batgrbproduct analysis for trigger=353540

batgrbproduct Analysis for Trigger=353540

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): Sun Jan 19 16:25:56 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger353540
======================================================================

  Trigger: 00353540      Segment: 000

  BAT Trigger Time: 265299160   [s; MET]
      Trigger Stop: 265299224   [s; MET]
               UTC: 2009-05-29T14:12:35.217820    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 212.473951892778   Dec: 24.4370020416008  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.87
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.87

  Flight Position:   [ source = BAT ]
    RA: 212.473951892778   Dec: 24.4370020416008  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 212.446004965651   Dec: 24.4544246599303  [deg; J2000]  
        { 14h 09m 47.0s , +24d 27' 15.9" }
         +/- 1.93783428031779 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.07386349598913 [arcmin] (formal 1-sigma fit error)
    SNR: 11.8213219468496
 
  Angular difference between Flight and Ground position is 1.850124 arcmin
 
  Partial Coding Fraction: 0.8359375    [ including projection effects ]

  Duration
     T90: 70.444000005722 +/- 10.3318451633557
        Measured from: -38.2599999904633
                   to: 32.1840000152588     [s; relative to TRIGTIME]
     T50: 32.080000013113 +/- 6.35843503648569
        Measured from: -29.2560000121593
                   to: 2.82400000095367     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -36.8560000061989     
                   to: -35.8560000061989     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -40.5760000050068     
                   to: 39.3000000119209     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.697339   0.785636   0.368785  -0.004287
           0.054406   0.056415   0.049765   0.043314 [error]
 Peak      0.018693   0.042759   0.019196   0.002440
           0.009640   0.010018   0.008202   0.007270 [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 2.27e-07 3.11e-07 3.14e-07 5.75e-07 1.04e-06 1.43e-06   erg/cm2
              Error 2.82e-08 2.73e-08 4.70e-08 1.70e-07 1.09e-07 2.21e-07   erg/cm2
Peak flux Power-law 2.55e-01 2.33e-01 1.47e-01 1.41e-01 6.94e-01 7.76e-01   ph/cm2/s
              Error 1.36e-01 8.53e-02 6.31e-02 1.16e-01 2.50e-01 2.72e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.05e-07 3.51e-07 2.95e-07 1.14e-07 9.35e-07 9.65e-07   erg/cm2
              Error 3.30e-08 3.91e-08 5.78e-08 1.42e-07 1.20e-07 1.87e-07   erg/cm2
Peak flux Cutoff-PL 1.76e-01 3.04e-01 1.58e-01 1.52e-02 6.52e-01 6.53e-01   ph/cm2/s
              Error 1.43e-01 1.23e-01 1.22e-01 8.39e-02 2.49e-01 2.53e-01   ph/cm2/s
 
Fluence        Band 2.02e-07 3.51e-07 2.91e-07 1.95e-07 9.43e-07 1.04e-06   erg/cm2
              Error -------- -------- -------- -------- -------- --------   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    1.986    0.163    -      -           1.41e-03 1.54e-04   54.250 57
CPL   0.870    0.860      42.1   10.0      6.17e-03 9.62e-03   47.860 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.668    0.547    -      -           5.28e-03 1.91e-03   41.980 57
CPL  -1.021    4.527      50.9  -17.9      1.47e-01 1.19e+02   39.410 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   79.876  -40.576   39.300
T90    70.444  -38.260   32.184
T50    32.080  -29.256    2.824
Peak    1.000  -36.856  -35.856

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
  212.4460    24.4544   0.0163    22.7501    27.4811         0.7424399     11.821 TRIG_00353540                 
 
Foreground time interval of the image:
 -7.299  39.300 (delta_t =  46.599 [sec])
Background time interval of the image:

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

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)

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  -40.576 sec. to   39.300 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.98647     ( -0.159462   0.16692 )
Norm@50keV  : 1.40865E-03    ( -0.000155204   0.000152554 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.25 using 59 PHA bins.
# Reduced chi-squared =         0.9517 for     57 degrees of freedom 
# Null hypothesis probability =   5.789985e-01
 
Photon flux (15-150 keV)    in 79.88 sec: 0.209993 ( -0.01838  0.0183858 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.03698e-06 ( -1.07641e-07  1.09593e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -40.576 sec. to   39.300 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.870296     ( -0.94146   0.779104 )
Epeak [keV] : 42.0659      ( -8.45313 11.4873 )
Norm@50keV  : 6.16840E-03    ( -0.00393141   0.0153035 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.86 using 59 PHA bins.
# Reduced chi-squared =         0.8546 for     56 degrees of freedom 
# Null hypothesis probability =   7.722419e-01
 
