batgrbproduct analysis for trigger=754549

batgrbproduct Analysis for Trigger=754549

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Jun 21 15:49:43 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger754549
======================================================================

  Trigger: 00754549      Segment: 000

  BAT Trigger Time: 517498528.064   [s; MET]
      Trigger Stop: 517498533.568   [s; MET]
               UTC: 2017-05-26T13:35:08.944680    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 4.7079606442867   Dec: 1.23959674361896  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.86
     Image Trigger?:     NO
     Rate S/N Ratio:     8.88819441731559  [ if not an image trigger ]
     Image S/N Ratio:    6.86

  Flight Position:   [ source = BAT ]
    RA: 4.7079606442867   Dec: 1.23959674361896  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 4.72206259301582   Dec: 1.26388451149915  [deg; J2000]  
        { 00h 18m 53.3s , +01d 15' 50.0" }
         +/- 2.28072571444758 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.20631337243499 [arcmin] (formal 1-sigma fit error)
    SNR: 9.36667471572096
 
  Angular difference between Flight and Ground position is 1.684992 arcmin
 
  Partial Coding Fraction: 0.9453125    [ including projection effects ]

  Duration
     T90: 8.31199997663498 +/- 2.44560012871808
        Measured from: 0.163999974727631
                   to: 8.47599995136261     [s; relative to TRIGTIME]
     T50: 3.77199989557266 +/- 1.805454017922
        Measured from: 1.77200001478195
                   to: 5.54399991035461     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.53200000524521     
                   to: 2.53200000524521     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0720000267028809     
                   to: 8.71599996089935     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.085131   0.071122   0.087485   0.017796
           0.016827   0.017383   0.015037   0.012617 [error]
 Peak      0.021345   0.008570   0.020577   0.004346
           0.005770   0.006147   0.005220   0.004244 [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 1.56e-08 3.63e-08 6.69e-08 2.95e-07 1.82e-07 4.14e-07   erg/cm2
              Error 6.61e-09 8.59e-09 1.49e-08 1.72e-07 3.78e-08 1.77e-07   erg/cm2
Peak flux Power-law 1.41e-01 1.37e-01 9.38e-02 1.00e-01 4.12e-01 4.73e-01   ph/cm2/s
              Error 1.14e-01 4.77e-02 4.67e-02 1.10e-01 1.37e-01 1.65e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.56e-08 3.65e-08 6.68e-08 3.05e-07 1.81e-07 4.00e-07   erg/cm2
              Error -------- 8.96e-09 1.49e-08 2.19e-07 3.78e-08 1.87e-07   erg/cm2
Peak flux Cutoff-PL 1.30e-01 1.01e-01 5.46e-02 5.12e-02 3.05e-01 3.36e-01   ph/cm2/s
              Error 1.10e-01 7.56e-02 3.80e-02 3.86e-02 2.26e-01 2.39e-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    1.118    0.397    -      -           1.99e-03 3.72e-04   62.240 57
CPL   1.116    0.402    10000.0    0.0      2.00e-03 -8.14e-04   62.270 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.552    0.730    -      -           3.26e-03 1.24e-03   73.690 57
CPL   2.238    1.544      87.3    0.0      1.45e-03 0.00e+00   73.020 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    8.788   -0.072    8.716
T90     8.312    0.164    8.476
T50     3.772    1.772    5.544
Peak    1.000    1.532    2.532
  • 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
        4.7221     1.2639   0.0204    18.2118   158.3171         0.2992216      9.367 TRIG_00754549                 
     
    Foreground time interval of the image:
     -0.072   8.716 (delta_t =   8.788 [sec])
    Background time interval of the image:
    -277.163 -259.056 (delta_t =  18.107 [sec])
    -239.064  -0.072 (delta_t = 238.992 [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 5.504000
    

    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 5.504000
    

    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 5.504000
    

    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   -0.072 sec. to    8.716 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.11795     ( -0.408326   0.385241 )
    Norm@50keV  : 1.98798E-03    ( -0.000373191   0.000370257 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.24 using 59 PHA bins.
    # Reduced chi-squared =          1.092 for     57 degrees of freedom 
    # Null hypothesis probability =   2.951490e-01
     
