batgrbproduct analysis for trigger=200638

batgrbproduct Analysis for Trigger=200638

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done using the HEASARC data.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Jan 22 18:10:56 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger200638
======================================================================

  Trigger: 00200638      Segment: 000

  BAT Trigger Time: 163298951.68   [s; MET]
      Trigger Stop: 163298952.704   [s; MET]
               UTC: 2006-03-06T00:49:10.626240    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 41.098878206475   Dec: -2.15303951917031  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    19.98
     Image Trigger?:     NO
     Rate S/N Ratio:     60.7618301238533  [ if not an image trigger ]
     Image S/N Ratio:    19.98

  Flight Position:   [ source = BAT ]
    RA: 41.098878206475   Dec: -2.15303951917031  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 41.0981070281877   Dec: -2.16283013767294  [deg; J2000]  
        { 02h 44m 23.5s , -02d 09' 46.2" }
         +/- 1.04600535303472 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.47078252953716 [arcmin] (formal 1-sigma fit error)
    SNR: 28.5241557032444
 
  Angular difference between Flight and Ground position is 0.589254 arcmin
 
  Partial Coding Fraction: 0.5    [ including projection effects ]

  Duration
     T90: 60.9399999976158 +/- 3.36301769178435
        Measured from: -0.872000008821487
                   to: 60.0679999887943     [s; relative to TRIGTIME]
     T50: 42.8040000200272 +/- 0.631404789502995
        Measured from: 0.607999980449677
                   to: 43.4120000004768     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.183999985456467     
                   to: 1.18399998545647     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.35199999809265     
                   to: 66.919999986887     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.084990   1.403422   0.884060   0.188634
           0.054699   0.057566   0.050950   0.045636 [error]
 Peak      0.158102   0.270729   0.225059   0.057147
           0.010502   0.012150   0.011414   0.008273 [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 3.80e-07 5.96e-07 7.05e-07 1.62e-06 2.15e-06 3.30e-06   erg/cm2
              Error 3.12e-08 3.01e-08 5.06e-08 2.44e-07 1.19e-07 2.87e-07   erg/cm2
Peak flux Power-law 1.84e+00 1.98e+00 1.51e+00 1.89e+00 6.04e+00 7.22e+00   ph/cm2/s
              Error 1.71e-01 1.14e-01 9.15e-02 2.33e-01 3.22e-01 3.75e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.53e-07 6.27e-07 7.12e-07 7.55e-07 2.05e-06 2.45e-06   erg/cm2
              Error 3.71e-08 3.85e-08 5.46e-08 4.40e-07 1.39e-07 4.60e-07   erg/cm2
Peak flux Cutoff-PL 1.63e+00 2.07e+00 1.61e+00 1.10e+00 5.91e+00 6.41e+00   ph/cm2/s
              Error 2.08e-01 1.32e-01 1.12e-01 3.65e-01 3.31e-01 4.92e-01   ph/cm2/s
 
Fluence        Band 3.37e-07 6.42e-07 6.86e-07 1.18e-06 2.06e-06 2.85e-06   erg/cm2
              Error 4.01e-08 4.30e-08 5.71e-08 -------- 1.66e-07 4.31e-07   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    1.758    0.091    -      -           3.42e-03 1.82e-04   65.950 57
CPL   1.254    0.406      69.4   41.4      6.30e-03 3.25e-03   60.820 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.388    0.085    -      -           4.97e-02 2.56e-03   72.580 57
CPL   0.819    0.368     111.5   57.9      9.31e-02 3.84e-02   64.670 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: 44.864000 sec.
T50 in the 50-300 keV band: 27.584000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   68.272   -1.352   66.920
T90    60.940   -0.872   60.068
T50    42.804    0.608   43.412
Peak    1.000    0.184    1.184

Click here for the BAT GCN circular template

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   41.0981    -2.1628   0.0067    40.8715  -164.2708         1.9746467     28.524 TRIG_00200638                 
 
Foreground time interval of the image:
 -1.352  15.021 (delta_t =  16.373 [sec])
Background time interval of the image:
-299.680  -1.352 (delta_t = 298.328 [sec])

Lightcurves

Notes:

1) The mask-weighted light curves are using the flight position.
2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
3) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
4) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
5) Time of each bin is in the middle of the bin.

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:

1) The fitting includes the systematic errors.
2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.

