batgrbproduct analysis for trigger=349510

batgrbproduct Analysis for Trigger=349510

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 17:34:51 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger349510
======================================================================

  Trigger: 00349510      Segment: 000

  BAT Trigger Time: 261745664.896   [s; MET]
      Trigger Stop: 261745665.92   [s; MET]
               UTC: 2009-04-18T11:07:40.226940    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 269.33377128532   Dec: 33.4087902749121  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.16
     Image Trigger?:     NO
     Rate S/N Ratio:     16.9410743460974  [ if not an image trigger ]
     Image S/N Ratio:    8.16

  Flight Position:   [ source = BAT ]
    RA: 269.33377128532   Dec: 33.4087902749121  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 269.323254645023   Dec: 33.4019003755011  [deg; J2000]  
        { 17h 57m 17.6s , +33d 24' 06.8" }
         +/- 1.39083934822275 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.48397082612143 [arcmin] (formal 1-sigma fit error)
    SNR: 18.9861538595861
 
  Angular difference between Flight and Ground position is 0.669601 arcmin
 
  Partial Coding Fraction: 0.3164062    [ including projection effects ]

  Duration
     T90: 56.3039999902248 +/- 4.06127123381587
        Measured from: -2.99199998378754
                   to: 53.3120000064373     [s; relative to TRIGTIME]
     T50: 31.7880000174046 +/- 2.77223376513962
        Measured from: 11.1599999964237
                   to: 42.9480000138283     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.0640000104904175     
                   to: 1.06400001049042     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -8.27599999308586     
                   to: 61.1319999992847     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.603487   2.428561   2.093321   0.763986
           0.071250   0.076223   0.071300   0.063777 [error]
 Peak      0.045605   0.071339   0.076050   0.035811
           0.010886   0.012243   0.011763   0.010154 [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 5.20e-07 1.06e-06 1.68e-06 5.90e-06 4.66e-06 9.15e-06   erg/cm2
              Error 3.77e-08 4.44e-08 7.03e-08 5.76e-07 1.75e-07 6.10e-07   erg/cm2
Peak flux Power-law 5.39e-01 6.13e-01 5.01e-01 6.83e-01 1.90e+00 2.34e+00   ph/cm2/s
              Error 1.63e-01 1.14e-01 9.26e-02 2.66e-01 3.16e-01 3.82e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.21e-07 1.06e-06 1.68e-06 5.84e-06 4.66e-06 9.09e-06   erg/cm2
              Error 3.89e-08 4.42e-08 6.65e-08 9.29e-07 1.74e-07 8.44e-07   erg/cm2
Peak flux Cutoff-PL 5.21e-01 6.06e-01 5.01e-01 6.97e-01 1.90e+00 2.34e+00   ph/cm2/s
              Error 1.38e-01 1.22e-01 1.04e-01 -------- 3.19e-01 4.84e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   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    1.336    0.066    -      -           6.85e-03 2.41e-04   46.820 57
CPL   1.335    0.074    9998.5    0.0      6.87e-03 5.48e-04   46.860 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.293    0.277    -      -           1.60e-02 2.54e-03   49.810 57
CPL   1.289    1.693    9993.5    0.0      1.60e-02 1.89e-02   49.810 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: 51.264000 sec.
T50 in the 50-300 keV band: 30.976000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   69.408   -8.276   61.132
T90    56.304   -2.992   53.312
T50    31.788   11.160   42.948
Peak    1.000    0.064    1.064

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
  269.3233    33.4019   0.0101    46.3251     1.7944         1.8105231     18.986 TRIG_00349510                 
 
Foreground time interval of the image:
 -8.276  12.405 (delta_t =  20.681 [sec])
Background time interval of the image:
-239.896  -8.276 (delta_t = 231.620 [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

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   -8.276 sec. to   61.132 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.33560     ( -0.066258   0.0660167 )
Norm@50keV  : 6.84610E-03    ( -0.000241019   0.000240979 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.82 using 59 PHA bins.
# Reduced chi-squared =         0.8214 for     57 degrees of freedom 
# Null hypothesis probability =   8.298838e-01
 
Photon flux (15-150 keV)    in 69.41 sec: 0.822353 ( -0.0313726  0.0314908 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.65627e-06 ( -1.75099e-07  1.75573e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -8.276 sec. to   61.132 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.33506     ( -0.0825343   0.0644972 )
Epeak [keV] : 9998.47      ( -9999.27 -9999.27 )
Norm@50keV  : 6.86963E-03    ( -0.000241611   0.000853848 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.86 using 59 PHA bins.
# Reduced chi-squared =         0.8367 for     56 degrees of freedom 
# Null hypothesis probability =   8.029564e-01
 
