batgrbproduct Analysis for Trigger=433442

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Sep  6 11:41:22 EDT 2010
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger433442/GCN5_download_cron
======================================================================

  Trigger: 00433442      Segment: 000

  BAT Trigger Time: 305392100.864   [s; MET]
      Trigger Stop: 305392101.888   [s; MET]
               UTC: 2010-09-05T15:08:14.715440    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 31.5300993876886   Dec: 14.9318648275642  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.53
     Image Trigger?:     NO
     Rate S/N Ratio:     14.0356688476182  [ if not an image trigger ]
     Image S/N Ratio:    8.53

  Flight Position:   [ source = BAT ]
    RA: 31.5300993876886   Dec: 14.9318648275642  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 31.540841609483   Dec: 14.9201132226877  [deg; J2000]  
        { 02h 06m 09.8s , +14d 55' 12.4" }
         +/- 1.71121565463065 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.866509591191102 [arcmin] (formal 1-sigma fit error)
    SNR: 14.1197135990226
 
  Angular difference between Flight and Ground position is 0.940757 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 3.40399998426437 +/- 0.50925829092701
        Measured from: -1.5239999294281
                   to: 1.88000005483627     [s; relative to TRIGTIME]
     T50: 1.59199994802475 +/- 0.477346851085323
        Measured from: -0.6039999127388
                   to: 0.98800003528595     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.0320000052452087     
                   to: 1.03200000524521     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.64000004529953     
                   to: 2.13999998569489     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.044134   0.103332   0.082802   0.025205
           0.009411   0.010074   0.009019   0.007358 [error]
 Peak      0.009510   0.034280   0.030508   0.009951
           0.004890   0.005234   0.004807   0.003759 [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 1.43e-08 3.40e-08 6.39e-08 2.91e-07 1.73e-07 4.04e-07   erg/cm2
              Error 3.08e-09 4.44e-09 8.19e-09 8.31e-08 2.13e-08 8.80e-08   erg/cm2
Peak flux Power-law 1.20e-01 1.75e-01 1.90e-01 3.87e-01 6.04e-01 8.72e-01   ph/cm2/s
              Error 4.36e-02 4.04e-02 3.50e-02 1.46e-01 1.11e-01 1.71e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.24e-08 3.61e-08 6.81e-08 1.20e-07 1.66e-07 2.37e-07   erg/cm2
              Error 3.66e-09 5.27e-09 9.64e-09 1.32e-07 2.31e-08 1.32e-07   erg/cm2
Peak flux Cutoff-PL 7.54e-02 1.89e-01 2.28e-01 6.05e-01 0.00e+00 0.00e+00   ph/cm2/s
              Error 4.84e-02 4.99e-02 4.67e-02 1.59e-01 0.00e+00 0.00e+00   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 6.21e-01 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    1.087    0.189    -      -           4.37e-03 4.90e-04   54.590 57
CPL   0.396    0.847     125.5  -41.0      9.26e-03 9.71e-03   52.120 56
 
The chi2 of BB fit is  which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.880    0.288    -      -           5.26e-03 9.72e-04   57.480 57
CPL  -0.852    1.685      94.6   76.2      3.03e-02 1.06e-01   52.370 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: 2.816000 sec.
T50 in the 50-300 keV band: 1.216000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    3.780   -1.640    2.140
T90     3.404   -1.524    1.880
T50     1.592   -0.604    0.988
Peak    1.000    0.032    1.032

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   31.5408 +14.9201 0.0135    8.8   12.5       0.2633    14.1  TRIG_00433442       
------------------------------------------
 
Foreground time interval of the image:
 -1.640   2.140 (delta_t =   3.780 [sec])
Background time interval of the image:
-134.963  -1.640 (delta_t = 133.323 [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   -1.640 sec. to    2.140 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.08724     ( -0.191488   0.186272 )
Norm@50keV  : 4.36715E-03    ( -0.000490172   0.000489636 )
------------------------------------------------------------
# Chi-Squared =          54.59 using 59 PHA bins.
# Reduced chi-squared =         0.9578 for     57 degrees of freedom 
# Null hypothesis probability =   5.659528e-01
 
Photon flux (15-150 keV)    in 3.78 sec: 0.505954 ( -0.0580422  0.0581642 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.73307e-07 ( -2.12349e-08  2.13926e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.640 sec. to    2.140 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.396251     ( -0.900852   0.792757 )
Epeak [keV] : 125.464      ( -43.3948 -125.465 )
Norm@50keV  : 9.26452E-03    ( -0.00502493   0.0143939 )
------------------------------------------------------------
# Chi-Squared =          52.12 using 59 PHA bins.
# Reduced chi-squared =         0.9308 for     56 degrees of freedom 
# Null hypothesis probability =   6.223941e-01
 
Photon flux (15-150 keV)    in 3.78 sec: 0.493205 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.66118e-07 ( -2.31941e-08  2.30361e-08 ) ergs/cm2
 
Band function
Time interval is from   -1.640 sec. to    2.140 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.24013   ( -16.2883   -6.43465 )
beta        : -1.33312    ( -0.186742   0.255655 )
Epeak [keV] : 36.7157      ( -9.65643 8.52046 )
Norm@50keV   : 13.2267    ( -13.2317   6.5063 )
------------------------------------------------------------
# Chi-Squared =          50.38 using 59 PHA bins.
# Reduced chi-squared =         0.9160 for     55 degrees of freedom 
# Null hypothesis probability =   6.515643e-01
 
Photon flux (15-150 keV)    in 3.78 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]    :   (  )
R^2/D10^2   :   (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    :        (      )
Norm        :        (     )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   :         (      )
R1^2/D10^2  :         (      )
kT2 [keV]   :         (      )
R2^2/D10^2  :     (   )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     

Peak spectrum fit

Power-law model
Time interval is from    0.032 sec. to    1.032 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.879540     ( -0.297728   0.278856 )
Norm@50keV  : 5.26057E-03    ( -0.000976626   0.000967006 )
------------------------------------------------------------
# Chi-Squared =          57.48 using 59 PHA bins.
# Reduced chi-squared =          1.008 for     57 degrees of freedom 
# Null hypothesis probability =   4.573727e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.603708 ( -0.11099  0.111653 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.9514e-08 ( -1.11098e-08  1.11937e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.032 sec. to    1.032 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.851816     ( -2.00875   1.36209 )
Epeak [keV] : 94.5996      ( -24.9876 127.335 )
Norm@50keV  : 3.03443E-02    ( -0.0303449   0.180911 )
------------------------------------------------------------
# Chi-Squared =          52.37 using 59 PHA bins.
# Reduced chi-squared =         0.9352 for     56 degrees of freedom 
# Null hypothesis probability =   6.129761e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.032 sec. to    1.032 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.851651   ( -1.23526   1.00466 )
beta        : -10.00000    ( 1.09846e+08   1.09846e+08 )
Epeak [keV] : 94.6012      ( -24.9814 127.321 )
Norm@50keV   : 3.03392E-02    ( -0.0303379   0.180924 )
------------------------------------------------------------
# Chi-Squared =          52.37 using 59 PHA bins.
# Reduced chi-squared =         0.9522 for     55 degrees of freedom 
# Null hypothesis probability =   5.756530e-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]    :   (  )
R^2/D10^2   :   (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    :        (      )
Norm        :        (     )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   :         (      )
R1^2/D10^2  :         (      )
kT2 [keV]   :         (      )
R2^2/D10^2  :     (   )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Plot creation:
Mon Sep  6 11:59:22 EDT 2010