AGASC ID 36963280

Info

Last Obs. 2024:008:01:13
magcatalog 9.49 ± 0.07
mag3 arcsec 9.64 ± 0.03
mag5 arcsec 9.64 ± 0.03
Nobs 12 (0 bad)
fok 99.1%
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
4876 2003:328:22:49:34.000 7 478.7 11.7 20221 20118 11 99.9% 100.0% 100.0% 99.8% 0.04 9.61 0.00 --
4877 2004:041:03:30:52.173 7 474.8 77.4 18808 18728 12 99.9% 100.0% 100.0% 99.9% 0.03 9.62 0.00 --
4878 2004:117:20:41:00.456 7 -477.1 59.3 18393 18317 22 99.9% 100.0% 100.0% 99.9% 0.03 9.64 0.00 --
60261 2004:118:07:52:12.382 1 -317.4 228.4 3892 3845 6 99.8% 99.9% 100.0% 99.7% 0.03 9.60 0.00 --
4879 2004:210:03:22:44.433 7 -476.9 -28.9 19197 19065 18 99.6% 100.0% 100.0% 99.6% 0.03 9.63 0.00 --
7364 2007:015:08:26:27.404 6 469.4 52.5 1296 1237 3 99.8% 100.0% 100.0% 99.8% 0.02 9.64 0.00 --
54685 2012:113:05:21:46.396 1 -331.2 207.1 88 37 0 100.0% 100.0% 100.0% 100.0% 0.00 9.62 0.00 --
21815 2019:184:03:45:47.866 3 -490.8 20.2 14772 14375 29 97.7% 100.0% 100.0% 97.7% 0.08 9.66 0.00 --
22828 2020:188:13:24:57.232 3 -490.2 -17.2 14287 13746 14 96.7% 100.0% 100.0% 96.6% 0.13 9.68 0.00 --
25691 2022:179:05:26:52.850 6 -489.0 -12.0 14776 14462 15 98.4% 99.4% 100.0% 97.8% 0.13 9.67 0.00 --
27013 2024:007:16:56:25.520 6 470.1 41.3 4012 3935 0 99.8% 99.5% 100.0% 99.3% 0.15 9.66 0.00 --
29166 2024:008:01:13:51.842 6 469.9 41.7 4176 4099 3 99.9% 96.2% 100.0% 96.1% 0.16 9.67 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.