AGASC ID 501876472

Info

Last Obs. 2024:301:12:04
magcatalog 8.99 ± 0.02
mag3 arcsec 9.02 ± 0.03
mag5 arcsec 9.02 ± 0.03
Nobs 12 (0 bad)
fok 99.0%
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
4936 2004:206:17:13:21.408 5 122.1 194.2 45638 45526 58 99.9% 100.0% 100.0% 99.9% 0.02 9.00 0.00 --
19023 2017:319:13:40:45.122 5 -47.1 239.4 8248 8131 5 99.4% 100.0% 100.0% 99.4% 0.06 8.97 0.00 --
24394 2021:314:09:15:55.157 7 -188.3 81.1 15024 14698 10 98.3% 100.0% 100.0% 98.3% 0.05 9.03 0.00 --
24398 2021:315:13:10:28.805 7 -192.3 66.5 14046 13783 10 98.6% 100.0% 100.0% 98.5% 0.06 9.03 0.00 --
24395 2021:317:17:06:04.666 7 -190.1 82.0 13316 12978 14 98.1% 100.0% 100.0% 98.1% 0.04 9.04 0.00 --
23842 2021:319:07:51:38.474 7 -200.0 35.9 19170 18879 25 98.9% 100.0% 100.0% 98.9% 0.11 9.03 0.00 --
24400 2021:324:16:07:28.400 7 -199.6 35.7 10390 10191 15 98.8% 100.0% 100.0% 98.8% 0.05 9.02 0.00 --
24396 2022:013:14:36:40.258 5 -154.6 -121.6 14784 14533 9 98.7% 100.0% 100.0% 98.7% 0.12 9.04 0.00 --
24397 2022:023:10:49:47.801 4 -65.6 -188.4 13465 13197 8 98.5% 100.0% 100.0% 98.5% 0.12 9.05 0.00 --
24399 2022:037:07:25:18.629 4 -69.5 -186.8 9906 9661 12 98.3% 100.0% 100.0% 98.3% 0.06 9.03 0.00 --
28676 2024:301:02:19:38.548 3 10.3 -430.1 3747 3698 4 99.9% 99.9% 100.0% 99.8% 0.06 9.08 0.00 --
30586 2024:301:12:04:52.556 3 13.2 -430.3 4158 4107 2 100.0% 100.0% 100.0% 99.9% 0.07 9.08 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.