Execution Block ID uid://A001/X15a0/X100 Sgr_A_st_q_03_TM1

keflavich commented 2 years ago

[x] Observations completed?
[x] Delivered?
[x] Downloaded? (specify where)
- [x] hipergator
- [x] hipergator pipeline run
- Pipeline Run 20220707T181209
- Pipeline Run 20220625T155644
- Pipeline Run 20220625T142156
[x] Weblog unpacked
[x] Weblog Quality Assessment?
[x] Imaging: Continuum
[x] Imaging: Lines
- [x] SPW25 H13CN
- [x] SPW27 H13CO+/SiO
- [x] SPW29 HCO+
- [x] SPW31 HNCO
- [x] SPW33 Cont 1
- [x] SPW35 Cont 2

Product Links:

Reprocessed Product Links:

keflavich commented 2 years ago

$ ls -lh *X100*
-rw-r--r-- 1 adamginsburg adamginsburg 148G Jun 11 19:58 2021.1.00172.L_uid___A001_X15a0_X100_001_of_001.tar
-rw-r--r-- 1 adamginsburg adamginsburg 1.1G Jun 11 20:00 2021.1.00172.L_uid___A001_X15a0_X100_auxiliary.tar
-rw-r--r-- 1 adamginsburg adamginsburg 3.5K Jun 11 16:52 member.uid___A001_X15a0_X100.README.txt
$ md5sum *X100*
55efd24d96d542a82c8cd0af8ac77c48  2021.1.00172.L_uid___A001_X15a0_X100_001_of_001.tar
f0f6f6ea6d6d1009b1c7e88078b38df5  2021.1.00172.L_uid___A001_X15a0_X100_auxiliary.tar
45243dd5a6a80b5da300bb9d2ff21537  member.uid___A001_X15a0_X100.README.txt
$ tar tvf 2021.1.00172.L_uid___A001_X15a0_X100_001_of_001.tar
$ tar tvf 2021.1.00172.L_uid___A001_X15a0_X100_auxiliary.tar

xinglunju commented 2 years ago

Calibration

Three EBs in this data. Spectral features in the phase calibrator J1744 have been properly flagged.
step 16. hifa_gfluxscale: the three EBs were executed 4 days apart, but the derived flux of J1744 is different by ~4% (476 mJy vs. 458 mJy). Could this be a problem? Also, the age of the catalog flux for J1744 is more than 180 days old. Shouldn't JAO monitor the flux of J1744 and update their catalog more often than this?
step 19. Phase scatter in calibrated phase vs time plots for two EBs. Could be minor, and I have noted it in #178.

Continuum imaging

step 31. hif_findcont: continuum identification of spw 29, a line is covered.
As a result, in 34. hif_makeimages (mfs), the continuum image of spw 29 shows many diffuse features.
step 36: The aggregate continuum image looks OK, but the beam size could be too large (2.02 x 1.55 arcsec, geometric mean = 1.77").

Line imaging

spw 33 is size-mitigated. It has been added to the json file for imaging, but hasn't appeared in globus yet, so I will check its image later.
spw 29: QA warning -- MOM8 FC image for field Sgr_A_star spw 29 with a peak SNR of 13.136 indicates that there may be residual line emission in the findcont channels. See the mom0 map below. This is related to the findcont issue above.
Beam sizes too large: for spw 25/27/29/31, the beam sizes are 2.43" x 1.86" or even larger. For spw 35, the beam size is also a bit large: 1.99" x 1.52" (geometric mean = 1.74").
Almost ~20 point sources in spw25 by eye, likely SiO v=1 masers. Otherwise, images look good.

Remaining issues

Reimaging spw 29 and continuum after improving the line-free channel identification?

keflavich commented 2 years ago

Calibrator flux plots (via https://almascience.nrao.edu/sc/):

keflavich commented 2 years ago

@xinglunju could you verify that the re-imaged, un-mitigated cubes exist and look good?

xinglunju commented 1 year ago

Downloaded spw33 cube from globus and it looks great, so I mark this one as done.

xinglunju commented 8 months ago

QA - Line contamination in continuum images from high/low frequencies

Line contamination in spw25_27. Otherwise, the images look good.

Attached images: Top-left: spw33_35 Top-right: oldhigh_spw33_35 Bottom-left: spw25_27 Bottom-right: spw25_27_29_31_33_35

Further checking the mfs continuum images of spw 25 and 27. However they both look good, so not sure which spw is contaminating the spw25_27 image.

Attached images: Top-left: spw33_35 Top-right: spw25_27 Bottom-left: spw25 mfs Bottom-right: spw27 mfs

xinglunju commented 7 months ago

Updated continuum QA (20240403)

The images look good. No sign of line contamination in spw25_27.

Attached images: Top-left: spw33_35 Top-right: old spw33_35 (v1.1) Bottom-left: spw25_27 Bottom-right: spw25_27_29_31_33_35

ACES-CMZ / reduction_ACES