batgrbproduct analysis for trigger=411412

batgrbproduct Analysis for Trigger=411412

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): Fri Jan 17 20:03:46 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger411412
======================================================================

  Trigger: 00411412      Segment: 000

  BAT Trigger Time: 287155810.88   [s; MET]
      Trigger Stop: 287155811.008   [s; MET]
               UTC: 2010-02-06T13:30:05.374220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 47.1767399510983   Dec: 13.1679638316509  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    14.02
     Image Trigger?:     NO
     Rate S/N Ratio:     58.1807528311554  [ if not an image trigger ]
     Image S/N Ratio:    14.02

  Flight Position:   [ source = BAT ]
    RA: 47.1767399510983   Dec: 13.1679638316509  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 47.1669509745934   Dec: 13.1751876750513  [deg; J2000]  
        { 03h 08m 40.1s , +13d 10' 30.7" }
         +/- 1.4678010425001 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.610461438752174 [arcmin] (formal 1-sigma fit error)
    SNR: 17.5801425260764
 
  Angular difference between Flight and Ground position is 0.717577 arcmin
 
  Partial Coding Fraction: 0.515625    [ including projection effects ]

  Duration
     T90: 0.115999937057495 +/- 0.0178885800721685
        Measured from: -0.00400000810623169
                   to: 0.111999928951263     [s; relative to TRIGTIME]
     T50: 0.0559999942779541 +/- 0.0113136892801003
        Measured from: 0.0199999809265137
                   to: 0.0759999752044678     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.439999997615814     
                   to: 0.560000002384186     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.00800001621246338     
                   to: 0.124000012874603     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.025114   0.048796   0.067208   0.029876
           0.003741   0.004978   0.005945   0.005325 [error]
 Peak      0.034191   0.057058   0.065609   0.027389
           0.007691   0.008843   0.009264   0.009815 [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 6.25e-09 1.97e-08 5.11e-08 3.81e-07 1.39e-07 4.58e-07   erg/cm2
              Error 1.27e-09 2.38e-09 5.29e-09 9.41e-08 1.51e-08 9.67e-08   erg/cm2
Peak flux Power-law 2.57e-01 3.97e-01 4.59e-01 1.02e+00 1.41e+00 2.13e+00   ph/cm2/s
              Error 8.50e-02 7.78e-02 7.27e-02 3.78e-01 2.10e-01 3.97e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.21e-09 1.97e-08 5.12e-08 3.81e-07 1.39e-07 4.58e-07   erg/cm2
              Error 1.44e-09 1.95e-09 6.03e-09 1.38e-07 1.54e-08 1.37e-07   erg/cm2
Peak flux Cutoff-PL 2.60e-01 3.99e-01 4.58e-01 1.00e+00 1.41e+00 2.12e+00   ph/cm2/s
              Error 8.50e-02 7.86e-02 7.73e-02 -------- 2.10e-01 5.28e-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    0.627    0.170    -      -           8.34e-02 8.18e-03   42.920 57
CPL   0.610    0.172    9950.3    0.0      8.40e-02 4.33e-02   42.930 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.789    0.279    -      -           1.23e-02 1.86e-03   64.980 57
CPL   0.790    0.282    9999.4    0.0      1.24e-02 1.45e-02   64.990 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: 0.128000 sec.
T50 in the 50-300 keV band: 0.064000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.132   -0.008    0.124
T90     0.116   -0.004    0.112
T50     0.056    0.020    0.076
Peak    1.000   -0.440    0.560

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
   47.1670    13.1752   0.0110    26.1735    65.3971         0.1703270     17.580 TRIG_00411412                 
 
Foreground time interval of the image:
 -0.008   0.124 (delta_t =   0.132 [sec])
Background time interval of the image:
-149.379  -0.008 (delta_t = 149.371 [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   -0.008 sec. to    0.124 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.627115     ( -0.17249   0.167256 )
Norm@50keV  : 8.33937E-02    ( -0.0082124   0.00815019 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.92 using 59 PHA bins.
# Reduced chi-squared =         0.7530 for     57 degrees of freedom 
# Null hypothesis probability =   9.165668e-01
 
