count Ratio (50-100 keV) / (15-25 keV) = 0.990004
    

    Mask shadow pattern

    IMX = -1.992266900346516E-01, IMY = -2.045001260735579E-02
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 3.072000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 3.072000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 3.072000
    

    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:
    -239.888000 0.316000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.3488  35.2554   12.7  39.3  -97.8   1.5491   0.9    7.5	Her X-1                       
    184.3494  88.5749    2.8  53.0 -174.3   7.8484   4.2 ------	UNKNOWN                       
    215.3942  38.9156    2.5   8.5 -109.1   2.0900   4.7 ------	UNKNOWN                       
    249.7256  19.7552    2.7  41.8  -73.3   6.2860   4.3 ------	UNKNOWN                       
    

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

    Time interval of the image:
    0.316000 2.872000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.4918  35.2705    5.7  39.4  -97.9  -0.2484  -2.0    4.6	Her X-1                       
    205.2538 -17.8457    2.5  53.5    6.7   0.4124   4.6 ------	UNKNOWN                       
    202.0570  46.6856    1.3  11.3  174.1   0.2508   9.1 ------	UNKNOWN                       
    234.8250  50.2787    2.2  25.7 -127.4   0.1797   5.2 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    80.412640 962.198600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.4970  35.3706    9.3  40.3  -84.6   6.2911   1.2    2.6	Her X-1                       
    147.9890  36.2684    2.5  41.0  104.0  19.8063   4.7 ------	UNKNOWN                       
    173.7769  60.2035    2.4  21.3  148.2   8.3633   4.8 ------	UNKNOWN                       
    
    Plot creation:
    Fri Jun 16 09:14:41 EDT 2023