batgrbproduct analysis for trigger=721234

batgrbproduct Analysis for Trigger=721234

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 Dec  4 15:33:31 EST 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger721234
======================================================================

  Trigger: 00721234      Segment: 000

  BAT Trigger Time: 500268770.304   [s; MET]
      Trigger Stop: 500268774.4   [s; MET]
               UTC: 2016-11-08T03:32:33.177140    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 180.783723776048   Dec: 24.8691396176327  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.76
     Image Trigger?:     NO
     Rate S/N Ratio:     10.5830052442584  [ if not an image trigger ]
     Image S/N Ratio:    7.76

  Flight Position:   [ source = BAT ]
    RA: 180.783723776048   Dec: 24.8691396176327  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 180.780036135262   Dec: 24.9049778897337  [deg; J2000]  
        { 12h 03m 07.2s , +24d 54' 17.9" }
         +/- 1.85186791844804 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.31608467197713 [arcmin] (formal 1-sigma fit error)
    SNR: 12.6129992073679
 
  Angular difference between Flight and Ground position is 2.159643 arcmin
 
  Partial Coding Fraction: 0.953125    [ including projection effects ]

  Duration
     T90: 115.835999906063 +/- 11.6600351623619
        Measured from: -0.495999991893768
                   to: 115.339999914169     [s; relative to TRIGTIME]
     T50: 79.4799999594688 +/- 11.3451261957804
        Measured from: 7.27599996328354
                   to: 86.7559999227524     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -1.80400002002716     
                   to: -0.804000020027161     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.90400004386902     
                   to: 126.755999982357     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.720930   0.739977   0.483102   0.039515
           0.060149   0.062129   0.052665   0.044194 [error]
 Peak      0.031894   0.032535   0.008618   0.000440
           0.005509   0.005725   0.004723   0.003849 [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 1.99e-07 3.08e-07 3.56e-07 7.97e-07 1.10e-06 1.66e-06   erg/cm2
              Error 2.64e-08 2.71e-08 4.99e-08 2.25e-07 1.16e-07 2.75e-07   erg/cm2
Peak flux Power-law 2.78e-01 2.00e-01 9.50e-02 6.37e-02 6.03e-01 6.36e-01   ph/cm2/s
              Error 7.33e-02 4.25e-02 3.51e-02 4.33e-02 1.25e-01 1.36e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.89e-07 3.26e-07 3.58e-07 3.68e-07 1.05e-06 1.24e-06   erg/cm2
              Error 2.97e-08 3.53e-08 5.38e-08 3.59e-07 1.29e-07 3.96e-07   erg/cm2
Peak flux Cutoff-PL 2.46e-01 2.54e-01 7.65e-02 4.45e-03 5.80e-01 5.80e-01   ph/cm2/s
              Error 8.66e-02 6.79e-02 4.50e-02 2.83e-02 1.24e-01 1.24e-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    1.785    0.161    -      -           9.26e-04 9.48e-05   46.500 57
CPL   1.312    0.619      65.1  -23.7      1.69e-03 1.52e-03   44.620 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.072    0.382    -      -           3.88e-03 1.11e-03   59.950 57
CPL  -0.048    2.654      36.0   17.4      7.86e-02 4.12e+00   56.840 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: 117.504000 sec.
T50 in the 50-300 keV band: 74.816000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  128.660   -1.904  126.756
T90   115.836   -0.496  115.340
T50    79.480    7.276   86.756
Peak    1.000   -1.804   -0.804

Click here for the BAT GCN circular template

Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  180.7800    24.9050   0.0153    12.3519    54.5992         0.7910670     12.613 TRIG_00721234                 
 
Foreground time interval of the image:
 -1.904  35.797 (delta_t =  37.701 [sec])
Background time interval of the image:
-239.304  -1.904 (delta_t = 237.400 [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 4.096000

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 4.096000

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 4.096000

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   -1.904 sec. to  126.756 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.78538     ( -0.158192   0.163376 )
Norm@50keV  : 9.26392E-04    ( -9.55836e-05   9.4012e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.50 using 59 PHA bins.
# Reduced chi-squared =         0.8157 for     57 degrees of freedom 
# Null hypothesis probability =   8.384547e-01
 