Time averaged spectrum fit using the average DRM

Power-law model

Time interval is from   -1.352 sec. to   66.920 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75833     ( -0.0903316   0.0914572 )
Norm@50keV  : 3.41591E-03    ( -0.000182041   0.000180982 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.95 using 59 PHA bins.
# Reduced chi-squared =          1.157 for     57 degrees of freedom 
# Null hypothesis probability =   1.949467e-01
 
Photon flux (15-150 keV)    in 68.27 sec: 0.463315 ( -0.0236917  0.023731 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.15087e-06 ( -1.18229e-07  1.18907e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -1.352 sec. to   66.920 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25434     ( -0.426555   0.384572 )
Epeak [keV] : 69.3733      ( -13.6633 69.0577 )
Norm@50keV  : 6.29637E-03    ( -0.00230507   0.00419759 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.82 using 59 PHA bins.
# Reduced chi-squared =          1.086 for     56 degrees of freedom 
# Null hypothesis probability =   3.064240e-01
 
Photon flux (15-150 keV)    in 68.27 sec: 0.450621 ( -0.025523  0.025501 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.05444e-06 ( -1.39278e-07  1.39489e-07 ) ergs/cm2

Band function

Time interval is from   -1.352 sec. to   66.920 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.812663   ( -0.662506   2.67983 )
beta        : -2.04997    ( 2.05588   0.247652 )
Epeak [keV] : 50.8428      ( -21.8545 33.5033 )
Norm@50keV   : 1.17960E-02    ( -0.00719127   1.18702 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.49 using 59 PHA bins.
# Reduced chi-squared =          1.064 for     55 degrees of freedom 
# Null hypothesis probability =   3.484015e-01
 
Photon flux (15-150 keV)    in 68.27 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.06084e-06 ( -2.06036e-06  -1.31713e-07 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.3957  (  )
R^2/D10^2   : 9.75430E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         128.36 using 59 PHA bins.
# Reduced chi-squared =         2.2519 for     57 degrees of freedom 
# Null hypothesis probability =   2.028718e-07
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.169e-07   2.140e-08
25- 50  7.086e-07   4.270e-08
50-150  6.686e-07   7.469e-08
15-150  1.594e-06   8.670e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 115.709       (-22.8448      27.5929)
Norm        : 1.96119       (-0.127705     0.160287)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.78 using 59 PHA bins.
# Reduced chi-squared =          1.066 for     57 degrees of freedom 
# Null hypothesis probability =   3.413263e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.492e-07   2.970e-08
25- 50  6.207e-07   3.820e-08
50-150  1.088e-06   3.161e-07
15-150  2.058e-06   3.338e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.81189        (-1.52122      1.46985)
R1^2/D10^2  : 0.381261        (-0.152553      0.361727)
kT2 [keV]   : 26.5439        (-6.78959      15.9448)
R2^2/D10^2  : 3.95742E-03    (-0.00306891   0.00869884)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.40 using 59 PHA bins.
# Reduced chi-squared =          1.153 for     55 degrees of freedom 
# Null hypothesis probability =   2.042820e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.140e-07   5.376e-08
25- 50  6.605e-07   9.059e-08
50-150  1.081e-06   3.987e-07
15-150  2.056e-06   5.264e-07

Peak spectrum fit

Power-law model

Time interval is from    0.184 sec. to    1.184 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38761     ( -0.0851773   0.0853585 )
Norm@50keV  : 4.97478E-02    ( -0.00255769   0.00255696 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.58 using 59 PHA bins.
# Reduced chi-squared =          1.273 for     57 degrees of freedom 
# Null hypothesis probability =   7.993151e-02
 
Photon flux (15-150 keV)    in 1 sec: 6.04154 ( -0.322287  0.322697 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.81929e-07 ( -2.68033e-08  2.68678e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.184 sec. to    1.184 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.819000     ( -0.382877   0.352748 )
Epeak [keV] : 111.534      ( -25.3485 90.5436 )
Norm@50keV  : 9.30951E-02    ( -0.0293755   0.0473683 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.67 using 59 PHA bins.
# Reduced chi-squared =          1.155 for     56 degrees of freedom 
# Null hypothesis probability =   1.997976e-01
 
Photon flux (15-150 keV)    in 1 sec: 5.91474 ( -0.33112  0.3314 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.69867e-07 ( -2.8523e-08  2.8372e-08 ) ergs/cm2

