AGASC ID 1031287872

Info

Last Obs. 2024:160:08:29
magcatalog 7.27 ± 0.07
mag3 arcsec 7.23 ± 0.01
mag5 arcsec 7.23 ± 0.01
Nobs 12 (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 mag ⟩ 100s ⟨ mag ⟩ σmag Comments
58401 2007:130:06:22:57.719 0 -406.2 473.1 1651 1597 0 100.0% 100.0% 100.0% 100.0% 0.01 7.22 0.00 --
58396 2007:133:09:09:33.410 0 193.7 54.7 5174 5114 6 99.8% 100.0% 100.0% 99.8% 0.01 7.21 0.00 --
50065 2017:140:09:21:27.130 5 199.3 22.4 2397 2318 0 100.0% 100.0% 100.0% 100.0% 0.01 7.20 0.00 --
50064 2017:140:12:36:58.093 0 199.4 21.7 1151 1101 1 100.0% 100.0% 100.0% 100.0% 0.01 7.20 0.00 --
27041 2024:070:19:49:28.931 3 -314.3 -414.1 2558 2508 0 100.0% 100.0% 100.0% 100.0% 0.02 7.23 0.00 --
27040 2024:079:18:57:55.102 3 -281.7 -435.4 6893 6833 2 100.0% 100.0% 100.0% 100.0% 0.02 7.23 0.00 --
29335 2024:081:23:43:26.692 3 -312.5 -414.9 7401 7350 3 100.0% 100.0% 100.0% 100.0% 0.03 7.23 0.00 --
27037 2024:082:12:48:27.904 3 -368.9 -368.1 5937 5877 0 100.0% 100.0% 100.0% 100.0% 0.03 7.24 0.00 --
26499 2024:130:01:56:04.498 3 -457.9 -255.2 4716 4664 0 100.0% 100.0% 100.0% 100.0% 0.04 7.25 0.00 --
65521 2024:134:17:19:14.078 3 -479.9 -214.6 2396 2351 0 100.0% 100.0% 100.0% 100.0% 0.03 7.25 0.00 --
27038 2024:159:13:08:46.809 3 -344.7 414.9 3195 3140 0 100.0% 100.0% 100.0% 100.0% 0.03 7.23 0.00 --
28470 2024:160:08:29:38.744 3 -366.3 397.0 3500 3441 4 100.0% 100.0% 100.0% 100.0% 0.02 7.24 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.