Photon flux (15-150 keV)    in 79.88 sec: 0.200870 ( -0.019271  0.019344 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.34612e-07 ( -1.14899e-07  1.24589e-07 ) ergs/cm2

Band function

Time interval is from  -40.576 sec. to   39.300 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.798418   ( -0.831122   1.15117 )
beta        : -3.24523    ( 3.22108   1.04078 )
Epeak [keV] : 41.7287      ( -8.51914 9.99591 )
Norm@50keV   : 6.75391E-03    ( -0.00209469   0.0296297 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.75 using 59 PHA bins.
# Reduced chi-squared =         0.8681 for     55 degrees of freedom 
# Null hypothesis probability =   7.454894e-01
 
Photon flux (15-150 keV)    in 79.88 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.43031e-07 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.3849  (-0.955224  1.05126)
R^2/D10^2   : 8.57867E-02  (-0.0265115   0.0382939)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.40 using 59 PHA bins.
# Reduced chi-squared =          1.077 for     57 degrees of freedom 
# Null hypothesis probability =   3.213795e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.523e-07   2.269e-08
25- 50  3.990e-07   4.481e-08
50-150  2.321e-07   5.384e-08
15-150  7.834e-07   8.959e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 65.9922       (-15.4677      23.001)
Norm        : 1.05980       (-0.14287     0.160746)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.68 using 59 PHA bins.
# Reduced chi-squared =         0.8541 for     57 degrees of freedom 
# Null hypothesis probability =   7.754969e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.157e-07   2.660e-08
25- 50  3.376e-07   3.075e-08
50-150  4.147e-07   1.001e-07
15-150  9.681e-07   1.086e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.69621        (-1.4201      2.40637)
R1^2/D10^2  : 2.36365        (-2.02297      9.79708)
kT2 [keV]   : 12.7754        (-1.77804      3.49034)
R2^2/D10^2  : 3.37430E-02    (-0.0229313   0.0189558)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.20 using 59 PHA bins.
# Reduced chi-squared =         0.8583 for     55 degrees of freedom 
# Null hypothesis probability =   7.633752e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.089e-07   9.264e-08
25- 50  3.484e-07   1.060e-07
50-150  3.223e-07   1.245e-07
15-150  8.796e-07   2.395e-07

Peak spectrum fit

Power-law model

Time interval is from  -36.856 sec. to  -35.856 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.66761     ( -0.535227   0.558611 )
Norm@50keV  : 5.28258E-03    ( -0.00192681   0.00190113 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.98 using 59 PHA bins.
# Reduced chi-squared =         0.7365 for     57 degrees of freedom 
# Null hypothesis probability =   9.318042e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.693735 ( -0.248982  0.251157 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.90556e-08 ( -1.81736e-08  1.85939e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from  -36.856 sec. to  -35.856 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.02097     ( -5.89008   3.16294 )
Epeak [keV] : 50.8860      ( -14.8141 -50.6802 )
Norm@50keV  : 0.147013    ( -0.158711   237.966 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.41 using 59 PHA bins.
# Reduced chi-squared =         0.7038 for     56 degrees of freedom 
# Null hypothesis probability =   9.546267e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.651781 ( -0.24417  0.253898 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.24843e-08 ( -1.64645e-08  1.96517e-08 ) ergs/cm2

Band function

Time interval is from  -36.856 sec. to  -35.856 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -12.0221   -5 )
beta        : -2.26834    ( 2.26845   0.805775 )
Epeak [keV] : 33.9281      ( -17.3148 16.221 )
Norm@50keV   : 112.667    ( -37.2233   9958.37 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.24 using 59 PHA bins.
# Reduced chi-squared =         0.7134 for     55 degrees of freedom 
# Null hypothesis probability =   9.464739e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.49693e-08 ( -4.49623e-08  -1.82266e-08 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.7923  (-3.54557  5.12671)
R^2/D10^2   : 0.151119  (-0.151117   0.344315)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.48 using 59 PHA bins.
# Reduced chi-squared =         0.6927 for     57 degrees of freedom 
# Null hypothesis probability =   9.626911e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.245e-09   3.372e-09
25- 50  1.775e-08   1.108e-08
50-150  1.819e-08   1.252e-08
15-150  4.119e-08   2.729e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 121.849       (-75.9666      -120.124)
Norm        : 3.03723       (-1.15609     1.78957)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.07 using 59 PHA bins.
# Reduced chi-squared =         0.7205 for     57 degrees of freedom 
# Null hypothesis probability =   9.446887e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.906e-09   4.813e-09
25- 50  1.418e-08   8.890e-09
50-150  2.550e-08   1.769e-08
15-150  4.758e-08   3.054e-08

