batgrbproduct analysis for trigger=732526

batgrbproduct Analysis for Trigger=732526

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Feb 13 11:04:54 EST 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger732526
======================================================================

  Trigger: 00732526      Segment: 000

  BAT Trigger Time: 505994663.936   [s; MET]
      Trigger Stop: 505994664.96   [s; MET]
               UTC: 2017-01-13T10:04:05.482200    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 61.6485165726425   Dec: -71.9246030205622  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.08
     Image Trigger?:     NO
     Rate S/N Ratio:     13.228756555323  [ if not an image trigger ]
     Image S/N Ratio:    8.08

  Flight Position:   [ source = BAT ]
    RA: 61.6485165726425   Dec: -71.9246030205622  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 61.7491467807614   Dec: -71.9361164423602  [deg; J2000]  
        { 04h 06m 59.8s , -71d 56' 10.0" }
         +/- 1.32058810340737 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.45460744495699 [arcmin] (formal 1-sigma fit error)
    SNR: 20.4453029707989
 
  Angular difference between Flight and Ground position is 1.996111 arcmin
 
  Partial Coding Fraction: 0.8671875    [ including projection effects ]

  Duration
     T90: 20.2959999442101 +/- 4.33263519239863
        Measured from: 0.259999990463257
                   to: 20.5559999346733     [s; relative to TRIGTIME]
     T50: 10.5759999752045 +/- 0.873109423105914
        Measured from: 2.18000000715256
                   to: 12.755999982357     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.63200002908707     
                   to: 2.63200002908707     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.607999980449677     
                   to: 22.9319999814034     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.331638   0.478106   0.326846   0.066324
           0.027455   0.028714   0.025303   0.022037 [error]
 Peak      0.033271   0.052839   0.044632   0.009014
           0.005955   0.006384   0.005819   0.004713 [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 1.04e-07 1.83e-07 2.47e-07 6.80e-07 7.16e-07 1.21e-06   erg/cm2
              Error 1.19e-08 1.31e-08 2.44e-08 1.42e-07 5.81e-08 1.62e-07   erg/cm2
Peak flux Power-law 3.00e-01 3.45e-01 2.85e-01 3.95e-01 1.07e+00 1.33e+00   ph/cm2/s
              Error 7.01e-02 4.99e-02 4.56e-02 1.31e-01 1.42e-01 1.86e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.20e-08 1.99e-07 2.52e-07 2.15e-07 6.64e-07 7.58e-07   erg/cm2
              Error 1.42e-08 1.71e-08 2.73e-08 1.64e-07 6.65e-08 1.75e-07   erg/cm2
Peak flux Cutoff-PL 2.80e-01 3.59e-01 2.95e-01 2.46e-01 1.06e+00 1.18e+00   ph/cm2/s
              Error 8.04e-02 4.47e-02 5.11e-02 1.71e-01 1.46e-01 2.36e-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    1.573    0.124    -      -           3.24e-03 2.40e-04   75.750 57
CPL   0.741    0.591      71.8   31.1      8.81e-03 7.03e-03   68.660 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.276    0.224    -      -           9.04e-03 1.19e-03   53.960 57
CPL   0.877    0.730     141.7    0.0      1.44e-02 1.70e-02   53.230 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: 12.992000 sec.
T50 in the 50-300 keV band: 7.616000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   23.540   -0.608   22.932
T90    20.296    0.260   20.556
T50    10.576    2.180   12.756
Peak    1.000    1.632    2.632
  • 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
       61.7491   -71.9361   0.0094    14.5526   109.1566         0.8368551     20.445 TRIG_00732526                 
     
    Foreground time interval of the image:
     -0.608  12.365 (delta_t =  12.973 [sec])
    Background time interval of the image:
    -617.735 -598.699 (delta_t =  19.036 [sec])
    -239.936  -0.608 (delta_t = 239.328 [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 1.024000
    

    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 1.024000
    

    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 1.024000
    

    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   -0.608 sec. to   22.932 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.57293     ( -0.123133   0.124996 )
    Norm@50keV  : 3.24103E-03    ( -0.000240956   0.000239348 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          75.75 using 59 PHA bins.
    # Reduced chi-squared =          1.329 for     57 degrees of freedom 
    # Null hypothesis probability =   4.898541e-02
     
