batgrbproduct analysis for trigger=306323

batgrbproduct Analysis for Trigger=306323

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): Mon Oct  5 14:41:23 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger306323
======================================================================

  Trigger: 00306323      Segment: 000

  BAT Trigger Time: 227240704   [s; MET]
      Trigger Stop: 227240768   [s; MET]
               UTC: 2008-03-15T02:25:01.356140    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 155.181603570327   Dec: 41.7290018673236  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.51
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.51

  Flight Position:   [ source = BAT ]
    RA: 155.181603570327   Dec: 41.7290018673236  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 155.112593553519   Dec: 41.6772078380079  [deg; J2000]  
        { 10h 20m 27.0s , +41d 40' 37.9" }
         +/- 3.27121754076449 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.33876906995558 [arcmin] (formal 1-sigma fit error)
    SNR: 5.59524618192219
 
  Angular difference between Flight and Ground position is 4.383386 arcmin
 
  Partial Coding Fraction: 0.984375    [ including projection effects ]

  Duration
     T90: N/A +/- N/A
        Measured from: N/A
                   to: N/A     [s; relative to TRIGTIME]
     T50: N/A +/- N/A
        Measured from: N/A
                   to: N/A     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.154221   0.137474   0.022719  -0.008217
           0.034180   0.035498   0.031539   0.028292 [error]
 Peak      0.154221   0.137474   0.022719  -0.008217
           0.034180   0.035498   0.031539   0.028292 [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 3.64e-08 4.35e-08 3.76e-08 5.55e-08 1.37e-07 1.77e-07   erg/cm2
              Error 1.33e-08 1.54e-08 2.23e-08 7.05e-08 5.61e-08 9.65e-08   erg/cm2
Peak flux Power-law 1.85e-02 1.24e-02 5.39e-03 3.23e-03 3.79e-02 3.95e-02   ph/cm2/s
              Error 6.88e-03 4.26e-03 3.07e-03 3.79e-03 1.23e-02 1.33e-02   ph/cm2/s
 
Fluence   Cutoff-PL 3.75e-08 6.46e-08 1.14e-09 1.18e-15 1.03e-07 1.03e-07   erg/cm2
              Error 1.44e-08 2.17e-08 6.04e-09 1.85e-11 2.95e-08 2.95e-08   erg/cm2
Peak flux Cutoff-PL 1.78e-02 1.99e-02 2.07e-04 1.10e-10 3.79e-02 3.79e-02   ph/cm2/s
              Error 7.06e-03 6.75e-03 1.01e-03 1.68e-06 1.02e-02 1.02e-02   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    2.177    0.546    -      -           2.32e-04 1.04e-04   63.240 57
CPL -10.000    0.000      28.1    0.0      9.52e+04 0.00e+00   51.060 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.177    0.546    -      -           2.32e-04 1.04e-04   63.240 57
CPL -10.000    0.000      28.1    0.0      9.52e+04 0.00e+00   51.060 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     N/A      N/A     N/A
T90      N/A      N/A     N/A
T50      N/A      N/A     N/A
Peak     N/A      N/A     N/A

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
  155.1126    41.6772   0.0344    15.8722    15.4159         0.3813305      5.595 TRIG_00306323                 
 
Foreground time interval of the image:
  0.000  64.000 (delta_t =  64.000 [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

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

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 64.000000

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 64.000000

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    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.17730     ( -0.515333   0.576184 )
Norm@50keV  : 2.32142E-04    ( -0.000103919   0.000103692 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.24 using 59 PHA bins.
# Reduced chi-squared =          1.110 for     57 degrees of freedom 
# Null hypothesis probability =   2.654480e-01
 
Photon flux (15-150 keV)    in 64 sec: 3.79019E-02 ( -0.0122584  0.0124259 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.36964e-07 ( -5.35272e-08  5.85946e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -10.0000     (     )
Epeak [keV] : 28.0572      (   )
Norm@50keV  : 9.52286E+04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.06 using 59 PHA bins.
# Reduced chi-squared =         0.9119 for     56 degrees of freedom 
# Null hypothesis probability =   6.617619e-01
 
