AGASC ID 44832752

Info

Last Obs. 2023:154:14:01
magcatalog 9.78 ± 0.15
mag3 arcsec 10.03 ± 0.06
mag5 arcsec 10.03 ± 0.06
Nobs 16 (0 bad)
fok 98.2%
f3 arcsec 98.4%
f5 arcsec 99.8%

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
15284 2013:135:11:43:22.385 5 293.3 -88.7 2042 2040 3 99.9% 100.0% 100.0% 99.9% 0.05 10.08 0.00 --
50134 2017:110:22:58:48.317 2 -28.4 -36.1 3207 3129 10 97.6% 98.2% 99.9% 95.8% 0.15 10.00 0.00 --
45474 2022:142:10:01:28.626 7 6.3 419.7 267 223 8 83.5% 89.7% 98.7% 74.9% 0.06 10.04 0.00 --
45472 2022:142:22:35:47.488 7 0.4 419.7 270 258 0 95.6% 100.0% 100.0% 95.6% 0.04 10.04 0.00 --
44515 2023:139:11:49:18.446 6 -357.7 377.6 269 269 0 100.0% 99.6% 100.0% 99.6% 0.10 10.10 0.00 --
44514 2023:139:18:23:59.163 6 -343.5 366.1 280 280 0 100.0% 97.1% 100.0% 97.1% 0.09 10.02 0.00 --
44513 2023:141:00:03:47.348 6 -357.7 377.6 265 265 1 100.0% 99.6% 99.6% 99.6% 0.04 10.05 0.00 --
44512 2023:141:06:20:41.513 6 -343.5 366.1 303 300 0 99.3% 100.0% 100.0% 99.3% 0.13 10.03 0.00 --
44503 2023:142:06:11:29.086 6 -343.5 366.1 264 264 0 100.0% 100.0% 100.0% 100.0% 0.13 10.02 0.00 --
44502 2023:142:13:36:12.125 6 -343.5 366.1 281 281 1 100.0% 99.3% 100.0% 99.3% 0.12 10.03 0.00 --
44501 2023:143:04:18:49.027 6 -343.5 366.1 264 263 0 100.0% 100.0% 100.0% 100.0% 0.10 10.01 0.00 --
44500 2023:143:12:40:12.030 6 -343.5 366.1 280 280 0 100.0% 100.0% 100.0% 100.0% 0.16 10.02 0.00 --
44482 2023:147:14:39:47.417 6 -357.7 377.6 266 266 0 100.0% 100.0% 100.0% 100.0% 0.11 10.04 0.00 --
44481 2023:147:22:32:45.345 6 -355.6 354.1 284 274 0 96.5% 85.0% 94.2% 82.0% 0.42 9.87 0.01 --
44465 2023:154:05:04:32.644 6 -343.5 366.1 261 260 1 99.6% 99.6% 100.0% 99.2% 0.11 10.05 0.00 --
44464 2023:154:14:01:00.365 6 -343.5 366.1 524 523 1 100.0% 97.5% 100.0% 97.5% 0.10 10.04 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.