Photon flux (15-150 keV)    in 128.7 sec: 0.126945 ( -0.011231  0.011235 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.0984e-06 ( -1.1509e-07  1.17031e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -1.904 sec. to  126.756 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.31245     ( -0.676887   0.560203 )
Epeak [keV] : 65.1245      ( -17.7633 -65.1243 )
Norm@50keV  : 1.68831E-03    ( -0.000813865   0.0022343 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.62 using 59 PHA bins.
# Reduced chi-squared =         0.7968 for     56 degrees of freedom 
# Null hypothesis probability =   8.629685e-01
 
Photon flux (15-150 keV)    in 128.7 sec: 0.124520 ( -0.011622  0.011618 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.04995e-06 ( -1.26914e-07  1.3053e-07 ) ergs/cm2

Band function

Time interval is from   -1.904 sec. to  126.756 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 11.9527  (-1.31896  1.48205)
R^2/D10^2   : 3.07630E-02  (-0.0107258   0.0165628)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.09 using 59 PHA bins.
# Reduced chi-squared =          1.300 for     57 degrees of freedom 
# Null hypothesis probability =   6.361699e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.196e-07   1.828e-08
25- 50  3.746e-07   4.299e-08
50-150  3.210e-07   6.834e-08
15-150  8.152e-07   9.485e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 100.995       (-28.2902      52.2248)
Norm        : 0.560674       (-0.065634     0.076439)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.66 using 59 PHA bins.
# Reduced chi-squared =         0.7836 for     57 degrees of freedom 
# Null hypothesis probability =   8.824794e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.886e-07   2.387e-08
25- 50  3.268e-07   3.211e-08
50-150  5.325e-07   2.053e-07
15-150  1.048e-06   2.338e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.92104        (-1.11759      1.43642)
R1^2/D10^2  : 0.524419        (-0.325417      1.03639)
kT2 [keV]   : 18.3546        (-3.12904      4.78993)
R2^2/D10^2  : 5.17508E-03    (-0.00308056   0.00559076)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.01 using 59 PHA bins.
# Reduced chi-squared =         0.7638 for     55 degrees of freedom 
# Null hypothesis probability =   9.009851e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.986e-07   9.625e-08
25- 50  3.061e-07   1.078e-07
50-150  5.183e-07   2.204e-07
15-150  1.023e-06   3.548e-07

Peak spectrum fit

Power-law model

Time interval is from   -1.804 sec. to   -0.804 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.07186     ( -0.356825   0.407558 )
Norm@50keV  : 3.88411E-03    ( -0.00112305   0.00108889 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.95 using 59 PHA bins.
# Reduced chi-squared =          1.052 for     57 degrees of freedom 
# Null hypothesis probability =   3.691385e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.602773 ( -0.124739  0.124788 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.60048e-08 ( -9.23717e-09  9.71665e-09 ) ergs/cm2

Cutoff power-law model

Time interval is from   -1.804 sec. to   -0.804 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.84620E-02     ( -3.20872   2.09925 )
Epeak [keV] : 35.9612      ( -16.2287 18.4743 )
Norm@50keV  : 7.85554E-02    ( -0.0913179   8.14385 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.84 using 59 PHA bins.
# Reduced chi-squared =          1.015 for     56 degrees of freedom 
# Null hypothesis probability =   4.435280e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.579797 ( -0.122775  0.124235 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.04586e-08 ( -7.56205e-09  9.9543e-09 ) ergs/cm2

