AGASC ID 1236420536

Info

Last Obs. 2022:217:20:29
magcatalog 9.37 ± 0.07
mag3 arcsec 9.37 ± 0.03
mag5 arcsec 9.37 ± 0.03
Nobs 12 (0 bad)
fok 98.4%
f3 arcsec 100.0%
f5 arcsec 100.0%

Timeline

Observation Info

OBSID Time Slot Row Col N Nmag est ok Nout fmag est ok fdr3 fdbox5 fmag est ok 3 ⟨ δ mag ⟩ 100s ⟨ mag ⟩ σmag Comments
20442 2018:352:02:07:11.860 6 219.7 327.8 19576 19422 47 99.2% 99.9% 100.0% 99.1% 0.04 9.35 0.00 --
24454 2020:365:03:38:58.789 7 273.7 247.5 13748 13326 18 96.9% 99.9% 100.0% 96.9% 0.07 9.35 0.00 --
24460 2021:002:16:23:35.510 7 294.3 221.5 7405 7296 19 98.5% 99.9% 100.0% 98.4% 0.10 9.34 0.00 --
24920 2021:003:05:13:35.074 5 294.5 221.3 8383 8327 14 99.3% 99.9% 100.0% 99.2% 0.08 9.35 0.00 --
24457 2021:183:10:50:14.362 6 -286.6 -230.7 12546 12267 14 97.8% 100.0% 100.0% 97.7% 0.06 9.38 0.00 --
24456 2021:211:16:50:43.573 7 -360.7 -94.6 12401 11957 13 96.4% 100.0% 100.0% 96.4% 0.09 9.35 0.00 --
24453 2021:273:03:29:11.751 6 -244.4 294.7 12344 12169 18 98.6% 100.0% 100.0% 98.6% 0.06 9.35 0.00 --
24452 2021:277:04:59:56.285 7 -284.3 254.8 12286 12086 10 98.4% 100.0% 100.0% 98.3% 0.08 9.36 0.00 --
24449 2022:176:14:39:00.500 6 -251.1 -265.9 13753 13340 21 97.0% 99.9% 100.0% 96.9% 0.07 9.38 0.00 --
24450 2022:188:11:12:18.150 5 -305.2 -206.4 24203 24200 14 100.0% 100.0% 100.0% 99.9% 0.21 9.39 0.00 --
24451 2022:215:22:51:45.100 5 -372.3 -49.5 19835 19729 12 99.5% 100.0% 100.0% 99.5% 0.14 9.41 0.00 --
26483 2022:217:20:29:47.958 6 -378.0 26.6 12158 11899 17 97.9% 99.9% 100.0% 97.8% 0.05 9.39 0.00 --

  • sample: One sample of ACA image telemetry. This could be a real image readout or it could be a null 4x4 image when the ACA is not tracking. Be aware that the sample period is faster for null 4x4 images (1.025 sec) than for typical 6x6 or 8x8 tracked images (2.05 or 4.1 sec respectively).
  • Kalman samples: Subset of samples when ACA could be tracking stars (AOPCADMD == NPNT & AOACASEQ == KALM)
  • dr3: Subset of tracked Kalman samples with radial centroid residual < 3 arcsec. This corresponds to "high quality" readouts. This effectively includes the track subset (AOACFCT == TRAK) because readouts with no TRAK are assigned an infinite centroid residual.
  • dbox5: Subset of tracked Kalman samples with centroid residual within a 5 arcsec box. This corresponds to spatial filter used by the OBC for inclusion in Kalman filter. This effectively includes the track subset (AOACFCT == TRAK) because readouts with no TRAK are assigned an infinite centroid residual.
  • track: Subset of Kalman samples where the image is being tracked (AOACFCT == TRAK)
  • sat_pix: Subset of Kalman samples with saturated pixel flag OK (AOACISP == OK)
  • ion_rad: Subset of Kalman samples with ionizing radiation flag OK (AOACIIR == OK)
  • mag_est_ok: Subset of Kalman samples that have a magnitude estimate (track & ion_rad)
  • n_total: Total number of sample regardless of OBC PCAD status
  • n: Synonym for n_total
  • n_kalman: Number of Kalman samples
  • n_dr3: Number of dr3 samples.
  • n_dbox5: Number of dbox5 samples.
  • n_track: Number of track samples.
  • n_ok_3: Number of (track & sat_pix & ion_rad & dr3) samples
  • n_ok_5: Number of (track & sat_pix & ion_rad & dbox5) samples
  • n_mag_est_ok: Number of (track & ion_rad) samples
  • n_mag_est_ok_3: Number of (track & ion_rad & dr3) samples
  • n_mag_est_ok_5: Number of (track & ion_rad & dbox5) samples
  • f_dr3: Fraction of mag-est-ok samples with centroid residual < 3 arcsec((mag_est_ok & n_dr3)/n_mag_est_ok)
  • f_dbox5: Fraction of mag-est-ok samples with centroid within 5 arcsec box((mag_est_ok & n_dbox5)/n_mag_est_ok)
  • f_mag_est_ok: n_mag_est_ok_3/n_kalman. This is a measure of the fraction of time during an observation that a magnitude estimate is available.
  • f_mag_est_ok_3: n_mag_est_ok_3/n_kalman.
  • f_mag_est_ok_5: n_mag_est_ok_5/n_kalman.
  • f_ok: n_ok_5 / n_kalman. Same as f_ok_5
  • f_ok_3: n_ok_3 / n_kalman. This is a measure of the fraction of time during an observation that the Kalman filter is getting high-quality star centroids.
  • f_ok_5: n_ok_5 / n_kalman. This is a measure of the fraction of time during an observation that the Kalman filter is getting any star centroid at all. This includes measurements out to 5 arcsec box halfwidth, so potentially 7 arcsec radial offset.