Photon flux (15-150 keV)    in 64 sec: 3.81040E-02 3.78770E-02 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.61964e-18 ( 0  0 ) ergs/cm2

Band function

Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -3.56046   -5 )
beta        : -4.92607    ( 4.96594   2.11763 )
Epeak [keV] : 28.6343      ( -4.21416 4.65455 )
Norm@50keV   : 26.2307    ( -7.09431   49.4035 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.17 using 59 PHA bins.
# Reduced chi-squared =         0.9485 for     55 degrees of freedom 
# Null hypothesis probability =   5.834432e-01
 
Photon flux (15-150 keV)    in 64 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]    : 7.57817  (-1.58662  2.12517)
R^2/D10^2   : 6.19449E-02  (-0.0394781   0.0955845)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.02 using 59 PHA bins.
# Reduced chi-squared =         0.9653 for     57 degrees of freedom 
# Null hypothesis probability =   5.496230e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.943e-08   2.411e-08
25- 50  6.267e-08   4.109e-08
50-150  1.372e-08   1.180e-08
15-150  1.158e-07   6.947e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 36.9102       (-17.5847      44.9923)
Norm        : 0.273744       (-0.111779     0.183555)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.95 using 59 PHA bins.
# Reduced chi-squared =          1.052 for     57 degrees of freedom 
# Null hypothesis probability =   3.693372e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.909e-08   2.332e-08
25- 50  4.961e-08   3.111e-08
50-150  3.506e-08   3.043e-08
15-150  1.238e-07   7.948e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.51995        (-7.54167      192.433)
R1^2/D10^2  : 4.12680E-02        (-0.0411305      1391.24)
kT2 [keV]   : 7.65170        (-7.59522      88.7169)
R2^2/D10^2  : 2.11057E-02    (-0.0209504   -0.0209504)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.02 using 59 PHA bins.
# Reduced chi-squared =          1.000 for     55 degrees of freedom 
# Null hypothesis probability =   4.737475e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.950e-08   8.154e-02
25- 50  6.261e-08   6.451e-01
50-150  1.364e-08   1.720e+01
15-150  1.158e-07   1.681e+01

Peak spectrum fit

Power-law model

Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.17730     ( -0.515333   0.576184 )
Norm@50keV  : 2.32142E-04    ( -0.000103919   0.000103692 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.24 using 59 PHA bins.
# Reduced chi-squared =          1.110 for     57 degrees of freedom 
# Null hypothesis probability =   2.654480e-01
 
Photon flux (15-150 keV)    in 64 sec: 3.79019E-02 ( -0.0122584  0.0124259 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.36964e-07 ( -5.35272e-08  5.85946e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -10.0000     (     )
Epeak [keV] : 28.0572      (   )
Norm@50keV  : 9.52286E+04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.06 using 59 PHA bins.
# Reduced chi-squared =         0.9119 for     56 degrees of freedom 
# Null hypothesis probability =   6.617619e-01
 
Photon flux (15-150 keV)    in 64 sec: 3.81040E-02 3.78770E-02 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.61964e-18 ( 0  0 ) ergs/cm2

Band function

Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -3.56046   -5 )
beta        : -4.92607    ( 4.96594   2.11763 )
Epeak [keV] : 28.6343      ( -4.21416 4.65455 )
Norm@50keV   : 26.2307    ( -7.09431   49.4035 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.17 using 59 PHA bins.
# Reduced chi-squared =         0.9485 for     55 degrees of freedom 
# Null hypothesis probability =   5.834432e-01
 
