AGASC ID 1091864696

Info

Last Obs. 2024:153:11:45
magcatalog 6.82 ± 0.06
mag3 arcsec 6.84 ± 0.01
mag5 arcsec 6.84 ± 0.01
Nobs 14 (0 bad)
fok 100.0%
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
26498 2023:020:11:02:34.165 3 387.7 278.7 3517 3446 3 100.0% 100.0% 100.0% 100.0% 0.02 6.83 0.00 --
27668 2023:020:19:10:14.283 3 386.2 279.4 3510 3447 3 100.0% 100.0% 100.0% 100.0% 0.01 6.82 0.00 --
27243 2024:071:03:01:14.327 3 464.4 71.5 5466 5396 0 100.0% 100.0% 100.0% 100.0% 0.02 6.84 0.00 --
29329 2024:071:13:09:58.785 3 465.2 71.2 5464 5402 1 100.0% 100.0% 100.0% 100.0% 0.02 6.83 0.00 --
27241 2024:071:23:18:22.129 3 464.7 79.1 5342 5276 1 100.0% 100.0% 100.0% 100.0% 0.03 6.83 0.00 --
43577 2024:090:21:49:43.771 1 -439.3 -469.5 324 280 0 100.0% 100.0% 100.0% 100.0% 0.01 6.85 0.00 --
43573 2024:091:02:49:31.222 1 -439.9 -468.9 507 463 0 100.0% 100.0% 100.0% 100.0% 0.02 6.85 0.00 --
43571 2024:091:04:39:36.000 1 -440.1 -468.7 567 534 4 100.0% 100.0% 100.0% 100.0% 0.02 6.85 0.00 --
27242 2024:094:10:55:14.967 3 464.9 -53.0 6196 6129 1 100.0% 100.0% 100.0% 100.0% 0.02 6.85 0.00 --
43520 2024:107:01:23:36.000 1 -459.5 -307.8 463 409 0 100.0% 100.0% 100.0% 100.0% 0.02 6.86 0.00 --
27240 2024:148:05:47:52.492 3 264.0 -378.9 4239 4183 0 100.0% 100.0% 100.0% 100.0% 0.03 6.85 0.00 --
27245 2024:151:02:15:26.313 3 221.3 -404.2 4237 4174 1 100.0% 100.0% 100.0% 100.0% 0.02 6.85 0.00 --
29425 2024:151:13:21:46.287 3 213.9 -407.9 4103 4050 1 100.0% 100.0% 100.0% 100.0% 0.02 6.85 0.00 --
29426 2024:153:11:45:58.793 3 181.6 -422.6 2534 2481 0 100.0% 100.0% 100.0% 100.0% 0.02 6.85 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.