Double BB

R1^2/D10^2  : 0.180136        (      )
kT2 [keV]   : 200.000        (      )
R2^2/D10^2  : 2.23253E-05    (-2.23256e-05   -2.23256e-05)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.29 using 59 PHA bins.
#Fit statistic : Chi-Squared =          39.27 using 59 PHA bins.
#Fit statistic : Chi-Squared =          39.25 using 59 PHA bins.
# Reduced chi-squared =         0.7144 for     55 degrees of freedom 
# Reduced chi-squared =         0.7140 for     55 degrees of freedom 
# Reduced chi-squared =         0.7136 for     55 degrees of freedom 
# Null hypothesis probability =   9.457160e-01
# Null hypothesis probability =   9.460320e-01
# Null hypothesis probability =   9.462871e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.643e-09   3.742e-09
25- 50  1.763e-08   1.218e-08
50-150  2.143e-08   1.985e-08
15-150  4.471e-08   3.712e-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: 1.98479     ( -0.256096   0.277694 )
Norm@50keV  : 8.83110E-04    ( -0.000167551   0.00016293 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.06 using 59 PHA bins.
# Reduced chi-squared =         0.9659 for     57 degrees of freedom 
# Null hypothesis probability =   5.483940e-01
 
Photon flux (15-150 keV)    in 46.6 sec: 0.131549 ( -0.0186575  0.0186578 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.79229e-07 ( -6.6666e-08  6.91241e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.897191     ( -1.44024   1.10351 )
Epeak [keV] : 41.4121      (   )
Norm@50keV  : 3.82489E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.35 using 59 PHA bins.
# Reduced chi-squared =         0.9348 for     56 degrees of freedom 
# Null hypothesis probability =   6.137728e-01
 
Photon flux (15-150 keV)    in 46.6 sec: 0.127185 ( -0.018948  0.019065 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.43428e-07 ( -6.58616e-08  7.54771e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.956711   ( 0.956711   0.956711 )
beta        : -8.34793    ( 5.58026   15.5802 )
Epeak [keV] : 41.4010      ( -41.401 50.286 )
Norm@50keV   : 3.53836E-03    ( -0.00222819   874.919 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.36 using 59 PHA bins.
# Reduced chi-squared =         0.9520 for     55 degrees of freedom 
# Null hypothesis probability =   5.762138e-01
 
Photon flux (15-150 keV)    in 46.6 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

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

S(25-50 keV)  = 3.11e-07
S(50-100 keV) = 3.14e-07

T90 vs. Hardness ratio plot

T90                                   = 70.444000005722 sec.
Hardness ratio (energy fluence ratio) = 1.00965

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.12662
Count Ratio (50-100 keV) / (15-25 keV) = 0.528846

Mask shadow pattern

IMX = 3.720201844102486E-01, IMY = -1.935054301786858E-01

TIME vs. PHA plot around the trigger time

TIME vs. DetID plot around the trigger time

100 us light curve (15-350 keV)

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:

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

Time interval of the image:
-7.299400 39.300000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
185.0289 -16.4569    2.3  33.6  148.7   0.5008   5.1 ------	UNKNOWN                       
212.4460  24.4544    1.0  22.8   27.5   0.7425  11.8 ------	UNKNOWN                       
159.1174  18.5193    2.5  29.0 -121.1   0.4004   4.6 ------	UNKNOWN                       
178.3701  49.1574    2.6  33.6  -52.3   0.3845   4.4 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
186.300590 963.080000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4594  35.2587   36.2  37.7   12.0  -0.1720  -0.3    5.0	Her X-1                       
280.3165  52.6396    2.7  57.5   -9.5   7.8918   4.3 ------	UNKNOWN                       
246.1746  63.6535    2.9  45.0  -30.9   2.8697   3.9 ------	UNKNOWN

Plot creation:
Sun May 31 03:56:32 EDT 2015