AGASC ID 391518064

Info

Last Obs. 2023:007:14:45
magcatalog 8.51 ± 0.12
mag3 arcsec 8.68 ± 0.02
mag5 arcsec 8.68 ± 0.02
Nobs 13 (0 bad)
fok 98.2%
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
25747 2022:008:03:39:29.563 6 440.6 -284.2 9844 9681 12 98.4% 100.0% 100.0% 98.4% 0.03 8.70 0.00 --
26255 2022:008:15:39:21.594 6 440.8 -284.4 4943 4911 4 99.4% 100.0% 100.0% 99.4% 0.03 8.68 0.00 --
25757 2022:013:02:22:03.153 6 482.2 -212.1 10311 10191 17 98.8% 100.0% 100.0% 98.8% 0.04 8.69 0.00 --
25741 2022:015:20:59:52.779 5 483.9 -212.9 5823 5724 4 98.3% 100.0% 100.0% 98.3% 0.05 8.69 0.00 --
25758 2022:038:21:51:44.856 6 422.7 337.6 9356 9254 10 98.9% 100.0% 100.0% 98.9% 0.04 8.66 0.00 --
25752 2022:039:08:32:37.552 6 422.3 337.8 8380 8295 12 99.0% 100.0% 100.0% 99.0% 0.04 8.67 0.00 --
25753 2022:039:18:40:10.249 6 422.1 338.0 8380 8247 10 98.4% 100.0% 100.0% 98.4% 0.03 8.67 0.00 --
25754 2022:040:04:47:42.946 6 421.9 338.0 8127 7933 8 97.6% 100.0% 100.0% 97.6% 0.04 8.67 0.00 --
25751 2022:047:21:57:32.125 6 339.9 422.8 9850 9503 112 96.5% 99.8% 100.0% 96.3% 0.07 8.65 0.00 --
25744 2022:365:20:46:26.115 6 383.3 -359.1 4987 4845 5 97.2% 100.0% 100.0% 97.1% 0.05 8.68 0.00 --
25467 2023:002:03:25:27.222 6 390.9 -347.6 5223 5078 2 97.2% 100.0% 100.0% 97.2% 0.05 8.69 0.00 --
27630 2023:002:21:24:29.822 6 398.6 -342.4 6175 6061 8 98.2% 100.0% 100.0% 98.2% 0.05 8.68 0.00 --
27631 2023:007:14:45:37.544 5 437.0 -295.5 4203 4165 2 99.1% 100.0% 100.0% 99.0% 0.05 8.69 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.