batgrbproduct Analysis for Trigger=506070

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Oct 23 13:05:55 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger506070/GCN5_download_cron
======================================================================

  Trigger: 00506070      Segment: 000

  BAT Trigger Time: 340992432.448   [s; MET]
      Trigger Stop: 340992433.472   [s; MET]
               UTC: 2011-10-22T16:07:04.954100    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 275.871554015748   Dec: -23.667890214955  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.41
     Image Trigger?:     NO
     Rate S/N Ratio:     18.6279360101972  [ if not an image trigger ]
     Image S/N Ratio:    12.41

  Flight Position:   [ source = BAT ]
    RA: 275.871554015748   Dec: -23.667890214955  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 275.870351739821   Dec: -23.6686086585439  [deg; J2000]  
        { 18h 23m 28.9s , -23d 40' 07.0" }
         +/- 0.917239815017922 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.343624836225045 [arcmin] (formal 1-sigma fit error)
    SNR: 34.4123427517368
 
  Angular difference between Flight and Ground position is 0.078888 arcmin
 
  Partial Coding Fraction: 0.6640625    [ including projection effects ]

  Duration
     T90: 24.7999998927116 +/- 4.23108733304294
        Measured from: -14.2279998660088
                   to: 10.5720000267029     [s; relative to TRIGTIME]
     T50: 7.68399995565414 +/- 0.974894839120032
        Measured from: -4.66399991512299
                   to: 3.02000004053116     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -1.46399998664856     
                   to: -0.46399998664856     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -17.6840000152588     
                   to: 17.5920000076294     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.004072   1.413497   0.813642   0.196855
           0.048595   0.047375   0.041777   0.039618 [error]
 Peak      0.074833   0.118960   0.071478   0.007673
           0.008841   0.008999   0.007814   0.006819 [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 3.55e-07 5.64e-07 6.76e-07 1.58e-06 2.05e-06 3.17e-06   erg/cm2
              Error 2.61e-08 2.51e-08 4.24e-08 2.11e-07 9.93e-08 2.45e-07   erg/cm2
Peak flux Power-law 9.12e-01 8.12e-01 4.97e-01 4.61e-01 2.42e+00 2.68e+00   ph/cm2/s
              Error 1.31e-01 7.58e-02 6.51e-02 1.18e-01 2.24e-01 2.50e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.12e-07 6.06e-07 6.82e-07 5.20e-07 1.90e-06 2.12e-06   erg/cm2
              Error 3.15e-08 3.19e-08 4.73e-08 2.43e-07 1.17e-07 2.69e-07   erg/cm2
Peak flux Cutoff-PL 8.08e-01 8.93e-01 5.09e-01 1.65e-01 2.33e+00 2.37e+00   ph/cm2/s
              Error 1.52e-01 9.97e-02 7.46e-02 1.38e-01 2.33e-01 2.68e-01   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.738    0.081    -      -           6.29e-03 2.92e-04   72.780 57
CPL   0.930    0.386      62.2   11.4      1.66e-02 8.05e-03   57.260 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.709    0.160    -      -           1.81e-02 1.84e-03   67.560 57
CPL   0.792    0.759      59.5   28.7      5.73e-02 6.87e-02   62.130 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: 20.672000 sec.
T50 in the 50-300 keV band: 8.768000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   35.276  -17.684   17.592
T90    24.800  -14.228   10.572
T50     7.684   -4.664    3.020
Peak    1.000   -1.464   -0.464

Image

Pre-slew 15-350 keV image (Event data; bkg subtracted)

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  275.8704 -23.6686 0.0056   26.8  145.9       3.4437    34.4  TRIG_00506070       
------------------------------------------
 
Foreground time interval of the image:
-17.684  11.253 (delta_t =  28.937 [sec])
Background time interval of the image:
-91.147 -17.684 (delta_t =  73.463 [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

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Spectra

Notes:

Time averaged spectrum fit using the pre-slew DRM

Power-law model
Time interval is from  -17.684 sec. to   17.592 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.73844     ( -0.0803584   0.0812493 )
Norm@50keV  : 6.29250E-03    ( -0.000292857   0.000291482 )
------------------------------------------------------------
# Chi-Squared =          72.78 using 59 PHA bins.
# Reduced chi-squared =          1.277 for     57 degrees of freedom 
# Null hypothesis probability =   7.765529e-02
 
Photon flux (15-150 keV)    in 35.28 sec: 0.847262 ( -0.0382305  0.0383034 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.04987e-06 ( -9.90285e-08  9.96025e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -17.684 sec. to   17.592 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.929712     ( -0.404228   0.368544 )
Epeak [keV] : 62.2352      ( -7.71102 15.1734 )
Norm@50keV  : 1.65966E-02    ( -0.00583966   0.0102519 )
------------------------------------------------------------
# Chi-Squared =          57.26 using 59 PHA bins.
# Reduced chi-squared =          1.022 for     56 degrees of freedom 
# Null hypothesis probability =   4.282991e-01
 
Photon flux (15-150 keV)    in 35.28 sec: 0.806224 ( -0.041874  0.042007 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.89978e-06 ( -1.16696e-07  1.18124e-07 ) ergs/cm2
 
