batgrbproduct Analysis for Trigger=217805

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Jan 22 15:14:31 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger217805
======================================================================

  Trigger: 00217805      Segment: 000

  BAT Trigger Time: 174053760.32   [s; MET]
      Trigger Stop: 174053760.832   [s; MET]
               UTC: 2006-07-08T12:15:59.016080    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 7.79827043596902   Dec: -33.7296918247416  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.22
     Image Trigger?:     NO
     Rate S/N Ratio:     18.1383571472171  [ if not an image trigger ]
     Image S/N Ratio:    8.22

  Flight Position:   [ source = BAT ]
    RA: 7.79827043596902   Dec: -33.7296918247416  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 7.82161075809609   Dec: -33.7481150416323  [deg; J2000]  
        { 00h 31m 17.2s , -33d 44' 53.2" }
         +/- 1.00848487799393 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.338829369407037 [arcmin] (formal 1-sigma fit error)
    SNR: 30.0522085242426
 
  Angular difference between Flight and Ground position is 1.605642 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 10.027999997139 +/- 3.67214813462298
        Measured from: 0.15200001001358
                   to: 10.1800000071526     [s; relative to TRIGTIME]
     T50: 3.27200001478195 +/- 0.551144267679184
        Measured from: 1.34000000357628
                   to: 4.61200001835823     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.12000000476837     
                   to: 2.12000000476837     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.259999990463257     
                   to: 14.1759999990463     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.264268   0.326090   0.225649   0.047052
           0.017672   0.018340   0.016054   0.013494 [error]
 Peak      0.050126   0.098873   0.073393   0.020221
           0.005198   0.005891   0.005180   0.003898 [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 7.80e-08 1.32e-07 1.69e-07 4.35e-07 4.99e-07 8.14e-07   erg/cm2
              Error 8.28e-09 8.65e-09 1.58e-08 8.58e-08 3.72e-08 9.92e-08   erg/cm2
Peak flux Power-law 5.57e-01 6.20e-01 4.93e-01 6.49e-01 1.91e+00 2.32e+00   ph/cm2/s
              Error 6.97e-02 4.80e-02 4.18e-02 1.13e-01 1.36e-01 1.69e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.32e-08 1.38e-07 1.72e-07 2.29e-07 4.81e-07 6.11e-07   erg/cm2
              Error 9.72e-09 1.07e-08 1.69e-08 1.54e-07 4.17e-08 1.61e-07   erg/cm2
Peak flux Cutoff-PL 5.09e-01 6.49e-01 5.16e-01 3.82e-01 1.88e+00 2.05e+00   ph/cm2/s
              Error 8.27e-02 5.70e-02 4.83e-02 2.04e-01 1.40e-01 2.44e-01   ph/cm2/s
 
Fluence        Band 7.25e-08 1.37e-07 1.71e-07 2.31e-07 4.80e-07 6.13e-07   erg/cm2
              Error 9.40e-09 -------- -------- -------- -------- --------   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    1.641    0.117    -      -           3.71e-03 2.57e-04   60.900 57
CPL   1.220    0.469      88.9  -31.6      6.14e-03 3.65e-03   58.290 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.331    0.118    -      -           1.59e-02 1.12e-03   59.820 57
CPL   0.845    0.498     121.9  569.5      2.78e-02 1.68e-02   56.680 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: 7.680000 sec.
T50 in the 50-300 keV band: 2.368000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   14.436   -0.260   14.176
T90    10.028    0.152   10.180
T50     3.272    1.340    4.612
Peak    1.000    1.120    2.120
  • Click here for the BAT GCN circular template
  • 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
        7.8216   -33.7481   0.0064    18.5157   -12.0979         0.8527661     30.052 TRIG_00217805                 
     
    Foreground time interval of the image:
     -0.260  10.181 (delta_t =  10.441 [sec])
    Background time interval of the image:
    -239.320  -0.260 (delta_t = 239.060 [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 0.512000
    

    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 0.512000
    

    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 0.512000
    

    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   -0.260 sec. to   14.176 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.64057     ( -0.116532   0.118324 )
    Norm@50keV  : 3.70845E-03    ( -0.000257961   0.000255974 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.90 using 59 PHA bins.
    # Reduced chi-squared =          1.068 for     57 degrees of freedom 
    # Null hypothesis probability =   3.373225e-01
     
    Photon flux (15-150 keV)    in 14.44 sec: 0.482738 ( -0.0316276  0.0316572 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.98515e-07 ( -3.70442e-08  3.7384e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.260 sec. to   14.176 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.21956     ( -0.495065   0.441972 )
    Epeak [keV] : 88.9475      ( -25.8019 -88.9475 )
    Norm@50keV  : 6.14165E-03    ( -0.00247883   0.00482136 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.29 using 59 PHA bins.
    # Reduced chi-squared =          1.041 for     56 degrees of freedom 
    # Null hypothesis probability =   3.910468e-01
     
