AGASC ID 166332720

Info

Last Obs. 2024:051:23:23
magcatalog 7.13 ± 0.05
mag3 arcsec 7.14 ± 0.01
mag5 arcsec 7.14 ± 0.01
Nobs 13 (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
5381 2005:300:11:36:23.001 3 395.0 419.9 47951 47890 22 100.0% 100.0% 100.0% 100.0% 0.01 7.15 0.00 --
11001 2009:361:17:52:11.518 3 -453.9 -240.5 2845 2792 0 100.0% 100.0% 100.0% 100.0% 0.01 7.15 0.00 --
11016 2009:363:10:28:37.873 3 -319.0 -471.5 32663 32597 30 100.0% 100.0% 100.0% 100.0% 0.01 7.14 0.00 --
21946 2018:297:16:20:25.218 3 470.1 437.7 5298 5231 4 100.0% 100.0% 100.0% 100.0% 0.01 7.14 0.00 --
20160 2018:299:06:09:08.953 3 470.4 437.5 19658 19601 20 100.0% 100.0% 100.0% 100.0% 0.01 7.13 0.00 --
21947 2018:300:06:45:20.529 3 470.5 437.4 5375 5313 5 100.0% 100.0% 100.0% 100.0% 0.01 7.14 0.00 --
21948 2018:300:14:47:35.208 3 471.0 437.2 26915 26842 29 100.0% 100.0% 100.0% 100.0% 0.01 7.14 0.00 --
20161 2018:301:21:34:34.592 3 471.3 437.1 23075 23011 21 100.0% 100.0% 100.0% 100.0% 0.01 7.14 0.00 --
21950 2018:303:17:06:11.831 3 471.4 437.0 6413 6350 9 100.0% 100.0% 100.0% 100.0% 0.01 7.14 0.00 --
21951 2018:304:12:53:41.410 3 470.9 437.3 17218 17162 12 100.0% 100.0% 100.0% 100.0% 0.01 7.14 0.00 --
21952 2018:306:09:40:09.805 3 471.1 437.2 5601 5552 6 100.0% 100.0% 100.0% 100.0% 0.01 7.14 0.00 --
21953 2018:307:04:32:11.215 3 470.6 437.4 17220 17157 8 100.0% 100.0% 100.0% 100.0% 0.01 7.14 0.00 --
27978 2024:051:23:23:25.000 4 -259.6 -1.8 1330 1267 0 100.0% 100.0% 100.0% 100.0% 0.04 7.19 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.