Band function
Time interval is from  -17.684 sec. to   17.592 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.929675   ( -0.314906   0.375519 )
beta        : -10.00000    ( 2.79566e+11   2.79566e+11 )
Epeak [keV] : 62.2234      ( -7.71074 15.1698 )
Norm@50keV   : 1.65964E-02    ( -0.00584051   0.0102588 )
------------------------------------------------------------
# Chi-Squared =          57.26 using 59 PHA bins.
# Reduced chi-squared =          1.041 for     55 degrees of freedom 
# Null hypothesis probability =   3.914356e-01
 
Photon flux (15-150 keV)    in 35.28 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]    : 12.6308  (  )
R^2/D10^2   : 0.167117  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         121.82 using 59 PHA bins.
# Reduced chi-squared =         2.1371 for     57 degrees of freedom 
# Null hypothesis probability =   1.315871e-06
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.995e-07   1.535e-08
25- 50  6.657e-07   3.546e-08
50-150  6.599e-07   5.698e-08
15-150  1.525e-06   8.291e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 114.796       (-4.42076      40.5106)
Norm        : 3.62390       (-0.215771     0.236795)
------------------------------------------------------------
# Chi-Squared =          59.70 using 59 PHA bins.
# Reduced chi-squared =          1.047 for     57 degrees of freedom 
# Null hypothesis probability =   3.776843e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.335e-07   2.163e-08
25- 50  5.920e-07   2.769e-08
50-150  1.033e-06   1.282e-07
15-150  1.959e-06   1.436e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.79187        (-1.3156      1.27608)
R1^2/D10^2  : 0.641864        (-0.228751      0.476528)
kT2 [keV]   : 23.4138        (-4.41108      7.67425)
R2^2/D10^2  : 1.14933E-02    (-0.00763654   0.0160845)
------------------------------------------------------------
# Chi-Squared =          57.25 using 59 PHA bins.
# Reduced chi-squared =          1.041 for     55 degrees of freedom 
# Null hypothesis probability =   3.917481e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.836e-07   4.523e-08
25- 50  6.259e-07   9.596e-08
50-150  9.933e-07   3.967e-07
15-150  1.903e-06   5.049e-07

Peak spectrum fit

Power-law model
Time interval is from   -1.464 sec. to   -0.464 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.70861     ( -0.157889   0.162141 )
Norm@50keV  : 1.81378E-02    ( -0.00185054   0.00182903 )
------------------------------------------------------------
# Chi-Squared =          67.56 using 59 PHA bins.
# Reduced chi-squared =          1.185 for     57 degrees of freedom 
# Null hypothesis probability =   1.598464e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.41618 ( -0.224075  0.224228 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.67824e-07 ( -1.78265e-08  1.80683e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.464 sec. to   -0.464 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.791804     ( -0.82914   0.688825 )
Epeak [keV] : 59.5286      ( -11.8211 45.5738 )
Norm@50keV  : 5.73093E-02    ( -0.0327091   0.104697 )
------------------------------------------------------------
# Chi-Squared =          62.13 using 59 PHA bins.
# Reduced chi-squared =          1.109 for     56 degrees of freedom 
# Null hypothesis probability =   2.671197e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.32868 ( -0.23287  0.23302 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.5462e-07 ( -1.9686e-08  2.0365e-08 ) ergs/cm2
 
Band function
Time interval is from   -1.464 sec. to   -0.464 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.791697   ( -0.596156   1.24089 )
beta        : -10.00000    ( 8.18924e+09   8.18924e+09 )
Epeak [keV] : 59.5161      ( -11.8189 45.567 )
Norm@50keV   : 5.73155E-02    ( -0.0327435   0.104787 )
------------------------------------------------------------
# Chi-Squared =          62.13 using 59 PHA bins.
# Reduced chi-squared =          1.130 for     55 degrees of freedom 
# Null hypothesis probability =   2.372621e-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]    : 12.1655  (-1.25251  1.42487)
R^2/D10^2   : 0.568332  (-0.19053   0.279943)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          77.51 using 59 PHA bins.
# Reduced chi-squared =          1.360 for     57 degrees of freedom 
# Null hypothesis probability =   3.673189e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.781e-08   3.085e-09
25- 50  5.695e-08   6.370e-09
50-150  5.114e-08   1.139e-08
15-150  1.259e-07   1.505e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 116.585       (-18.7998      82.6858)
Norm        : 10.4181       (-1.16924     1.39633)
------------------------------------------------------------
# Chi-Squared =          63.42 using 59 PHA bins.
# Reduced chi-squared =          1.113 for     57 degrees of freedom 
# Null hypothesis probability =   2.605462e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.716e-08   3.485e-09
25- 50  4.835e-08   4.780e-09
50-150  8.506e-08   1.487e-08
15-150  1.606e-07   1.795e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.08476        (-2.41433      2.62154)
R1^2/D10^2  : 2.49057        (-1.4805      7.01749)
kT2 [keV]   : 20.9988        (-5.8597      17.9992)
R2^2/D10^2  : 5.29407E-02    (-0.0478867   0.0788673)
------------------------------------------------------------
# Chi-Squared =          61.71 using 59 PHA bins.
# Reduced chi-squared =          1.122 for     55 degrees of freedom 
# Null hypothesis probability =   2.487848e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.474e-08   1.279e-08
25- 50  5.117e-08   2.326e-08
50-150  7.943e-08   4.271e-08
15-150  1.553e-07   7.633e-08
Plot creation:
Sun Oct 23 13:30:20 EDT 2011