AGASC ID 807021208

Info

Last Obs. 2023:120:13:07
magcatalog 8.52 ± 0.10
mag3 arcsec 8.53 ± 0.01
mag5 arcsec 8.53 ± 0.01
Nobs 12 (0 bad)
fok 98.8%
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
4077 2003:178:15:55:18.433 5 -250.5 -346.5 9405 9401 5 100.0% 100.0% 100.0% 100.0% 0.02 8.54 0.00 --
22582 2019:363:14:32:54.254 6 247.9 367.7 24461 24093 20 98.5% 100.0% 100.0% 98.5% 0.04 8.52 0.00 --
23221 2020:107:07:40:53.814 6 237.9 374.8 7895 7786 6 98.6% 100.0% 100.0% 98.6% 0.03 8.53 0.00 --
23041 2020:109:12:51:18.068 6 237.7 375.0 6906 6844 13 99.1% 100.0% 100.0% 99.1% 0.03 8.53 0.00 --
23043 2020:133:11:11:40.173 5 -215.2 -375.0 9846 9771 16 99.2% 100.0% 100.0% 99.2% 0.03 8.52 0.00 --
23249 2020:135:21:44:40.816 5 -215.2 -375.0 14701 14622 17 99.5% 100.0% 100.0% 99.5% 0.04 8.52 0.00 --
22583 2020:143:19:04:52.172 6 -313.7 -302.8 14712 14422 12 98.0% 100.0% 100.0% 98.0% 0.05 8.54 0.00 --
23254 2020:144:11:45:58.060 6 -314.3 -302.6 9828 9642 21 98.1% 100.0% 100.0% 98.1% 0.03 8.54 0.00 --
23042 2021:102:06:05:07.030 6 279.4 342.3 12750 12604 22 98.9% 100.0% 100.0% 98.8% 0.05 8.53 0.00 --
25006 2021:102:19:09:47.144 6 278.6 342.7 10788 10717 13 99.3% 100.0% 100.0% 99.3% 0.04 8.53 0.00 --
25007 2021:106:15:42:17.969 6 280.4 341.9 8118 8009 13 98.7% 100.0% 100.0% 98.6% 0.04 8.53 0.00 --
27811 2023:120:13:07:03.176 4 427.8 250.8 2714 2686 3 99.0% 100.0% 100.0% 98.9% 0.04 8.54 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.