batgrbproduct Analysis for Trigger=530581

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Aug 11 12:00:33 EDT 2012
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger530581/GCN5_download_cron
======================================================================

  Trigger: 00530581      Segment: 000

  BAT Trigger Time: 366345328.448   [s; MET]
      Trigger Stop: 366345329.472   [s; MET]
               UTC: 2012-08-11T02:35:18.923980    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 257.18263991766   Dec: -22.7358138782081  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    7.05
     Image Trigger?:     NO
     Rate S/N Ratio:     10.2469507659596  [ if not an image trigger ]
     Image S/N Ratio:    7.05

  Flight Position:   [ source = BAT ]
    RA: 257.18263991766   Dec: -22.7358138782081  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 257.18372421682   Dec: -22.7351986610098  [deg; J2000]  
        { 17h 08m 44.1s , -22d 44' 06.7" }
         +/- 2.61985590752851 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.46200708313359 [arcmin] (formal 1-sigma fit error)
    SNR: 7.68385620586114
 
  Angular difference between Flight and Ground position is 0.070448 arcmin
 
  Partial Coding Fraction: 0.984375    [ including projection effects ]

  Duration
     T90: 165.995999932289 +/- 52.4615523775905
        Measured from: -11.0959998965263
                   to: 154.900000035763     [s; relative to TRIGTIME]
     T50: 23.1279999017715 +/- 39.4885194890551
        Measured from: -2.11199986934662
                   to: 21.0160000324249     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.427999973297119     
                   to: 1.42799997329712     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -14.1560000181198     
                   to: 169.06400001049     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.819487   0.762197   0.419975   0.109804
           0.078434   0.069586   0.057948   0.049334 [error]
 Peak      0.052320   0.042016   0.025110  -0.000196
           0.006131   0.005676   0.004544   0.003842 [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 2.24e-07 3.12e-07 3.22e-07 6.08e-07 1.05e-06 1.47e-06   erg/cm2
              Error 3.56e-08 3.22e-08 5.66e-08 2.19e-07 1.28e-07 2.74e-07   erg/cm2
Peak flux Power-law 4.45e-01 3.34e-01 1.67e-01 1.20e-01 1.00e+00 1.07e+00   ph/cm2/s
              Error 9.04e-02 4.55e-02 3.84e-02 5.31e-02 1.38e-01 1.46e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.21e-07 3.17e-07 3.22e-07 4.89e-07 1.35e-06 0.00e+00   erg/cm2
              Error 3.90e-08 3.87e-08 5.83e-08 3.99e-07 0.00e+00 0.00e+00   erg/cm2
Peak flux Cutoff-PL 4.31e-01 3.45e-01 1.68e-01 1.16e-01 9.91e-01 1.02e+00   ph/cm2/s
              Error 1.03e-01 5.68e-02 4.03e-02 9.24e-02 1.43e-01 1.72e-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    1.955    0.205    -      -           6.24e-04 7.85e-05   42.980 57
CPL   1.838    0.606      60.8    0.0      7.25e-04 0.00e+00   42.910 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.999    0.266    -      -           6.69e-03 1.15e-03   61.680 57
CPL   1.713    0.802      43.8   -0.6      9.68e-03 1.87e-02   61.440 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: 23.616000 sec.
T50 in the 50-300 keV band: 12.608000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  183.220  -14.156  169.064
T90   165.996  -11.096  154.900
T50    23.128   -2.112   21.016
Peak    1.000    0.428    1.428

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  257.1837 -22.7352 0.0252   15.7    9.0       1.9055     7.7  TRIG_00530581       
------------------------------------------
 
Foreground time interval of the image:
-14.156 169.064 (delta_t = 183.220 [sec])
Background time interval of the image:
-87.347 -14.156 (delta_t =  73.191 [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  -14.156 sec. to  169.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.95487     ( -0.200319   0.209124 )
Norm@50keV  : 6.23608E-04    ( -7.94571e-05   7.75142e-05 )
------------------------------------------------------------
# Chi-Squared =          42.98 using 59 PHA bins.
# Reduced chi-squared =         0.7541 for     57 degrees of freedom 
# Null hypothesis probability =   9.154933e-01
 
Photon flux (15-150 keV)    in 183.2 sec: 9.16527E-02 ( -0.00959974  0.00961688 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.05152e-06 ( -1.27015e-07  1.29463e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -14.156 sec. to  169.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.83762     ( -0.825323   0.385801 )
Epeak [keV] : 60.8181      (   )
Norm@50keV  : 7.24732E-04    (     )
------------------------------------------------------------
# Chi-Squared =          42.91 using 59 PHA bins.
# Reduced chi-squared =         0.7662 for     56 degrees of freedom 
# Null hypothesis probability =   9.005994e-01
 
Photon flux (15-150 keV)    in 183.2 sec: 9.10906E-02 ( -0.0097245  0.0100024 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.34817e-06 ( -3.9523e-07  4.01787e-07 ) ergs/cm2
 
Band function
Time interval is from  -14.156 sec. to  169.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -9.12912   ( 6.57997   8.05172 )
beta        : -1.95488    ( -0.20912   0.200374 )
Epeak [keV] : 32.6545      ( -32.6545 -32.6545 )
Norm@50keV   : 8.47570E-02    ( -0.0107992   0.0105354 )
------------------------------------------------------------
# Chi-Squared =          42.98 using 59 PHA bins.
# Reduced chi-squared =         0.7815 for     55 degrees of freedom 
# Null hypothesis probability =   8.804183e-01
 
