batgrbproduct analysis for trigger=753445

batgrbproduct Analysis for Trigger=753445

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): Wed Jun  7 16:49:19 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger753445
======================================================================

  Trigger: 00753445      Segment: 000

  BAT Trigger Time: 516863421.888   [s; MET]
      Trigger Stop: 516863425.984   [s; MET]
               UTC: 2017-05-19T05:10:02.805780    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 163.45003598818   Dec: 25.3780364633414  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.3
     Image Trigger?:     NO
     Rate S/N Ratio:     14.3527000944073  [ if not an image trigger ]
     Image S/N Ratio:    10.3

  Flight Position:   [ source = BAT ]
    RA: 163.45003598818   Dec: 25.3780364633414  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 163.42952389056   Dec: 25.380288299753  [deg; J2000]  
        { 10h 53m 43.1s , +25d 22' 49.0" }
         +/- 1.47499724032404 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.477745590393688 [arcmin] (formal 1-sigma fit error)
    SNR: 17.4577424911478
 
  Angular difference between Flight and Ground position is 1.120128 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 220.251999914646 +/- 143.838515308131
        Measured from: -24.027999997139
                   to: 196.223999917507     [s; relative to TRIGTIME]
     T50: 17.8279999494553 +/- 140.066483600232
        Measured from: -6.95200002193451
                   to: 10.8759999275208     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.835999965667725     
                   to: 1.83599996566772     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -30.1999999880791     
                   to: 201.263999998569     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.817731   0.853134   0.451910   0.047711
           0.084036   0.087723   0.077524   0.071115 [error]
 Peak      0.020203   0.041522   0.018445   0.011681
           0.005854   0.006144   0.005494   0.004712 [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 2.36e-07 3.31e-07 3.45e-07 6.53e-07 1.12e-06 1.57e-06   erg/cm2
              Error 3.91e-08 3.88e-08 7.43e-08 2.83e-07 1.67e-07 3.62e-07   erg/cm2
Peak flux Power-law 2.09e-01 2.24e-01 1.70e-01 2.10e-01 6.82e-01 8.13e-01   ph/cm2/s
              Error 7.08e-02 4.71e-02 4.43e-02 1.15e-01 1.36e-01 1.72e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.38e-07 2.96e-07 3.03e-07 6.97e-07 1.09e-06 1.58e-06   erg/cm2
              Error 4.34e-08 9.37e-08 6.32e-08 2.02e-07 1.74e-07 2.85e-07   erg/cm2
Peak flux Cutoff-PL 2.09e-01 2.23e-01 1.70e-01 2.11e-01 6.83e-01 8.19e-01   ph/cm2/s
              Error 6.91e-02 5.49e-02 4.52e-02 -------- 1.03e-01 2.05e-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    1.948    0.235    -      -           5.25e-04 8.10e-05   41.410 57
CPL   2.163    0.472      67.5    0.0      4.02e-04 0.00e+00   41.150 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.396    0.355    -      -           5.61e-03 1.15e-03   60.310 57
CPL   1.399    0.787    9999.4    0.0      5.61e-03 2.18e-02   60.310 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: 38.656000 sec.
T50 in the 50-300 keV band: 19.776000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  231.464  -30.200  201.264
T90   220.252  -24.028  196.224
T50    17.828   -6.952   10.876
Peak    1.000    0.836    1.836

Click here for the BAT GCN circular template

Special notes of this burst

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
  163.4295    25.3803   0.0111    13.0237   160.6342         1.6839444     17.458 TRIG_00753445                 
 
Foreground time interval of the image:
-30.200  35.613 (delta_t =  65.813 [sec])
Background time interval of the image:
-713.287 -695.698 (delta_t =  17.589 [sec])
-239.888 -30.200 (delta_t = 209.688 [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  -30.200 sec. to  201.264 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.94814     ( -0.228056   0.242673 )
Norm@50keV  : 5.25385E-04    ( -8.23195e-05   7.96964e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.41 using 59 PHA bins.
# Reduced chi-squared =         0.7265 for     57 degrees of freedom 
# Null hypothesis probability =   9.400895e-01
 
