AGASC ID 837550944

Info

Last Obs. 2023:119:18:25
magcatalog 9.51 ± 0.09
mag3 arcsec 9.54 ± 0.04
mag5 arcsec 9.54 ± 0.04
Nobs 13 (0 bad)
fok 98.2%
f3 arcsec 99.8%
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
12828 2011:269:20:23:37.709 6 -79.2 -223.3 79918 78589 89 98.3% 100.0% 100.0% 98.3% 0.05 9.52 0.00 --
12829 2011:272:06:45:59.701 6 -79.2 -223.3 91996 90620 107 98.5% 100.0% 100.0% 98.5% 0.05 9.52 0.00 --
55153 2011:274:11:40:53.663 4 -79.2 -223.3 46 46 0 100.0% 100.0% 100.0% 100.0% 0.01 9.51 0.00 --
12830 2011:274:22:42:04.425 6 -79.2 -223.3 24113 23780 26 98.6% 100.0% 100.0% 98.6% 0.05 9.52 0.00 --
54698 2012:108:03:32:45.663 5 -319.9 351.0 291 286 7 98.3% 97.6% 99.0% 95.9% 0.02 9.51 0.00 --
54688 2012:110:19:39:57.994 4 -315.3 355.4 101 93 0 92.1% 100.0% 100.0% 92.1% 0.02 9.49 0.00 --
52578 2014:217:23:35:47.897 7 -417.9 -213.7 3170 3161 9 99.7% 99.8% 100.0% 99.5% 0.05 9.54 0.00 --
24785 2021:243:11:56:19.194 6 193.3 -134.5 16181 15599 18 96.4% 98.2% 99.5% 94.7% 0.22 9.62 0.00 --
24784 2021:245:12:49:45.504 6 190.7 -133.3 12303 11658 19 98.4% 100.0% 100.0% 98.3% 0.11 9.65 0.00 --
24714 2022:010:07:50:26.003 6 -174.8 -169.6 10795 10477 11 97.1% 100.0% 100.0% 97.0% 0.10 9.55 0.00 --
25991 2023:114:10:43:27.823 7 103.4 232.3 3648 3615 2 99.1% 99.6% 100.0% 98.7% 0.13 9.58 0.00 --
24466 2023:118:03:07:17.417 7 111.2 228.1 3614 3575 3 98.9% 94.6% 100.0% 93.6% 0.11 9.55 0.00 --
27817 2023:119:18:25:25.453 7 109.6 229.1 2523 2465 4 97.7% 97.1% 99.8% 94.9% 0.09 9.55 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.