    Photon flux (15-150 keV)    in 8.788 sec: 0.231007 ( -0.045264  0.045361 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.81648e-07 ( -3.77217e-08  3.79509e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.072 sec. to    8.716 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.11557     ( -0.445559   0.357498 )
    Epeak [keV] : 1.00000E+04      ( -10000 -10000 )
    Norm@50keV  : 1.99848E-03    ( -0.000370089   -0.00199847 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.27 using 59 PHA bins.
    # Reduced chi-squared =          1.112 for     56 degrees of freedom 
    # Null hypothesis probability =   2.631191e-01
     
    Photon flux (15-150 keV)    in 8.788 sec: 0.231079 ( -0.045398  0.045233 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.81355e-07 ( -3.75285e-08  3.80969e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.072 sec. to    8.716 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]    : 26.9579  (-7.53406  13.4676)
    R^2/D10^2   : 4.08113E-03  (-0.00270926   0.00697197)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          74.21 using 59 PHA bins.
    # Reduced chi-squared =          1.302 for     57 degrees of freedom 
    # Null hypothesis probability =   6.251065e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.344e-09   2.151e-09
    25- 50  2.557e-08   1.039e-08
    50-150  1.358e-07   5.673e-08
    15-150  1.657e-07   6.736e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (-64.6091      -200)
    Norm        : 0.956366       (-0.183246     0.183246)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          67.56 using 59 PHA bins.
    # Reduced chi-squared =          1.185 for     57 degrees of freedom 
    # Null hypothesis probability =   1.597554e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.094e-08   1.218e-08
    25- 50  4.028e-08   2.309e-08
    50-150  8.834e-08   5.097e-08
    15-150  1.496e-07   8.612e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 4.51800        (-1.77828      1.9358)
    R1^2/D10^2  : 1.49439        (-1.29249      17.8811)
    kT2 [keV]   : 40.1282        (-13.6652      49.145)
    R2^2/D10^2  : 1.23577E-03    (-0.00102534   0.00146816)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          57.63 using 59 PHA bins.
    # Reduced chi-squared =          1.048 for     55 degrees of freedom 
    # Null hypothesis probability =   3.783257e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.316e-08   1.392e-08
    25- 50  2.591e-08   1.286e-08
    50-150  1.478e-07   8.291e-08
    15-150  1.968e-07   9.883e-08
    

    Peak spectrum fit

    Power-law model
    Time interval is from    1.532 sec. to    2.532 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.55170     ( -0.678913   0.781783 )
    Norm@50keV  : 3.25643E-03    ( -0.00132059   0.00115707 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          73.69 using 59 PHA bins.
    # Reduced chi-squared =          1.293 for     57 degrees of freedom 
    # Null hypothesis probability =   6.761998e-02
     
    Photon flux (15-150 keV)    in 1 sec: 0.412464 ( -0.136939  0.136811 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.06507e-08 ( -1.25536e-08  1.28203e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    1.532 sec. to    2.532 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.23821     ( -1.82496   1.2632 )
    Epeak [keV] : 87.3210      (   )
    Norm@50keV  : 1.45389E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          73.02 using 59 PHA bins.
    # Reduced chi-squared =          1.304 for     56 degrees of freedom 
    # Null hypothesis probability =   6.290808e-02
     
    Photon flux (15-150 keV)    in 1 sec: 0.305212 ( -0.305212  0.14707 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.01398e-08 ( 0  0 ) ergs/cm2
     