Photon flux (15-150 keV)    in 183.2 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]    : 10.6032  (-1.39691  1.64669)
R^2/D10^2   : 3.27835E-02  (-0.0138207   0.0236979)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          68.24 using 59 PHA bins.
# Reduced chi-squared =          1.197 for     57 degrees of freedom 
# Null hypothesis probability =   1.464018e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.399e-07   2.743e-08
25- 50  3.771e-07   5.276e-08
50-150  2.326e-07   5.949e-08
15-150  7.496e-07   9.856e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 76.2315       (-22.8835      41.1172)
Norm        : 0.431129       (-0.0682878     0.0875953)
------------------------------------------------------------
# Chi-Squared =          44.13 using 59 PHA bins.
# Reduced chi-squared =         0.7743 for     57 degrees of freedom 
# Null hypothesis probability =   8.936473e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.042e-07   3.281e-08
25- 50  3.323e-07   3.884e-08
50-150  4.538e-07   1.944e-07
15-150  9.903e-07   1.645e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.10364        (-1.65664      1.94641)
R1^2/D10^2  : 0.383864        (-0.266362      1.75043)
kT2 [keV]   : 18.9528        (-4.84154      9.8635)
R2^2/D10^2  : 2.84978E-03    (-0.00225605   0.00385498)
------------------------------------------------------------
# Chi-Squared =          43.94 using 59 PHA bins.
# Reduced chi-squared =         0.7989 for     55 degrees of freedom 
# Null hypothesis probability =   8.577632e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.224e-07   1.134e-07
25- 50  3.046e-07   1.187e-07
50-150  4.731e-07   2.626e-07
15-150  1.000e-06   4.177e-07

Peak spectrum fit

Power-law model
Time interval is from    0.428 sec. to    1.428 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.99909     ( -0.256755   0.276101 )
Norm@50keV  : 6.68747E-03    ( -0.00117059   0.00113075 )
------------------------------------------------------------
# Chi-Squared =          61.68 using 59 PHA bins.
# Reduced chi-squared =          1.082 for     57 degrees of freedom 
# Null hypothesis probability =   3.123828e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.00270 ( -0.137444  0.137559 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.16708e-08 ( -9.96474e-09  1.0205e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.428 sec. to    1.428 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.71273     ( -1.15844   0.444886 )
Epeak [keV] : 43.8462      ( -42.5663 -43.846 )
Norm@50keV  : 9.68090E-03    ( -0.00480971   0.0325659 )
------------------------------------------------------------
# Chi-Squared =          61.44 using 59 PHA bins.
# Reduced chi-squared =          1.097 for     56 degrees of freedom 
# Null hypothesis probability =   2.875259e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.990773 ( -0.143433  0.142807 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.22906e-08 ( -2.92348e-08  1.5916e-08 ) ergs/cm2
 
Band function
Time interval is from    0.428 sec. to    1.428 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.71492   ( 1.71495   1.16575 )
beta        : -9.36867    ( 9.99666   19.9967 )
Epeak [keV] : 43.6201      ( -22.8082 -43.6543 )
Norm@50keV   : 9.66516E-03    ( -0.00322401   0.00424017 )
------------------------------------------------------------
# Chi-Squared =          61.44 using 59 PHA bins.
# Reduced chi-squared =          1.117 for     55 degrees of freedom 
# Null hypothesis probability =   2.564201e-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]    : 10.9015  (-1.77203  2.07579)
R^2/D10^2   : 0.329871  (-0.1596   0.317417)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          75.32 using 59 PHA bins.
# Reduced chi-squared =          1.321 for     57 degrees of freedom 
# Null hypothesis probability =   5.246081e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.176e-09   2.169e-09
25- 50  2.285e-08   4.410e-09
50-150  1.523e-08   4.987e-09
15-150  4.626e-08   9.705e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 70.4724       (-24.4718      49.355)
Norm        : 4.88402       (-0.989194     1.2691)
------------------------------------------------------------
# Chi-Squared =          61.87 using 59 PHA bins.
# Reduced chi-squared =          1.085 for     57 degrees of freedom 
# Null hypothesis probability =   3.066466e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.254e-08   2.518e-09
25- 50  1.999e-08   3.230e-09
50-150  2.580e-08   1.082e-08
15-150  5.833e-08   1.331e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.52973        (-1.34627      2.15459)
R1^2/D10^2  : 20.6185        (-18.1103      320.289)
kT2 [keV]   : 15.0997        (-3.23692      5.61408)
R2^2/D10^2  : 8.18343E-02    (-0.059436   0.0708654)
------------------------------------------------------------
# Chi-Squared =          60.16 using 59 PHA bins.
# Reduced chi-squared =          1.094 for     55 degrees of freedom 
# Null hypothesis probability =   2.944817e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.379e-08   7.211e-09
25- 50  1.806e-08   8.164e-09
50-150  2.429e-08   1.418e-08
15-150  5.614e-08   2.354e-08
Plot creation:
Sat Aug 11 12:17:28 EDT 2012