Photon flux (15-150 keV)    in 0.132 sec: 9.70613 ( -0.92068  0.920833 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.38964e-07 ( -1.5095e-08  1.51787e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.008 sec. to    0.124 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.610019     ( -0.165764   0.177529 )
Epeak [keV] : 9950.29      ( -9911.52 -9911.52 )
Norm@50keV  : 8.39804E-02    ( -0.00805028   0.0785382 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.93 using 59 PHA bins.
# Reduced chi-squared =         0.7665 for     56 degrees of freedom 
# Null hypothesis probability =   9.002256e-01
 
Photon flux (15-150 keV)    in 0.132 sec: 9.69883 ( -0.91743  0.92907 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.39271e-07 ( -1.57976e-08  1.49186e-08 ) ergs/cm2

Band function

Time interval is from   -0.008 sec. to    0.124 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.00225   ( 1.00223   1.00223 )
beta        : -0.627115    ( -0.167153   0.172652 )
Epeak [keV] : 17.5418      ( -17.5419 -17.5419 )
Norm@50keV   : 0.110273    ( -0.0349713   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.92 using 59 PHA bins.
# Reduced chi-squared =         0.7804 for     55 degrees of freedom 
# Null hypothesis probability =   8.817929e-01
 
Photon flux (15-150 keV)    in 0.132 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]    : 28.0544  (-3.9156  5.00769)
R^2/D10^2   : 0.184559  (-0.0667522   0.0967438)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.82 using 59 PHA bins.
# Reduced chi-squared =          1.032 for     57 degrees of freedom 
# Null hypothesis probability =   4.086437e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.123e-09   6.112e-10
25- 50  1.872e-08   2.818e-09
50-150  1.065e-07   1.773e-08
15-150  1.283e-07   1.832e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 32.5683       (-3.5152     3.51525)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         113.17 using 59 PHA bins.
# Reduced chi-squared =         1.9855 for     57 degrees of freedom 
# Null hypothesis probability =   1.388448e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.070e-08   5.947e-09
25- 50  2.058e-08   1.138e-08
50-150  4.514e-08   2.457e-08
15-150  7.642e-08   4.224e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.78225        (-3.98053      6.05544)
R1^2/D10^2  : 1.84731        (-1.26127      7.04761)
kT2 [keV]   : 49.4169        (-15.9251      -49.4169)
R2^2/D10^2  : 3.53114E-02    (-0.0274294   0.0678419)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.54 using 59 PHA bins.
# Reduced chi-squared =         0.7735 for     55 degrees of freedom 
# Null hypothesis probability =   8.900249e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.969e-09   3.213e-09
25- 50  2.040e-08   9.992e-09
50-150  1.148e-07   6.078e-08
15-150  1.411e-07   7.333e-08

Peak spectrum fit

Power-law model

Time interval is from   -0.440 sec. to    0.560 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.788627     ( -0.288334   0.270425 )
Norm@50keV  : 1.22994E-02    ( -0.00186797   0.00184657 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.98 using 59 PHA bins.
# Reduced chi-squared =          1.140 for     57 degrees of freedom 
# Null hypothesis probability =   2.186440e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.41421 ( -0.2097  0.210091 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.44423e-07 ( -2.38521e-08  2.41644e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.440 sec. to    0.560 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.790027     ( -0.296726   0.266942 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 1.23805E-02    ( -0.0123811   0.0165306 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.99 using 59 PHA bins.
# Reduced chi-squared =          1.161 for     56 degrees of freedom 
# Null hypothesis probability =   1.921654e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.41478 ( -0.21076  0.20913 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.44498e-07 ( -2.4401e-08  2.3974e-08 ) ergs/cm2