Band function

Time interval is from   -1.804 sec. to   -0.804 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 9.25525  (-1.69271  2.01978)
R^2/D10^2   : 0.407415  (-0.219345   0.47357)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.45 using 59 PHA bins.
# Reduced chi-squared =          1.008 for     57 degrees of freedom 
# Null hypothesis probability =   4.584916e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.889e-09   2.545e-09
25- 50  1.529e-08   5.073e-09
50-150  6.349e-09   3.362e-09
15-150  2.853e-08   1.034e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 52.1686       (-21.1936      50.2548)
Norm        : 3.41763       (-0.97934     1.44037)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.94 using 59 PHA bins.
# Reduced chi-squared =          1.017 for     57 degrees of freedom 
# Null hypothesis probability =   4.403534e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.435e-09   2.340e-09
25- 50  1.230e-08   4.401e-09
50-150  1.242e-08   7.120e-09
15-150  3.315e-08   1.337e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.94312        (-2.96495      -2.96495)
R1^2/D10^2  : 13.3927        (-13.2295      -13.2295)
kT2 [keV]   : 10.2331        (-2.30277      -10.2404)
R2^2/D10^2  : 0.252685    (-0.252064   0.482804)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.35 using 59 PHA bins.
# Reduced chi-squared =          1.025 for     55 degrees of freedom 
# Null hypothesis probability =   4.241567e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.650e-09   3.729e-09
25- 50  1.424e-08   8.390e-09
50-150  7.775e-09   4.991e-09
15-150  2.967e-08   1.632e-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: 1.73365     ( -0.174977   0.181296 )
Norm@50keV  : 1.52861E-03    ( -0.000176923   0.000174029 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.41 using 59 PHA bins.
# Reduced chi-squared =          1.165 for     57 degrees of freedom 
# Null hypothesis probability =   1.843257e-01
 
Photon flux (15-150 keV)    in 37.7 sec: 0.205462 ( -0.0206602  0.0206651 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.32286e-07 ( -6.36071e-08  6.47498e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.960158     ( -0.862988   0.713977 )
Epeak [keV] : 59.9661      ( -14.1034 138.038 )
Norm@50keV  : 4.08534E-03    ( -0.00239855   0.00807371 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.94 using 59 PHA bins.
# Reduced chi-squared =          1.124 for     56 degrees of freedom 
# Null hypothesis probability =   2.442193e-01
 
Photon flux (15-150 keV)    in 37.7 sec: 0.199503 ( -0.021344  0.021345 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.9554e-07 ( -6.92813e-08  7.2335e-08 ) ergs/cm2

Band function

 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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)  = 3.08e-07
S(50-100 keV) = 3.56e-07

T90 vs. Hardness ratio plot

T90                                   = 115.835999906063 sec.
Hardness ratio (energy fluence ratio) = 1.15584

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.02642
Count Ratio (50-100 keV) / (15-25 keV) = 0.670109

Mask shadow pattern

IMX = 1.268561399116442E-01, IMY = -1.784983442442110E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

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:
-239.304000 -1.904000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4621  35.3399   37.0  52.6 -158.4  -0.1958  -0.3    0.3	Her X-1                       
180.8209  24.9021    2.5  12.3   54.6   0.7811   4.6 ------	UNKNOWN                       
158.6011 -22.6547    3.6  58.3   -2.0   3.6556   3.2 ------	UNKNOWN                       
254.4481  42.2476    2.6  52.2 -167.1   2.4416   4.5 ------	UNKNOWN                       
238.8435   9.4132    2.4  44.9 -119.9   4.0502   4.8 ------	UNKNOWN                       
239.7038  10.0833    2.3  45.4 -121.3   4.1658   5.1 ------	UNKNOWN

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

Time interval of the image:
-1.904000 35.796600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4914  35.3484   17.0  52.6 -158.4   0.1444   0.7    1.7	Her X-1                       
180.7799  24.9048    0.9  12.4   54.6   0.7934  12.7 ------	UNKNOWN                       
249.9585  51.4296    2.4  50.1 -179.2   0.8707   4.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
68.996600 780.196600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
186.1948  28.9228    2.6   6.3 -171.6   1.6136   4.5 ------	UNKNOWN                       
162.7678 -22.9385    3.4  50.9  -18.7   2.9641   3.4 ------	UNKNOWN                       
210.9585   0.8772    3.9  37.7  -95.4   4.0122   2.9 ------	UNKNOWN                       
207.6946  -6.7121    2.4  41.0  -83.4   8.6263   4.8 ------	UNKNOWN

Plot creation:
Sun Dec  4 17:20:13 EST 2016