Photon flux (15-150 keV)    in 64 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]    : 7.57817  (-1.58662  2.12517)
R^2/D10^2   : 6.19449E-02  (-0.0394781   0.0955845)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.02 using 59 PHA bins.
# Reduced chi-squared =         0.9653 for     57 degrees of freedom 
# Null hypothesis probability =   5.496230e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.943e-08   2.381e-08
25- 50  6.267e-08   3.939e-08
50-150  1.372e-08   1.092e-08
15-150  1.158e-07   6.755e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 36.9102       (-17.5847      44.9923)
Norm        : 0.273744       (-0.111779     0.183555)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.95 using 59 PHA bins.
# Reduced chi-squared =          1.052 for     57 degrees of freedom 
# Null hypothesis probability =   3.693372e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.909e-08   2.234e-08
25- 50  4.961e-08   3.060e-08
50-150  3.506e-08   2.969e-08
15-150  1.238e-07   7.946e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.51995        (-7.54167      192.433)
R1^2/D10^2  : 4.12680E-02        (-0.0411305      1391.24)
kT2 [keV]   : 7.65170        (-7.59522      88.7169)
R2^2/D10^2  : 2.11057E-02    (-0.0209504   -0.0209504)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.02 using 59 PHA bins.
# Reduced chi-squared =          1.000 for     55 degrees of freedom 
# Null hypothesis probability =   4.737475e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.950e-08   7.606e-02
25- 50  6.261e-08   6.330e-01
50-150  1.364e-08   1.705e+01
15-150  1.158e-07   1.802e+01

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: 2.17730     ( -0.515333   0.576184 )
Norm@50keV  : 2.32142E-04    ( -0.000103919   0.000103692 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.24 using 59 PHA bins.
# Reduced chi-squared =          1.110 for     57 degrees of freedom 
# Null hypothesis probability =   2.654480e-01
 
Photon flux (15-150 keV)    in 64 sec: 3.79019E-02 ( -0.0122584  0.0124259 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.36964e-07 ( -5.35272e-08  5.85946e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -10.0000     (     )
Epeak [keV] : 28.0572      (   )
Norm@50keV  : 9.52286E+04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.06 using 59 PHA bins.
# Reduced chi-squared =         0.9119 for     56 degrees of freedom 
# Null hypothesis probability =   6.617619e-01
 
Photon flux (15-150 keV)    in 64 sec: 3.81040E-02 3.78770E-02 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.61964e-18 ( 0  0 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -3.56046   -5 )
beta        : -4.92607    ( 4.96594   2.11763 )
Epeak [keV] : 28.6343      ( -4.21416 4.65455 )
Norm@50keV   : 26.2307    ( -7.09431   49.4035 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.17 using 59 PHA bins.
# Reduced chi-squared =         0.9485 for     55 degrees of freedom 
# Null hypothesis probability =   5.834432e-01
 
Photon flux (15-150 keV)    in 64 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)  = 4.35e-08
S(50-100 keV) = 3.76e-08

T90 vs. Hardness ratio plot

T90                                   = 64 sec.
Hardness ratio (energy fluence ratio) = 0.864368

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.891409
Count Ratio (50-100 keV) / (15-25 keV) = 0.147315

Mask shadow pattern

IMX = 2.741022794739115E-01, IMY = -7.558222851770033E-02

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

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:
0.000000 64.000000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6402  22.0014    1.0  47.7 -136.1   2.7142  11.4    0.9	Crab                          
155.1125  41.6772    2.1  15.9   15.4   0.3815   5.6 ------	UNKNOWN                       
 99.8869   0.3017    3.0  48.8 -172.3   0.5477   3.9 ------	UNKNOWN                       
 85.2908  60.4120    2.2  41.1  -80.7   1.5649   5.3 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
110.100590 963.068800
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
150.8411   2.0259    2.3  39.9  126.8   5.3497   5.0 ------	UNKNOWN                       
122.8546  58.4515    3.1  26.2  -99.3   1.7279   3.7 ------	UNKNOWN

Plot creation:
Mon Oct  5 14:59:15 EDT 2015