    Photon flux (15-150 keV)    in 14.44 sec: 0.472529 ( -0.033374  0.033351 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.8057e-07 ( -4.15482e-08  4.1863e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.260 sec. to   14.176 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.21960   ( -0.441879   0.49062 )
    beta        : -10.0000    ( 10   20 )
    Epeak [keV] : 88.9396      ( -22.1347 -88.9396 )
    Norm@50keV   : 6.14053E-03    ( -0.00247732   0.00482322 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.29 using 59 PHA bins.
    # Reduced chi-squared =          1.060 for     55 degrees of freedom 
    # Null hypothesis probability =   3.552418e-01
     
    Photon flux (15-150 keV)    in 14.44 sec: 0.471996 ( 6.528  -0.03282 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.80247e-07 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 13.5672  (-1.12013  1.22965)
    R^2/D10^2   : 7.50005E-02  (-0.0200477   0.0272554)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         108.18 using 59 PHA bins.
    # Reduced chi-squared =         1.8980 for     57 degrees of freedom 
    # Null hypothesis probability =   5.062617e-05
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.221e-08   4.744e-09
    25- 50  1.521e-07   1.259e-08
    50-150  1.813e-07   2.693e-08
    15-150  3.756e-07   3.126e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 156.135       (-44.3642      -155.198)
    Norm        : 1.98128       (-0.141009     0.172426)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.40 using 59 PHA bins.
    # Reduced chi-squared =          1.025 for     57 degrees of freedom 
    # Null hypothesis probability =   4.238131e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  7.322e-08   6.274e-09
    25- 50  1.365e-07   2.244e-08
    50-150  2.739e-07   1.096e-07
    15-150  4.836e-07   1.308e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 5.79905        (-1.26394      1.51509)
    R1^2/D10^2  : 0.969100        (-0.537193      1.55171)
    kT2 [keV]   : 21.2001        (-3.26192      5.07857)
    R2^2/D10^2  : 1.23182E-02    (-0.00691688   0.0112564)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          57.55 using 59 PHA bins.
    # Reduced chi-squared =          1.046 for     55 degrees of freedom 
    # Null hypothesis probability =   3.811131e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  7.449e-08   2.307e-08
    25- 50  1.328e-07   3.213e-08
    50-150  2.651e-07   7.097e-08
    15-150  4.723e-07   1.123e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    1.120 sec. to    2.120 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.33091     ( -0.118367   0.118322 )
    Norm@50keV  : 1.59181E-02    ( -0.00111959   0.00111841 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.82 using 59 PHA bins.
    # Reduced chi-squared =          1.049 for     57 degrees of freedom 
    # Null hypothesis probability =   3.737892e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.91031 ( -0.136007  0.136125 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.56147e-07 ( -1.223e-08  1.23006e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    1.120 sec. to    2.120 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.844645     ( -0.526872   0.469738 )
    Epeak [keV] : 121.922      ( -39.5078 1099.55 )
    Norm@50keV  : 2.77833E-02    ( -0.0113413   0.02231 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          56.68 using 59 PHA bins.
    # Reduced chi-squared =          1.012 for     56 degrees of freedom 
    # Null hypothesis probability =   4.493155e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.87560 ( -0.14021  0.14015 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.51076e-07 ( -1.3441e-08  1.3366e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    1.120 sec. to    2.120 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 1.22634   ( -1.50177   -0.390407 )
    beta        : -1.54282    ( 1.5376   0.200077 )
    Epeak [keV] : 42.2668      ( -24.5091 127.93 )
    Norm@50keV   : 0.661076    ( -0.663892   120.476 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.28 using 59 PHA bins.
    # Reduced chi-squared =         0.9870 for     55 degrees of freedom 
    # Null hypothesis probability =   5.019840e-01
     