    
    Band function
    Time interval is from    1.532 sec. to    2.532 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]    : 22.9604  (-9.91343  17.3194)
    R^2/D10^2   : 1.09190E-02  (-0.0109337   0.0568876)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          78.99 using 59 PHA bins.
    # Reduced chi-squared =          1.386 for     57 degrees of freedom 
    # Null hypothesis probability =   2.857030e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.730e-09   3.727e-09
    25- 50  5.114e-09   3.587e-09
    50-150  3.797e-10   4.157e-10
    15-150  1.122e-08   7.430e-09
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.361       (-199.363      -199.363)
    Norm        : 1.66445       (-0.555175     0.555655)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          74.27 using 59 PHA bins.
    # Reduced chi-squared =          1.303 for     57 degrees of freedom 
    # Null hypothesis probability =   6.190924e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.145e-09   2.534e-09
    25- 50  7.973e-09   4.932e-09
    50-150  1.749e-08   1.141e-08
    15-150  2.960e-08   1.850e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 3.97285        (-1.74704      2.60893)
    R1^2/D10^2  : 5.82407        (-5.29358      25.1445)
    kT2 [keV]   : 31.1530        (-12.1817      45.6138)
    R2^2/D10^2  : 3.75275E-03    (-0.00337369   0.00910318)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          69.97 using 59 PHA bins.
    # Reduced chi-squared =          1.272 for     55 degrees of freedom 
    # Null hypothesis probability =   8.412530e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.681e-09   3.451e-09
    25- 50  5.300e-09   2.887e-09
    50-150  2.355e-08   1.424e-08
    15-150  3.453e-08   1.876e-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: 1.11795     ( -0.408326   0.385241 )
    Norm@50keV  : 1.98798E-03    ( -0.000373191   0.000370257 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.24 using 59 PHA bins.
    # Reduced chi-squared =          1.092 for     57 degrees of freedom 
    # Null hypothesis probability =   2.951490e-01
     
    Photon flux (15-150 keV)    in 8.788 sec: 0.231011 ( -0.0452667  0.0453547 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.81628e-07 ( -3.77134e-08  3.79692e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.11554     ( -0.445625   0.358378 )
    Epeak [keV] : 1.00000E+04      ( -10000 -10000 )
    Norm@50keV  : 1.99847E-03    ( -0.000370089   -0.00199847 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.27 using 59 PHA bins.
    # Reduced chi-squared =          1.112 for     56 degrees of freedom 
    # Null hypothesis probability =   2.631191e-01
     
    Photon flux (15-150 keV)    in 8.788 sec: 0.233135 ( -0.048063  0.043667 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.81e-07 ( -3.62039e-08  3.59983e-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)  = 3.63e-08
    S(50-100 keV) = 6.69e-08
    

    T90 vs. Hardness ratio plot

    T90                                   = 8.31199997663498 sec.
    Hardness ratio (energy fluence ratio) = 1.84298
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 0.835442
    Count Ratio (50-100 keV) / (15-25 keV) = 1.02765
    

    Mask shadow pattern

    IMX = -3.057317270385411E-01, IMY = -1.215600449943498E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 5.504000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 5.504000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 5.504000
    

    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:
    -277.163400 -259.056300
    -239.064000 -0.072000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     25.0810 -46.5115    2.4  40.2   39.8   2.0787   4.9 ------	UNKNOWN                       
     54.3741   3.2196    2.9  34.5  -61.5   1.3960   3.9 ------	UNKNOWN                       
     14.2269  46.3874    2.5  53.2 -142.2   5.1190   4.6 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -0.072000 8.716000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     23.1889 -55.1164    1.7  48.7   42.4   1.0306   6.9 ------	UNKNOWN                       
     65.3402 -46.0765    2.5  54.8    7.7   0.6213   4.6 ------	UNKNOWN                       
      4.7220   1.2639    1.2  18.2  158.3   0.2992   9.4  293.3	UNKNOWN                       
      2.9551  33.5832    2.2  43.6 -158.4   0.2999   5.4 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    107.436590 495.436590
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    326.1119  38.2641   10.8  51.2  165.0   1.1068   1.1    4.5	Cyg X-2                       
    333.2171 -24.9891    2.2  40.2   71.2   5.7406   5.2 ------	UNKNOWN                       
    341.9700 -40.3856    3.8  46.5   47.9   3.8518   3.1 ------	UNKNOWN                       
      6.4733 -46.8274    3.1  48.1   22.4   2.8331   3.7 ------	UNKNOWN                       
     12.8568 -21.4299    2.9  24.0    5.1   1.0949   3.9 ------	UNKNOWN                       
     40.0580  13.7204    2.9  37.1  -87.4   3.5061   4.0 ------	UNKNOWN                       
    
    Plot creation:
    Thu Jun 22 11:37:39 EDT 2017