Photon flux (15-150 keV)    in 231.5 sec: 7.69921E-02 ( -0.0088509  0.008851 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.11941e-06 ( -1.64529e-07  1.69848e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -30.200 sec. to  201.264 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.16285     ( -0.857529   0.0872157 )
Epeak [keV] : 67.4866      (   )
Norm@50keV  : 4.02085E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.15 using 59 PHA bins.
# Reduced chi-squared =         0.7349 for     56 degrees of freedom 
# Null hypothesis probability =   9.313585e-01
 
Photon flux (15-150 keV)    in 231.5 sec: 7.17152E-02 ( -0.0214052  0.0140112 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09064e-06 ( -2.00021e-07  1.48532e-07 ) ergs/cm2

Band function

Time interval is from  -30.200 sec. to  201.264 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]    : 9.12624  (-1.33109  1.61333)
R^2/D10^2   : 4.90282E-02  (-0.022657   0.0410769)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.07 using 59 PHA bins.
# Reduced chi-squared =          1.124 for     57 degrees of freedom 
# Null hypothesis probability =   2.425711e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.854e-07   4.110e-08
25- 50  4.026e-07   6.332e-08
50-150  1.602e-07   5.759e-08
15-150  7.482e-07   1.181e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 72.7290       (-25.1473      50.769)
Norm        : 0.370111       (-0.0647226     0.083842)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.84 using 59 PHA bins.
# Reduced chi-squared =         0.7690 for     57 degrees of freedom 
# Null hypothesis probability =   8.996152e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.207e-07   3.652e-08
25- 50  3.547e-07   4.746e-08
50-150  4.685e-07   2.240e-07
15-150  1.044e-06   2.255e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.75824        (-1.6177      1.71669)
R1^2/D10^2  : 0.229580        (-0.139344      0.597608)
kT2 [keV]   : 25.5597        (-9.63374      30.037)
R2^2/D10^2  : 7.97706E-04    (-0.000699787   0.00363563)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.93 using 59 PHA bins.
# Reduced chi-squared =         0.7623 for     55 degrees of freedom 
# Null hypothesis probability =   9.026068e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.409e-07   8.819e-08
25- 50  3.193e-07   1.362e-07
50-150  5.891e-07   3.393e-07
15-150  1.149e-06   5.173e-07

Peak spectrum fit

Power-law model

Time interval is from    0.836 sec. to    1.836 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.39561     ( -0.356212   0.354674 )
Norm@50keV  : 5.60541E-03    ( -0.00116247   0.0011455 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.31 using 59 PHA bins.
# Reduced chi-squared =          1.058 for     57 degrees of freedom 
# Null hypothesis probability =   3.570587e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.681969 ( -0.135742  0.135864 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.42188e-08 ( -1.25415e-08  1.29009e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.836 sec. to    1.836 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.39892     ( -1.22098   0.352989 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 5.61118E-03    ( -0.00116408   0.042395 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.31 using 59 PHA bins.
# Reduced chi-squared =          1.077 for     56 degrees of freedom 
# Null hypothesis probability =   3.227440e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.682824 ( -0.069829  0.135611 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.43588e-08 ( -1.56945e-08  1.00552e-08 ) ergs/cm2

Band function

Time interval is from    0.836 sec. to    1.836 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]    : 12.3640  (-2.68232  4.22891)
R^2/D10^2   : 0.152152  (-0.0981594   0.213755)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.63 using 59 PHA bins.
# Reduced chi-squared =          1.151 for     57 degrees of freedom 
# Null hypothesis probability =   2.025117e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.929e-09   1.990e-09
25- 50  1.606e-08   6.455e-09
50-150  1.505e-08   7.364e-09
15-150  3.604e-08   1.305e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-103.563      -199.363)
Norm        : 2.78864       (-0.553745     0.553745)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.83 using 59 PHA bins.
# Reduced chi-squared =          1.067 for     57 degrees of freedom 
# Null hypothesis probability =   3.396721e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.944e-09   4.045e-09
25- 50  1.336e-08   7.690e-09
50-150  2.930e-08   1.712e-08
15-150  4.960e-08   2.924e-08