Band function

Time interval is from    0.184 sec. to    1.184 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.97062E-02   ( -1.05862   2.30128 )
beta        : -1.64310    ( 1.64449   0.187966 )
Epeak [keV] : 58.2489      ( -22.6111 86.9931 )
Norm@50keV   : 0.319295    ( -0.291976   12.2837 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.93 using 59 PHA bins.
# Reduced chi-squared =          1.144 for     55 degrees of freedom 
# Null hypothesis probability =   2.159791e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.69282e-07 ( -4.69275e-07  -2.7897e-08 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 16.7547  (  )
R^2/D10^2   : 0.490926  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         127.91 using 59 PHA bins.
# Reduced chi-squared =         2.2441 for     57 degrees of freedom 
# Null hypothesis probability =   2.307829e-07
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.818e-08   2.545e-09
25- 50  1.232e-07   8.600e-09
50-150  2.458e-07   2.345e-08
15-150  3.972e-07   2.555e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 25.2016       (-1.29562     1.29548)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          78.45 using 59 PHA bins.
# Reduced chi-squared =          1.376 for     57 degrees of freedom 
# Null hypothesis probability =   3.132641e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.277e-08   3.850e-09
25- 50  1.207e-07   7.250e-09
50-150  2.648e-07   2.080e-08
15-150  4.483e-07   2.835e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.89254        (-1.58793      1.74215)
R1^2/D10^2  : 2.60085        (-1.01808      2.03082)
kT2 [keV]   : 30.2397        (-5.51143      10.7298)
R2^2/D10^2  : 4.76249E-02    (-0.0309587   0.0540784)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.37 using 59 PHA bins.
# Reduced chi-squared =          1.152 for     55 degrees of freedom 
# Null hypothesis probability =   2.049981e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.657e-08   9.670e-09
25- 50  1.249e-07   1.962e-08
50-150  3.007e-07   1.050e-07
15-150  4.722e-07   1.000e-07

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: 1.69730     ( -0.0991293   0.100225 )
Norm@50keV  : 7.86279E-03    ( -0.000457303   0.000454982 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.96 using 59 PHA bins.
# Reduced chi-squared =          1.034 for     57 degrees of freedom 
# Null hypothesis probability =   4.035844e-01
 
Photon flux (15-150 keV)    in 16.37 sec: 1.04328 ( -0.059758  0.0598594 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.192e-06 ( -7.25268e-08  7.28817e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44117     ( -0.410131   0.304551 )
Epeak [keV] : 106.393      ( -38.9482 -106.394 )
Norm@50keV  : 1.06574E-02    ( -0.00310617   0.00650264 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.62 using 59 PHA bins.
# Reduced chi-squared =          1.029 for     56 degrees of freedom 
# Null hypothesis probability =   4.149974e-01
 
Photon flux (15-150 keV)    in 16.37 sec: 1.02983 ( -0.062794  0.06281 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.1688e-06 ( -8.10773e-08  8.06304e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.846279   ( -6.28923   -1.07859 )
beta        : -1.78637    ( 1.7853   0.134217 )
Epeak [keV] : 30.3914      ( -11.4148 131.717 )
Norm@50keV   : 0.506715    ( -0.503282   430.403 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.94 using 59 PHA bins.
# Reduced chi-squared =          1.017 for     55 degrees of freedom 
# Null hypothesis probability =   4.392469e-01
 
Photon flux (15-150 keV)    in 16.37 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.17092e-06 ( -1.17081e-06  -7.62711e-08 ) ergs/cm2

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

S(25-50 keV)  = 5.96e-07
S(50-100 keV) = 7.05e-07

T90 vs. Hardness ratio plot

T90                                   = 60.9399999976158 sec.
Hardness ratio (energy fluence ratio) = 1.18289

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.29349
Count Ratio (50-100 keV) / (15-25 keV) = 0.814809

Mask shadow pattern

IMX = -8.329529531271376E-01, IMY = 2.345904532161560E-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:
-299.680000 -1.352000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
328.5110  52.3921    2.5  47.4  -26.1   1.8385   4.7 ------	UNKNOWN                       
 13.4967  20.0521    2.4  26.6 -103.4   1.3460   4.9 ------	UNKNOWN                       
309.4889  55.2458    3.0  57.4  -18.7   3.1935   3.9 ------	UNKNOWN                       
349.2306  28.5827    2.9  39.6  -66.2   2.5525   4.0 ------	UNKNOWN

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

Time interval of the image:
-1.352000 15.020600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 41.0981  -2.1628    0.4  40.9 -164.3   1.9746  28.5 ------	UNKNOWN                       
353.8817  34.0637    2.3  33.8  -60.4   0.3648   5.1 ------	UNKNOWN                       
354.0223  18.6402    2.2  41.2  -82.8   0.9321   5.4 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
76.620590 302.461700
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 15.7641 -12.7100    2.7  27.2 -108.5   0.9210   4.3 ------	UNKNOWN                       
  8.8909   2.5056    2.6  32.5  -76.4   1.1738   4.4  554.1	UNKNOWN

Plot creation:
Sun May 31 14:02:20 EDT 2015