    Photon flux (15-150 keV)    in 1 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]    : 16.2022  (-1.42675  1.60885)
    R^2/D10^2   : 0.174032  (-0.0482816   0.0649874)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          91.79 using 59 PHA bins.
    # Reduced chi-squared =          1.610 for     57 degrees of freedom 
    # Null hypothesis probability =   2.384571e-03
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  9.419e-09   1.264e-09
    25- 50  4.006e-08   4.115e-09
    50-150  7.385e-08   9.770e-09
    15-150  1.233e-07   1.025e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (      )
    Norm        : 7.90109       (-0.554487     0.554454)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          66.58 using 59 PHA bins.
    # Reduced chi-squared =          1.168 for     57 degrees of freedom 
    # Null hypothesis probability =   1.807080e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.968e-08   1.595e-09
    25- 50  3.785e-08   4.060e-09
    50-150  8.302e-08   2.358e-08
    15-150  1.405e-07   3.448e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 9.10672        (-1.84144      2.01796)
    R1^2/D10^2  : 0.799348        (-0.343938      0.734545)
    kT2 [keV]   : 33.5983        (-8.59572      22.6616)
    R2^2/D10^2  : 1.09800E-02    (-0.00858363   0.0123231)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.75 using 59 PHA bins.
    # Reduced chi-squared =         0.9773 for     55 degrees of freedom 
    # Null hypothesis probability =   5.223356e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.479e-08   3.830e-09
    25- 50  3.973e-08   1.028e-08
    50-150  9.903e-08   4.368e-08
    15-150  1.535e-07   5.449e-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: 1.58842     ( -0.104944   0.10614 )
    Norm@50keV  : 4.94590E-03    ( -0.000307692   0.000306146 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.34 using 59 PHA bins.
    # Reduced chi-squared =          1.041 for     57 degrees of freedom 
    # Null hypothesis probability =   3.904805e-01
     
    Photon flux (15-150 keV)    in 10.44 sec: 0.633314 ( -0.0381636  0.0382052 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.83593e-07 ( -3.24716e-08  3.27125e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.00475     ( -0.466826   0.421878 )
    Epeak [keV] : 83.5956      ( -18.3528 84.4487 )
    Norm@50keV  : 9.82086E-03    ( -0.00376039   0.00695749 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.54 using 59 PHA bins.
    # Reduced chi-squared =         0.9560 for     56 degrees of freedom 
    # Null hypothesis probability =   5.685884e-01
     
    Photon flux (15-150 keV)    in 10.44 sec: 0.614761 ( -0.040325  0.040322 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.61348e-07 ( -3.60441e-08  3.63322e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.00482   ( -0.448519   0.438561 )
    beta        : -10.0000    ( 10   6.03961e-14 )
    Epeak [keV] : 83.5898      ( -18.3644 84.3263 )
    Norm@50keV   : 9.81905E-03    ( -0.00375893   0.00696671 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.54 using 59 PHA bins.
    # Reduced chi-squared =         0.9734 for     55 degrees of freedom 
    # Null hypothesis probability =   5.306124e-01
     
    Photon flux (15-150 keV)    in 10.44 sec: 0.614378 ( 6.38562  -0.037181 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.63277e-07 ( 0  0 ) ergs/cm2
     
    

    S(25-50 keV) vs. S(50-100 keV) plot

    S(25-50 keV)  = 1.32e-07
    S(50-100 keV) = 1.69e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 10.027999997139 sec.
    Hardness ratio (energy fluence ratio) = 1.2803
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.23394
    Count Ratio (50-100 keV) / (15-25 keV) = 0.853864
    

    Mask shadow pattern

    IMX = 3.274621348539180E-01, IMY = 7.018943057258914E-02
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.512000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.512000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.512000
    

    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:
    -239.320000 -0.260000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    333.5886  24.9389    2.3  48.6  168.2   1.8946   5.0 ------	UNKNOWN                       
     19.3824 -69.5483    2.7  53.4    7.5   2.6420   4.2 ------	UNKNOWN                       
      8.1104 -10.2665    3.0  13.1 -107.1   0.5442   3.8 ------	UNKNOWN                       
    356.8363  41.4005    3.9  59.3 -163.2   3.4776   3.0 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -0.260000 10.180600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
      7.8217 -33.7481    0.4  18.5  -12.1   0.8526  30.0 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    51.380600 408.280600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    339.8295 -75.4756    3.1  43.8   24.0   1.6843   3.8 ------	UNKNOWN                       
     66.3741 -81.4291    2.6  52.1    4.9   2.5906   4.5 ------	UNKNOWN                       
     27.6975 -65.2923    2.5  33.8   -0.6   1.2640   4.7 ------	UNKNOWN                       
     36.5486 -58.2088    2.4  31.1  -15.2   0.9895   4.8 ------	UNKNOWN                       
     51.2481 -65.6604    2.3  41.0  -11.4   1.4287   5.1 ------	UNKNOWN                       
     91.7792 -58.7525    2.9  58.7  -22.9   5.3874   3.9 ------	UNKNOWN                       
     50.7217 -25.6886    3.0  37.9  -76.4   2.0149   3.9 ------	UNKNOWN                       
    
    Plot creation:
    Sun May 31 12:42:25 EDT 2015