Double BB

------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.55784        (-2.45883      2.31108)
R1^2/D10^2  : 0.326649        (-0.174685      0.537371)
kT2 [keV]   : 199.154        (-168.008      -199.155)
R2^2/D10^2  : 1.10287E-04    (-5.15718e-05   0.00449357)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.30 using 59 PHA bins.
#Fit statistic : Chi-Squared =          56.28 using 59 PHA bins.
# Reduced chi-squared =          1.024 for     55 degrees of freedom 
# Reduced chi-squared =          1.023 for     55 degrees of freedom 
# Null hypothesis probability =   4.262050e-01
# Null hypothesis probability =   4.268259e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.010e-09   3.490e-09
25- 50  1.517e-08   8.615e-09
50-150  3.500e-08   1.105e-08
15-150  5.619e-08   2.028e-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: 1.67470     ( -0.157633   0.160674 )
Norm@50keV  : 1.57548E-03    ( -0.000146604   0.000144172 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.25 using 59 PHA bins.
# Reduced chi-squared =         0.9692 for     57 degrees of freedom 
# Null hypothesis probability =   5.411085e-01
 
Photon flux (15-150 keV)    in 65.81 sec: 0.207426 ( -0.0170875  0.0171034 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.62017e-07 ( -9.5027e-08  9.65367e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.68143     ( -0.212142   0.155981 )
Epeak [keV] : 9999.36      ( -9999.35 -9999.36 )
Norm@50keV  : 1.57024E-03    ( -0.00157598   0.000771728 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.27 using 59 PHA bins.
# Reduced chi-squared =         0.9869 for     56 degrees of freedom 
# Null hypothesis probability =   5.025683e-01
 
Photon flux (15-150 keV)    in 65.81 sec: 0.207550 ( -0.01728  0.016955 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.56463e-07 ( -8.94358e-08  9.96232e-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)  = 3.31e-07
S(50-100 keV) = 3.45e-07

T90 vs. Hardness ratio plot

T90                                   = 220.251999914646 sec.
Hardness ratio (energy fluence ratio) = 1.0423

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.04329
Count Ratio (50-100 keV) / (15-25 keV) = 0.552639

Mask shadow pattern

IMX = -2.182161826913611E-01, IMY = -7.669959570072656E-02

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:
-713.287400 -695.698000
-239.888000 -30.200000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
143.8059  34.9781    2.0  18.1 -123.4   1.1583   5.6 ------	UNKNOWN                       
133.3504  19.0137    3.0  34.3 -144.8   1.0514   3.8 ------	UNKNOWN                       
111.1831  67.9066    2.7  42.0  -57.4   2.5273   4.3 ------	UNKNOWN

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

Time interval of the image:
-30.200000 35.612590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
163.4295  25.3803    0.7  13.0  160.6   1.6840  17.4 ------	UNKNOWN                       
149.7552   4.6811    2.0  36.7  178.0   0.7548   5.7 ------	UNKNOWN                       
 35.4355  86.7251    2.6  54.0  -33.1   1.9432   4.4 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
69.612600 842.412000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
168.5369  70.5613    2.7  45.3  -22.8   2.8551   4.3 ------	UNKNOWN                       
123.6059  -4.6699    3.1  49.0 -147.3   3.6305   3.8 ------	UNKNOWN                       
116.7462   7.2234    3.5  48.0 -129.0   6.1319   3.3 ------	UNKNOWN

Plot creation:
Wed Jun  7 18:01:36 EDT 2017