AGASC ID 1128273656

Info

Last Obs. 2022:293:05:26
magcatalog 7.66 ± 0.04
mag3 arcsec 7.61 ± 0.01
mag5 arcsec 7.61 ± 0.01
Nobs 13 (0 bad)
fok 99.9%
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 mag100s ⟨ mag ⟩ σmag Comments
3501 2003:235:18:05:40.907 3 -400.1 -188.2 17895 17890 15 100.0% 100.0% 100.0% 100.0% 0.01 7.61 0.00 --
6410 2006:248:15:30:21.414 5 -429.5 -101.6 24463 24428 15 100.0% 100.0% 100.0% 100.0% 0.01 7.62 0.00 --
6411 2006:271:05:29:28.925 3 -440.7 82.7 24462 24425 18 100.0% 100.0% 100.0% 100.0% 0.02 7.62 0.00 --
7423 2007:258:09:47:11.180 5 311.1 -383.1 10161 10158 8 100.0% 100.0% 100.0% 100.0% 0.01 7.61 0.00 --
9113 2008:118:00:51:21.933 6 482.4 -399.0 2528 2527 0 100.0% 100.0% 100.0% 100.0% 0.01 7.61 0.00 --
8910 2008:303:16:42:36.674 5 -196.2 -341.9 9736 9671 10 99.3% 100.0% 100.0% 99.3% 0.02 7.60 0.00 --
12151 2011:182:17:16:43.047 3 -64.1 -342.2 4948 4948 3 100.0% 100.0% 100.0% 100.0% 0.02 7.60 0.00 --
20133 2018:254:16:35:30.476 3 -442.2 22.3 12705 12681 14 99.8% 100.0% 100.0% 99.8% 0.02 7.61 0.00 --
21842 2018:256:22:33:16.184 3 -444.0 23.2 27980 27957 30 99.9% 100.0% 100.0% 99.9% 0.02 7.61 0.00 --
21847 2018:262:05:15:37.755 3 -443.2 22.7 35692 35679 25 100.0% 100.0% 100.0% 100.0% 0.02 7.61 0.00 --
21848 2018:264:20:58:21.943 3 -443.4 22.7 38600 38576 25 99.9% 100.0% 100.0% 99.9% 0.02 7.62 0.00 --
25194 2022:292:19:48:27.394 3 374.7 -209.6 7404 7396 4 99.9% 100.0% 100.0% 99.9% 0.02 7.63 0.00 --
27511 2022:293:05:26:52.924 3 373.7 -209.2 8847 8844 6 100.0% 100.0% 100.0% 100.0% 0.02 7.62 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.