Band function

Time interval is from   -0.440 sec. to    0.560 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.885390   ( 0.88539   0.88539 )
beta        : -0.788627    ( -0.270352   0.288334 )
Epeak [keV] : 15.3052      ( -15.3052 -15.3052 )
Norm@50keV   : 1.75889E-02    ( -0.00711004   201774 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.98 using 59 PHA bins.
# Reduced chi-squared =          1.181 for     55 degrees of freedom 
# Null hypothesis probability =   1.680247e-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]    : 26.2308  (-5.91743  8.77034)
R^2/D10^2   : 3.04650E-02  (-0.0167629   0.0341783)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.85 using 59 PHA bins.
# Reduced chi-squared =          1.313 for     57 degrees of freedom 
# Null hypothesis probability =   5.650568e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.548e-09   1.187e-09
25- 50  2.061e-08   5.840e-09
50-150  1.043e-07   3.409e-08
15-150  1.284e-07   3.559e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 5.31799       (-0.854755     0.853394)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          85.19 using 59 PHA bins.
# Reduced chi-squared =          1.495 for     57 degrees of freedom 
# Null hypothesis probability =   9.150505e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.332e-08   7.655e-09
25- 50  2.563e-08   1.439e-08
50-150  5.621e-08   3.172e-08
15-150  9.517e-08   5.370e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.01656        (-3.15798      4.92067)
R1^2/D10^2  : 0.464902        (-0.341155      0.817664)
kT2 [keV]   : 52.9030        (-52.6453      -52.6454)
R2^2/D10^2  : 4.01071E-03    (-0.00371681   0.0124491)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.03 using 59 PHA bins.
# Reduced chi-squared =          1.146 for     55 degrees of freedom 
# Null hypothesis probability =   2.135906e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.538e-09   4.893e-09
25- 50  2.428e-08   1.279e-08
50-150  1.166e-07   6.460e-08
15-150  1.494e-07   7.720e-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: 0.627115     ( -0.17249   0.167256 )
Norm@50keV  : 8.33937E-02    ( -0.0082124   0.00815019 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.92 using 59 PHA bins.
# Reduced chi-squared =         0.7530 for     57 degrees of freedom 
# Null hypothesis probability =   9.165668e-01
 
Photon flux (15-150 keV)    in 0.132 sec: 9.70613 ( -0.92068  0.920833 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.38964e-07 ( -1.5095e-08  1.51787e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.610019     ( -0.165764   0.177529 )
Epeak [keV] : 9950.29      ( -9911.52 -9911.52 )
Norm@50keV  : 8.39804E-02    ( -0.00805028   0.0785382 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.93 using 59 PHA bins.
# Reduced chi-squared =         0.7665 for     56 degrees of freedom 
# Null hypothesis probability =   9.002256e-01
 
Photon flux (15-150 keV)    in 0.132 sec: 9.69883 ( -0.91743  0.92907 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.39271e-07 ( -1.57976e-08  1.49186e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.00225   ( 1.00223   1.00223 )
beta        : -0.627115    ( -0.167153   0.172652 )
Epeak [keV] : 17.5418      ( -17.5419 -17.5419 )
Norm@50keV   : 0.110273    ( -0.0349713   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.92 using 59 PHA bins.
# Reduced chi-squared =         0.7804 for     55 degrees of freedom 
# Null hypothesis probability =   8.817929e-01
 
Photon flux (15-150 keV)    in 0.132 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)  = 1.97e-08
S(50-100 keV) = 5.11e-08

T90 vs. Hardness ratio plot

T90                                   = 0.115999937057495 sec.
Hardness ratio (energy fluence ratio) = 2.59391

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.94298
Count Ratio (50-100 keV) / (15-25 keV) = 2.67612

Mask shadow pattern

IMX = 2.046195840359602E-01, IMY = -4.468679014868768E-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:
-149.379410 -0.008000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 20.2070   9.2229    3.1  10.8  -16.6   0.5715   3.7 ------	UNKNOWN                       
347.0684   1.2979    2.7  37.7  -79.3   2.1279   4.3 ------	UNKNOWN                       
342.7640  11.4663    3.3  43.4  -64.7   2.8057   3.5 ------	UNKNOWN

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

Time interval of the image:
-0.008000 0.124000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 47.1670  13.1752    0.7  26.2   65.4   0.1703  17.6 ------	UNKNOWN                       
  2.2508  14.1606    2.3  26.7  -47.7   0.0365   5.0 ------	UNKNOWN                       
357.3409  34.2604    2.3  43.2  -25.8   0.0525   4.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
58.820600 962.193200
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6382  22.0133    0.5  35.8   86.5  36.8015  25.4    0.3	Crab                          
 38.8401  45.7349    3.0  33.3    5.4   2.6194   3.8 ------	UNKNOWN                       
358.4001  24.0951    2.8  47.2  -53.3  11.5778   4.1 ------	UNKNOWN

Plot creation:
Sun May 31 02:16:17 EDT 2015