    Photon flux (15-150 keV)    in 23.54 sec: 0.413084 ( -0.029125  0.029148 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.16073e-07 ( -5.77688e-08  5.84364e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.608 sec. to   22.932 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.740936     ( -0.632466   0.549575 )
    Epeak [keV] : 71.8058      ( -13.8714 48.3201 )
    Norm@50keV  : 8.81318E-03    ( -0.00419825   0.00985906 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          68.66 using 59 PHA bins.
    # Reduced chi-squared =          1.226 for     56 degrees of freedom 
    # Null hypothesis probability =   1.193269e-01
     
    Photon flux (15-150 keV)    in 23.54 sec: 0.396412 ( -0.031022  0.031012 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 6.63463e-07 ( -6.57588e-08  6.71483e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.608 sec. to   22.932 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]    : 13.6012  (-1.09242  1.20774)
    R^2/D10^2   : 6.57336E-02  (-0.0172672   0.0230105)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          92.73 using 59 PHA bins.
    # Reduced chi-squared =          1.627 for     57 degrees of freedom 
    # Null hypothesis probability =   1.945437e-03
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.061e-08   7.839e-09
    25- 50  2.189e-07   1.709e-08
    50-150  2.626e-07   4.095e-08
    15-150  5.421e-07   4.590e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 172.689       (-51.59      -172.656)
    Norm        : 1.69589       (-0.125737     0.138594)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          71.11 using 59 PHA bins.
    # Reduced chi-squared =          1.248 for     57 degrees of freedom 
    # Null hypothesis probability =   9.902259e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.011e-07   1.254e-08
    25- 50  1.911e-07   4.826e-08
    50-150  3.987e-07   1.842e-07
    15-150  6.909e-07   2.307e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 7.05138        (-2.55262      2.79397)
    R1^2/D10^2  : 0.359575        (-0.214072      1.25292)
    kT2 [keV]   : 20.9700        (-4.66225      13.5869)
    R2^2/D10^2  : 1.05705E-02    (-0.00904124   0.0195686)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          69.94 using 59 PHA bins.
    # Reduced chi-squared =          1.272 for     55 degrees of freedom 
    # Null hypothesis probability =   8.460934e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  8.881e-08   3.576e-08
    25- 50  2.009e-07   8.051e-08
    50-150  3.642e-07   1.798e-07
    15-150  6.539e-07   2.185e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    1.632 sec. to    2.632 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.27602     ( -0.224978   0.223172 )
    Norm@50keV  : 9.03707E-03    ( -0.00119414   0.0011913 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.96 using 59 PHA bins.
    # Reduced chi-squared =         0.9467 for     57 degrees of freedom 
    # Null hypothesis probability =   5.897724e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.07354 ( -0.142008  0.14214 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 8.98463e-08 ( -1.33994e-08  1.35869e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    1.632 sec. to    2.632 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.877058     ( -0.944472   0.516212 )
    Epeak [keV] : 141.697      ( -141.696 -141.696 )
    Norm@50keV  : 1.43887E-02    ( -0.00634139   0.0277014 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.23 using 59 PHA bins.
    # Reduced chi-squared =         0.9506 for     56 degrees of freedom 
    # Null hypothesis probability =   5.803140e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.05740 ( -0.145906  0.1457 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 8.69441e-08 ( -1.48749e-08  1.47533e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    1.632 sec. to    2.632 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]    : 16.5036  (-2.89448  3.69814)
    R^2/D10^2   : 9.11705E-02  (-0.0446119   0.0840391)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.21 using 59 PHA bins.
    # Reduced chi-squared =          1.144 for     57 degrees of freedom 
    # Null hypothesis probability =   2.129216e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.097e-09   1.336e-09
    25- 50  2.201e-08   4.965e-09
    50-150  4.239e-08   1.134e-08
    15-150  6.950e-08   1.428e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (-51.1516      -200)
    Norm        : 4.40315       (-0.581472     0.581472)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          57.07 using 59 PHA bins.
    # Reduced chi-squared =          1.001 for     57 degrees of freedom 
    # Null hypothesis probability =   4.722970e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.097e-08   6.230e-09
    25- 50  2.110e-08   1.159e-08
    50-150  4.627e-08   2.577e-08
    15-150  7.833e-08   4.329e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 7.88500        (-2.37267      3.25995)
    R1^2/D10^2  : 0.693845        (-0.457058      1.53783)
    kT2 [keV]   : 31.4027        (-9.93001      38.0287)
    R2^2/D10^2  : 8.63758E-03    (-0.00774835   0.0233414)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          51.16 using 59 PHA bins.
    # Reduced chi-squared =         0.9301 for     55 degrees of freedom 
    # Null hypothesis probability =   6.222677e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  9.011e-09   5.087e-09
    25- 50  2.130e-08   1.116e-08
    50-150  5.889e-08   3.341e-08
    15-150  8.921e-08   4.644e-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: 1.55869     ( -0.125649   0.127653 )
    Norm@50keV  : 4.29249E-03    ( -0.000330244   0.000328019 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.85 using 59 PHA bins.
    # Reduced chi-squared =          1.085 for     57 degrees of freedom 
    # Null hypothesis probability =   3.072618e-01
     