Photon flux (15-150 keV)    in 69.41 sec: 0.822687 ( -0.032068  0.030759 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.65565e-06 ( -1.73463e-07  1.74413e-07 ) ergs/cm2

Band function

Time interval is from   -8.276 sec. to   61.132 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.98477   ( -4.98477   -4.98477 )
beta        : -1.35141    ( -0.068825   0.0684786 )
Epeak [keV] : 22.1556      ( -22.1556 3.84242 )
Norm@50keV   : 1250.74    ( -43.9592   2.1119e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.47 using 59 PHA bins.
# Reduced chi-squared =         0.8268 for     55 degrees of freedom 
# Null hypothesis probability =   8.165686e-01
 
Photon flux (15-150 keV)    in 69.41 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]    : 18.4303  (  )
R^2/D10^2   : 4.61961E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         253.82 using 59 PHA bins.
# Reduced chi-squared =         4.4530 for     57 degrees of freedom 
# Null hypothesis probability =   1.191335e-26
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.164e-07   1.524e-08
25- 50  1.018e-06   5.171e-08
50-150  2.525e-06   1.510e-07
15-150  3.760e-06   1.517e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 3.45434       (-0.122688     0.122639)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          88.51 using 59 PHA bins.
# Reduced chi-squared =          1.553 for     57 degrees of freedom 
# Null hypothesis probability =   4.727045e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.972e-07   2.485e-08
25- 50  1.149e-06   4.512e-08
50-150  2.520e-06   1.065e-07
15-150  4.266e-06   1.583e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.45129        (-0.902042      0.967742)
R1^2/D10^2  : 0.445882        (-0.132065      0.204266)
kT2 [keV]   : 38.0385        (-5.46621      8.35804)
R2^2/D10^2  : 3.56179E-03    (-0.00156593   0.00225211)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.33 using 59 PHA bins.
# Reduced chi-squared =         0.7878 for     55 degrees of freedom 
# Null hypothesis probability =   8.724513e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.629e-07   5.449e-08
25- 50  1.119e-06   9.266e-08
50-150  3.133e-06   4.939e-07
15-150  4.714e-06   6.053e-07

Peak spectrum fit

Power-law model

Time interval is from    0.064 sec. to    1.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.29276     ( -0.278403   0.274986 )
Norm@50keV  : 1.59595E-02    ( -0.00253942   0.00253922 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.81 using 59 PHA bins.
# Reduced chi-squared =         0.8739 for     57 degrees of freedom 
# Null hypothesis probability =   7.390478e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.90150 ( -0.314897  0.316154 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.5799e-07 ( -2.73426e-08  2.75224e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.064 sec. to    1.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.28879     ( -0.996924   2.38837 )
Epeak [keV] : 9993.55      (   )
Norm@50keV  : 1.60288E-02    ( -0.00255043   0.0352646 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.81 using 59 PHA bins.
# Reduced chi-squared =         0.8895 for     56 degrees of freedom 
# Null hypothesis probability =   7.067784e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.90309 ( -0.32479  0.31359 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.57738e-07 ( -2.8135e-08  2.7778e-08 ) ergs/cm2

Band function

Time interval is from    0.064 sec. to    1.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.56741   ( -4.56741   -4.56741 )
beta        : -1.37060    ( -0.332036   0.309373 )
Epeak [keV] : 26.3861      ( -26.3861 9.33327 )
Norm@50keV   : 501.564    ( -79.5878   6.50433e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.26 using 59 PHA bins.
# Reduced chi-squared =         0.8957 for     55 degrees of freedom 
# Null hypothesis probability =   6.925687e-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]    : 18.4296  (-3.93022  5.40867)
R^2/D10^2   : 0.110970  (-0.0633712   0.138489)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.24 using 59 PHA bins.
# Reduced chi-squared =          1.074 for     57 degrees of freedom 
# Null hypothesis probability =   3.263892e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.488e-09   2.773e-09
25- 50  3.524e-08   9.220e-09
50-150  8.738e-08   2.907e-08
15-150  1.301e-07   3.195e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 7.93035       (-1.27925     1.27911)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.64 using 59 PHA bins.
# Reduced chi-squared =         0.9235 for     57 degrees of freedom 
# Null hypothesis probability =   6.391802e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.975e-08   1.130e-08
25- 50  3.799e-08   2.145e-08
50-150  8.332e-08   4.654e-08
15-150  1.411e-07   7.930e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.39859        (-3.1625      5.08883)
R1^2/D10^2  : 1.55010        (-1.24407      11.1006)
kT2 [keV]   : 33.4562        (-11.7817      89.6123)
R2^2/D10^2  : 1.31808E-02    (-0.0125996   0.0186115)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.56 using 59 PHA bins.
# Reduced chi-squared =         0.9011 for     55 degrees of freedom 
# Null hypothesis probability =   6.817727e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.654e-08   9.645e-09
25- 50  3.574e-08   1.885e-08
50-150  1.085e-07   6.075e-08
15-150  1.608e-07   8.325e-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: 1.10706     ( -0.15384   0.1492 )
Norm@50keV  : 5.99134E-03    ( -0.000518424   0.000515168 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.64 using 59 PHA bins.
# Reduced chi-squared =         0.8534 for     57 degrees of freedom 
# Null hypothesis probability =   7.767177e-01
 
