Transient Analysis Summary

Summary of the Input Information

T0: 591546871.406999946 [MET] (2019-09-30T14:34:07.685 UTC)
Search time window: T0 +/- 100.0 s
Input source: RA=0.0, DEC=0.0 (source location is randomly seleected, since the true location is unknown.)
Input image: /local/data/bat2/batusers/batgroup/BAT_GW/results/S190930t/bayestar.fits.gz

FOV Check

The input source is out of the BAT FOV
The input image does not overlaps with the BAT FOV
The integrated LIGO localization probability that are in BAT FOV (with pcode > 10%): 0.10314873680100857
The integrated probability of Phil's convolved map that are in BAT FOV (with pcode > 10%): 0.07339110385527071
The integrated LIGO localization probability that are outside of the BAT FOV (with pcode > 10%) but above the Earth's limb: 0.6637595768955419

RED: BAT FOV (the brighter/whiter color refers to higher partial coding fraction).

YELLOW: Earth

BLUE: LIGO probability map

GREEN STAR: Input source (location is randomly seleected unless the true source location is available.)

Raw Light Curves

Quad-rate light curves (with 1.6 s time bin)

64-ms light curves

Detection > 5-sigma found:
## Time  Net_count SNR
4.881000280380249 332.90656 14.804395788276745

1-s light curves

Detection > 5-sigma found:
## Time  Net_count SNR
4.593000054359436 1721.29 9.464366315053784

Event data image search

Event data found. The analysis results are listing below.

 
## list of detected sources for 00032699026
 
########################################
 
########################################
## tstart_since_T0: 0.0
## tstop_since_T0: 0.1

                 TIME                           NAME     RA_OBJ    DEC_OBJ      THETA        PHI        SNR
                    s                                       deg        deg        deg        deg           
  1  591546871.407000 Vela X-1                         135.5286   -40.5547    48.8317  -149.5312      0.808
  2  591546871.407000 Cen X-3                          170.3158   -60.6230    19.6511  -146.2441      0.083
  3  591546871.407000 GX 301-2                         186.6567   -62.7703    11.8320  -139.5379      0.451
  4  591546871.407000 Sco X-1                          244.9795   -15.6402    54.1152   -11.3956     -0.013
  5  591546871.407000 4U 1700-377                      255.9866   -37.8441    36.9294    13.0095      0.408
  6  591546871.407000 GX 349+2                         256.4354   -36.4231    38.3542    12.4480      1.884
  7  591546871.407000 GX 1+4                           263.0090   -24.7456    51.3214    12.5316      1.055
  8  591546871.407000 4U 1735-44                       264.7429   -44.4500    34.7289    28.5240     -2.240
  9  591546871.407000 GX 5-1                           270.2842   -25.0792    53.7930    20.2512      0.152
 10  591546871.407000 GRS 1758-258                     270.3025   -25.7431    53.2022    20.6285     -1.028
 11  591546871.407000 H1820-303                        275.9250   -30.3670    51.3415    28.8756     -2.443
 12  591546871.407000 GX 354-0                         262.9891   -33.8347    43.1261    17.9038      0.492
 13  591546871.407000 UNKNOWN                          261.3763   -15.9865    58.8247     6.7017      5.552


