AGASC ID 300941832

Info

Last Obs. 2024:243:02:04
magcatalog 8.93 ± 0.02
mag3 arcsec 8.95 ± 0.03
mag5 arcsec 8.95 ± 0.03
Nobs 12 (0 bad)
fok 99.4%
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
10865 2009:035:21:19:10.125 3 -70.8 -204.6 2587 2528 4 99.8% 100.0% 100.0% 99.8% 0.02 8.93 0.00 --
10866 2009:036:06:23:18.593 3 -70.8 -204.6 4050 3972 9 99.8% 100.0% 100.0% 99.8% 0.02 8.93 0.00 --
10867 2009:038:07:59:28.771 3 -70.8 -204.6 3561 3491 1 99.9% 100.0% 100.0% 99.9% 0.03 8.93 0.00 --
10536 2009:043:16:04:07.205 3 -62.0 -207.4 9172 9086 15 99.9% 100.0% 100.0% 99.9% 0.03 8.93 0.00 --
21718 2018:312:22:44:18.405 4 -146.4 -178.1 14576 14132 11 97.8% 100.0% 100.0% 97.7% 0.06 8.92 0.00 --
25227 2023:206:08:23:01.757 5 -257.1 -368.3 3806 3750 2 99.9% 99.9% 100.0% 99.9% 0.07 8.98 0.00 --
27962 2023:208:01:29:43.751 5 -284.0 -349.5 2775 2733 0 100.0% 100.0% 100.0% 100.0% 0.07 8.97 0.00 --
27963 2023:208:15:57:35.943 5 -252.2 -371.6 2693 2651 1 100.0% 100.0% 100.0% 100.0% 0.07 8.97 0.00 --
25864 2023:213:16:58:03.569 5 -239.3 -379.5 3828 3786 4 99.9% 99.9% 99.9% 99.8% 0.07 8.98 0.00 --
27973 2023:214:08:18:44.709 5 -237.9 -380.3 3770 3723 6 99.9% 99.9% 100.0% 99.8% 0.06 8.98 0.00 --
27407 2024:211:01:00:15.877 6 267.0 -462.4 4972 4915 3 100.0% 100.0% 100.0% 100.0% 0.08 9.00 0.00 --
27406 2024:243:02:04:16.617 5 179.2 -149.9 4971 4903 1 99.9% 100.0% 100.0% 99.9% 0.09 8.99 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.