batgrbproduct analysis for trigger=1114937

batgrbproduct Analysis for Trigger=1114937

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 v2.48
    Process Start Time (local time): Mon Oct 24 11:42:09 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1114937
======================================================================

  Trigger: 01114937      Segment: 000

  BAT Trigger Time: 678816583.744   [s; MET]
      Trigger Stop: 678816585.792   [s; MET]
               UTC: 2022-07-06T16:09:14.296300    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 0.586794992558329   Dec: -16.3913692713963  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.84
     Image Trigger?:     NO
     Rate S/N Ratio:     11.6189500386223  [ if not an image trigger ]
     Image S/N Ratio:    8.84

  Flight Position:   [ source = BAT ]
    RA: 0.586794992558329   Dec: -16.3913692713963  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 0.576635887418828   Dec: -16.4099403096171  [deg; J2000]  
        { 00h 02m 18.4s , -16d 24' 35.8" }
         +/- 1.83874457719802 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.69680251666877 [arcmin] (formal 1-sigma fit error)
    SNR: 12.7417963243122
 
  Angular difference between Flight and Ground position is 1.258374 arcmin
 
  Partial Coding Fraction: 0.7421875    [ including projection effects ]

  Duration
     T90: 85.9960000514984 +/- 18.3338030110254
        Measured from: -55.3880000114441
                   to: 30.6080000400543     [s; relative to TRIGTIME]
     T50: 24.4279999732971 +/- 10.183611313527
        Measured from: -12.055999994278
                   to: 12.3719999790192     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 3.72400009632111     
                   to: 4.72400009632111     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -71.039999961853     
                   to: 36.0360000133514     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.786151   0.922146   0.528778   0.226466
           0.067553   0.069822   0.062252   0.058334 [error]
 Peak      0.029890   0.050888   0.025863   0.013277
           0.006969   0.007331   0.006415   0.005816 [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 2.37e-07 3.72e-07 4.39e-07 1.01e-06 1.34e-06 2.06e-06   erg/cm2
              Error 3.33e-08 3.26e-08 6.30e-08 3.03e-07 1.43e-07 3.59e-07   erg/cm2
Peak flux Power-law 3.26e-01 3.03e-01 1.96e-01 1.95e-01 9.06e-01 1.02e+00   ph/cm2/s
              Error 9.64e-02 5.74e-02 5.40e-02 1.09e-01 1.70e-01 1.98e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.38e-07 3.68e-07 4.40e-07 1.05e-06 1.36e-06 2.05e-06   erg/cm2
              Error 3.64e-08 3.74e-08 -------- 3.97e-07 1.47e-07 4.28e-07   erg/cm2
Peak flux Cutoff-PL 3.29e-01 2.99e-01 1.94e-01 1.97e-01 9.07e-01 1.02e+00   ph/cm2/s
              Error 1.04e-01 6.45e-02 5.42e-02 -------- 1.70e-01 2.12e-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    1.757    0.173    -      -           1.36e-03 1.39e-04   41.570 57
CPL   1.757    0.241    9999.4   -0.0      1.36e-03 1.06e-03   41.570 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.632    0.346    -      -           6.98e-03 1.47e-03   68.890 57
CPL   1.644    0.470    9999.4   -0.0      6.93e-03 1.53e-02   68.890 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: 22.336000 sec.
T50 in the 50-300 keV band: 10.816000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  107.076  -71.040   36.036
T90    85.996  -55.388   30.608
T50    24.428  -12.056   12.372
Peak    1.000    3.724    4.724

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
    0.5766   -16.4099   0.0151    21.1586   123.7046         2.2697742     12.742 TRIG_01114937                 
 
Foreground time interval of the image:
-66.443  29.757 (delta_t =  96.200 [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 2.048000

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 2.048000

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 2.048000

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  -71.040 sec. to   36.036 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75727     ( -0.170512   0.175708 )
Norm@50keV  : 1.35756E-03    ( -0.000140061   0.000137261 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   41.57     using 59 bins.
 Reduced chi-squared = 0.729298
# Null hypothesis probability of 9.38e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 107.1 sec: 0.184069 ( -0.01629  0.016303 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.34128e-06 ( -1.42083e-07  1.44827e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -71.040 sec. to   36.036 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75687     ( -0.306485   0.176068 )
Epeak [keV] : 9999.35      ( -9999.35 -9999.36 )
Norm@50keV  : 1.35920E-03    ( -0.000916072   0.00120603 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   41.57     using 59 bins.
 Reduced chi-squared = 0.742321
# Null hypothesis probability of 9.25e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 107.1 sec: 0.184749 ( -0.018036  0.017164 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.35931e-06 ( -1.69882e-07  1.23989e-07 ) ergs/cm2

Band function

Time interval is from  -71.040 sec. to   36.036 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]    : 11.2053  (-1.22237  1.42403)
R^2/D10^2   : 5.51315E-02  (-0.0197183   0.0297165)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   75.44     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.15e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.554e-07   2.378e-08
25- 50  4.500e-07   5.189e-08
50-150  3.237e-07   7.058e-08
15-150  9.291e-07   1.133e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 115.460       (-37.7642      74.9206)
Norm        : 0.780768       (-0.0880746     0.112747)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.93     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.98e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.181e-07   2.677e-08
25- 50  3.876e-07   4.707e-08
50-150  6.784e-07   2.725e-07
15-150  1.284e-06   3.805e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.69126        (-1.82135      1.64778)
R1^2/D10^2  : 0.178828        (-0.0862096      0.299439)
kT2 [keV]   : 39.0750        (-16.976      -39.1555)
R2^2/D10^2  : 5.22633E-04    (-0.000477664   0.0028818)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   44.09     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.54e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.099e-07   5.350e-08
25- 50  4.003e-07   1.017e-07
50-150  7.799e-07   3.849e-07
15-150  1.390e-06   5.241e-07