Photon flux (15-150 keV)    in 20.68 sec: 0.695445 ( -0.0633153  0.0636788 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.29252e-06 ( -1.12673e-07  1.12946e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.10435     ( -0.157253   0.148192 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 6.02153E-03    ( -0.000514105   0.00335418 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.66 using 59 PHA bins.
# Reduced chi-squared =         0.8689 for     56 degrees of freedom 
# Null hypothesis probability =   7.463365e-01
 
Photon flux (15-150 keV)    in 20.68 sec: 0.696243 ( -0.064268  0.062631 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.2924e-06 ( -1.12208e-07  1.12933e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -5   -5 )
beta        : -1.18807    ( -0.173956   0.171167 )
Epeak [keV] : 28.1096      ( -8.1813 5.62884 )
Norm@50keV   : 228.137    ( -18.9596   1513.71 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.35 using 59 PHA bins.
# Reduced chi-squared =         0.8246 for     55 degrees of freedom 
# Null hypothesis probability =   8.200081e-01
 
Photon flux (15-150 keV)    in 20.68 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)  = 1.06e-06
S(50-100 keV) = 1.68e-06

T90 vs. Hardness ratio plot

T90                                   = 56.3039999902248 sec.
Hardness ratio (energy fluence ratio) = 1.58491

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.51455
Count Ratio (50-100 keV) / (15-25 keV) = 1.30548

Mask shadow pattern

IMX = 1.046845803546415E+00, IMY = -3.279586319138547E-02

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:
-239.896000 -8.276000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4233  35.2468    2.9  35.1   10.2   0.9612   4.0    6.0	Her X-1

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

Time interval of the image:
-8.276000 12.404600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3512  35.2436    5.6  35.1   10.2   0.1304   2.1    7.9	Her X-1                       
269.3232  33.4019    0.6  46.3    1.8   1.8104  19.0 ------	UNKNOWN                       
133.1965  71.2880    2.6  41.9 -110.8   0.8039   4.5 ------	UNKNOWN                       
172.9180  87.0764    2.6  40.7  -85.6   0.8177   4.6 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
82.204600 962.191300
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4535  35.3185    1.2  12.4  128.2   5.2389   9.9    1.5	Her X-1                       
268.2951  -1.4152    3.5  34.8   26.9   2.3607   3.3    4.9	SW J1753.5-0127               
273.9679 -14.0384    3.4  47.6   19.0   4.5316   3.4    2.2	GX 17+2                       
288.8005  10.9412    0.7  28.7  -17.9   9.1199  17.3    0.3	GRS 1915+105                  
299.5890  35.2031    0.3  25.0  -77.6  31.1693  44.6    0.1	Cyg X-1                       
308.1387  40.9668    1.7  31.6  -90.2   5.8738   6.8    1.5	Cyg X-3                       
255.8585   2.7537    3.1  33.1   50.3   3.4058   3.7 ------	UNKNOWN                       
182.5413  74.0939    4.2  57.2 -173.9   7.9952   2.8 ------	UNKNOWN                       
167.7609  80.1701    3.2  59.1 -166.1  13.8498   3.6 ------	UNKNOWN                       
304.1841  13.8823    3.1  37.1  -41.6   2.6620   3.7 ------	UNKNOWN                       
317.5470  19.8270    2.6  44.8  -59.8  11.9337   4.4 ------	UNKNOWN

Plot creation:
Sun May 31 04:25:15 EDT 2015