    Photon flux (15-150 keV)    in 12.97 sec: 0.544783 ( -0.0396897  0.0397112 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.2348e-07 ( -4.38649e-08  4.43381e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.615778     ( -0.663901   0.573666 )
    Epeak [keV] : 69.4436      ( -12.5268 36.5052 )
    Norm@50keV  : 1.33800E-02    ( -0.00658688   0.0161594 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.33 using 59 PHA bins.
    # Reduced chi-squared =         0.9523 for     56 degrees of freedom 
    # Null hypothesis probability =   5.766852e-01
     
    Photon flux (15-150 keV)    in 12.97 sec: 0.521057 ( -0.042023  0.042035 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.81039e-07 ( -4.94624e-08  5.06634e-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)  = 1.83e-07
    S(50-100 keV) = 2.47e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 20.2959999442101 sec.
    Hardness ratio (energy fluence ratio) = 1.34973
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.44165
    Count Ratio (50-100 keV) / (15-25 keV) = 0.985551
    

    Mask shadow pattern

    IMX = -8.518722869117754E-02, IMY = -2.452227769607561E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    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:
    -617.735390 -598.698900
    -239.936000 -0.608000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    170.4875 -60.5651    2.7  46.2  162.2   2.2830   4.2    6.1	Cen X-3                       
    186.6418 -62.7809   87.2  44.8  173.2   0.0576   0.1    0.8	GX 301-2                      
    106.3770 -53.1876    2.3  41.2  112.1   4.3684   4.9 ------	UNKNOWN                       
     69.8743 -41.9374    3.5  40.5   70.8   2.8973   3.3 ------	UNKNOWN                       
     33.1253 -19.4156    3.8  54.2   21.0   3.2990   3.0 ------	UNKNOWN                       
     26.6529 -20.4134    2.5  52.5   13.5   3.4420   4.7 ------	UNKNOWN                       
    302.7793 -51.1457    3.0  36.2  -95.9   1.9725   3.8 ------	UNKNOWN                       
    263.0323 -50.4592    2.9  48.0 -129.0   3.9720   4.0 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -0.608000 12.364610
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    170.6974 -60.5401    0.0  46.2  162.4  -0.0623  -0.6   12.3	Cen X-3                       
    186.7757 -62.8715    8.6  44.7  173.3   0.1068   1.3    6.9	GX 301-2                      
     61.7491 -71.9361    0.6  14.6  109.2   0.8368  20.4 ------	UNKNOWN                       
    177.9912 -74.3639    2.4  33.0  170.0   0.2443   4.8 ------	UNKNOWN                       
    215.5980 -54.0722    2.1  52.6 -166.2   0.6782   5.6 ------	UNKNOWN                       
    220.8575 -54.0661    2.5  52.1 -162.3   0.5558   4.7 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    48.164600 104.243500
    105.064000 962.134000
    1878.064000 2000.000000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    170.3550 -60.6595    2.3  38.8  172.7   4.8188   5.0    2.5	Cen X-3                       
    186.7360 -62.9416   11.1  40.1 -174.8   0.9010   1.0   10.5	GX 301-2                      
     60.3657 -58.2029    3.8  13.7   37.8   1.7103   3.1 ------	UNKNOWN                       
    201.7047 -46.9527    2.6  57.8 -170.6  17.9299   4.4 ------	UNKNOWN                       
    269.3655 -61.3432    3.6  45.4 -121.2   9.4306   3.2 ------	UNKNOWN                       
    
    Plot creation:
    Mon Feb 13 11:18:16 EST 2017