Peak spectrum fit

Power-law model

Time interval is from    3.724 sec. to    4.724 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.63229     ( -0.340244   0.351311 )
Norm@50keV  : 6.97527E-03    ( -0.00149228   0.00144308 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   68.89     using 59 bins.
 Reduced chi-squared = 1.2086
# Null hypothesis probability of 1.34e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.905586 ( -0.16948  0.169524 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.5001e-08 ( -1.45871e-08  1.5069e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    3.724 sec. to    4.724 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.64362     ( -0.595479   0.34451 )
Epeak [keV] : 9999.36      ( -9999.35 -9999.36 )
Norm@50keV  : 6.93325E-03    ( -0.00148624   0.0290993 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   68.89     using 59 bins.
 Reduced chi-squared = 1.23018
# Null hypothesis probability of 1.16e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.906672 ( -0.170951  0.169008 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.55813e-08 ( -1.11097e-08  9.2839e-09 ) ergs/cm2

Band function

Time interval is from    3.724 sec. to    4.724 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]    : 9.63207  (-1.80263  2.52855)
R^2/D10^2   : 0.493140  (-0.288552   0.583894)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   74.76     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.73e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.189e-09   3.370e-09
25- 50  2.165e-08   6.925e-09
50-150  1.012e-08   5.507e-09
15-150  4.096e-08   1.288e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 143.565       (-82.5314      -144.734)
Norm        : 3.76460       (-0.767912     1.10517)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   69.55     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.23e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.703e-09   5.490e-09
25- 50  1.787e-08   9.940e-09
50-150  3.463e-08   2.194e-08
15-150  6.220e-08   3.609e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.11056        (-1.58592      1.59404)
R1^2/D10^2  : 0.839214        (-0.436112      1.05827)
kT2 [keV]   : 197.329        (-160.093      -197.533)
R2^2/D10^2  : 1.41318E-04    (-5.98758e-05   0.00309778)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.48     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.55e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.026e-08   5.439e-09
25- 50  1.959e-08   1.041e-08
50-150  4.188e-08   1.280e-08
15-150  7.173e-08   2.656e-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: 1.71767     ( -0.1749   0.180183 )
Norm@50keV  : 1.42234E-03    ( -0.000147033   0.000144077 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.87     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.99e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 96.2 sec: 0.190084 ( -0.0171687  0.017193 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.26519e-06 ( -1.36508e-07  1.38883e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.72456     ( -0.182139   0.175635 )
Epeak [keV] : 9999.36      ( -9999.35 -9999.36 )
Norm@50keV  : 1.41734E-03    ( -0.0014224   0.000909325 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.88     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.80e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 96.2 sec: 0.190228 ( -0.017396  0.017019 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.25806e-06 ( -1.29764e-07  1.43838e-07 ) 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)  = 3.72e-07
S(50-100 keV) = 4.39e-07

T90 vs. Hardness ratio plot

T90                                   = 85.9960000514984 sec.
Hardness ratio (energy fluence ratio) = 1.18011

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.17299
Count Ratio (50-100 keV) / (15-25 keV) = 0.672616

Mask shadow pattern

IMX = -2.147751411164212E-01, IMY = -3.219851867981682E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

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:
-66.443400 29.756600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
  0.5767 -16.4099    0.9  21.2  123.7   2.2699  12.7 ------	UNKNOWN                       
357.7671  27.3931    2.5  54.5  176.0   2.8226   4.7 ------	UNKNOWN                       
 37.1112 -40.5479    3.1  22.6   -7.5   0.5926   3.7 ------	UNKNOWN                       
 83.5318 -64.2880    2.1  58.2   -3.7   4.0965   5.4 ------	UNKNOWN                       
 17.0660  37.5543    3.3  59.5 -161.9   4.3609   3.4 ------	UNKNOWN                       
 45.9774  11.5197    2.2  40.6 -119.8   1.9741   5.2 ------	UNKNOWN                       
 38.2799  27.7386    2.7  51.8 -139.0   3.2406   4.3 ------	UNKNOWN                       
 70.2957 -19.7388    4.1  44.8  -60.5   2.1593   2.8 ------	UNKNOWN                       
 54.7887   5.0056    3.0  41.6 -103.3   2.7844   3.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
85.756600 962.357100
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
354.0971  21.7203    3.2  38.6 -170.8   5.5903   3.6 ------	UNKNOWN                       
 25.2807 -45.0858    4.7  35.4  -11.7   3.4438   2.4 ------	UNKNOWN                       
 11.3175  17.8471    2.5  35.8 -143.5   6.7445   4.6 ------	UNKNOWN                       
 47.2531 -18.5531    2.2  44.4  -61.1  27.2329   5.2 ------	UNKNOWN

Plot creation:
Mon Oct 24 12:42:23 EDT 2022