## tstart_since_T0: -2.0
## tstop_since_T0: 8.0

                 TIME                           NAME     RA_OBJ    DEC_OBJ      THETA        PHI        SNR
                    s                                       deg        deg        deg        deg           
  1  591546869.407000 Vela X-1                         135.5286   -40.5547    48.8317  -149.5312      3.123
  2  591546869.407000 Cen X-3                          170.3158   -60.6230    19.6512  -146.2441      0.131
  3  591546869.407000 GX 301-2                         186.6567   -62.7703    11.8321  -139.5380      5.945
  4  591546869.407000 Sco X-1                          244.9795   -15.6402    54.1152   -11.3956      3.286
  5  591546869.407000 4U 1700-377                      255.9866   -37.8441    36.9294    13.0096      0.305
  6  591546869.407000 GX 349+2                         256.4354   -36.4231    38.3542    12.4480      1.122
  7  591546869.407000 GX 1+4                           263.0090   -24.7456    51.3214    12.5316      1.287
  8  591546869.407000 4U 1735-44                       264.7429   -44.4500    34.7288    28.5240      0.716
  9  591546869.407000 GX 5-1                           270.2842   -25.0792    53.7930    20.2513      0.960
 10  591546869.407000 GRS 1758-258                     270.3025   -25.7431    53.2022    20.6285      1.513
 11  591546869.407000 H1820-303                        275.9250   -30.3670    51.3414    28.8756     -0.083
 12  591546869.407000 GX 354-0                         262.9891   -33.8347    43.1261    17.9038      0.016
 13  591546869.407000 UNKNOWN                          326.9914   -62.2660    43.3729    91.6061      3.367
 14  591546869.407000 UNKNOWN                           31.9645   -64.6730    49.9209   129.2191      3.522
 15  591546869.407000 UNKNOWN                          293.1696   -73.2114    26.9247    91.0534      3.874
 16  591546869.407000 UNKNOWN                          210.3178   -20.0473    45.3973   -53.9543      4.480
########################################
 
########################################
## tstart_since_T0: -79.0 (end of spacecraft slews)
## tstop_since_T0: 98.654

                 TIME                           NAME     RA_OBJ    DEC_OBJ      THETA        PHI        SNR
                    s                                       deg        deg        deg        deg           
  1  591546792.407000 Vela X-1                         135.5286   -40.5547    48.8316  -149.5312      1.521
  2  591546792.407000 Cen X-3                          170.3158   -60.6230    19.6511  -146.2438      0.661
  3  591546792.407000 GX 301-2                         186.6567   -62.7703    11.8320  -139.5374     25.789
  4  591546792.407000 Sco X-1                          244.9795   -15.6402    54.1153   -11.3957      9.687
  5  591546792.407000 4U 1700-377                      255.9866   -37.8441    36.9295    13.0094     -0.609
  6  591546792.407000 GX 349+2                         256.4354   -36.4231    38.3543    12.4479      4.476
  7  591546792.407000 GX 1+4                           263.0090   -24.7456    51.3215    12.5315      0.278
  8  591546792.407000 4U 1735-44                       264.7429   -44.4500    34.7290    28.5238     -0.093
  9  591546792.407000 GX 5-1                           270.2842   -25.0792    53.7931    20.2511      0.641
 10  591546792.407000 GRS 1758-258                     270.3025   -25.7431    53.2023    20.6284      2.075
 11  591546792.407000 H1820-303                        275.9250   -30.3670    51.3415    28.8755     -0.276
 12  591546792.407000 GX 354-0                         262.9891   -33.8347    43.1262    17.9037      1.616
 13  591546792.407000 UNKNOWN                          301.3853   -56.1890    40.2589    70.5703      4.019
 14  591546792.407000 UNKNOWN                           58.4333   -60.2845    52.9202   145.2673      3.631
 15  591546792.407000 UNKNOWN                           61.8975   -69.9886    43.1705   143.8152      3.418
 16  591546792.407000 UNKNOWN                           81.0586   -53.7712    55.3784   162.0854      3.139
 17  591546792.407000 UNKNOWN                          304.1250   -86.7037    24.8518   122.0910      4.357
 18  591546792.407000 UNKNOWN                          266.9476   -45.7611    34.5668    32.0915      4.677
 19  591546792.407000 UNKNOWN                           99.5146   -49.6821    54.2147   176.8382      4.152
 20  591546792.407000 UNKNOWN                          141.9747   -31.4042    54.0085  -137.7886      4.674
########################################

Investigation of the detector glitch around T+4.9 s

The short spike at ~T+4.9 s in 15-25 keV is due to detector glitch.

Reasons:
1. It is extremely short (~ 40 ms; see the zoomed-in light curve below).
2. The counts are from a few dozen of specific detectors (see the TIME vs DetID and the DPI plot below).
3. No credible sources are found in the image made from T+4.9 s to T+4.94 s in 15-25 keV.

Here is the zoomed-in light curve of the short spike from T+4.9 s to T+4.94 s in 15-25 keV:


Here is the TIME vs DetID plot from T+4.9 s to T+4.94 s:


Here is the DPI from T+4.9 s to T+4.94 s:

Last update: Mon Sep 30 18:30:43 EDT 2019