Page History

2. ExoCTK updates
Nestor Espinoza (ExoCTK science lead) provided a brief summary of the objectives of the project: basically, to aid in the proposal preparation and data analysis of observations targetting the characterization of exoplanet atmospheres through transit/eclipse observations. Currently ongoing high-level tasks:

Nestor Espinoza

• This task relates to the training of the new ExoCTK science lead (Nestor Espinoza). This was done through contract with Kevin Stevenson (previous lead of ExoCTK who joined JHU). Almost done — contract ending this month.

Nestor Espinoza

Nestor Espinoza

• Sarah Kendrew asks about how the project is currently weighing contributions from the different instrument branches (i.e., through time spent answering questions to the ExoCTK members, or checking calculations, etc.). Nestor Espinoza acknowledges this has been a bit confusing in the past, but expects that given the project is transitioning to be oficially STScI supported, this will get clarified.

• How tickets get prioritized for different instruments is not clear right now (e.g., white-light wavelength range ticket assigned as critical for NIRCam but "only" high for MIRI). Sarah Kendrew mentions that DMS handles this on a case-by-case basis, and reaches out to instrument branches to check for discrepancies. In the case othe whie-light being flagged as "critical" by NIRCAM, Nikolay Nikolov explains that this is critical for them because the full wavelength range gives rise to just larger errors in the white-light lightcurves, which makes results not useful for both commissioning and science. Sarah Kendrew has added further comments to the ticket  

  Jira
  server STScI JIRA columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId aac911eb-9c55-3f14-8368-77b436fb6dc2 key JP-1469

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• Nikolay Nikolov is working with Bryan Hilbert  and Everett Schlawin on trying to get the best precision out of simulated data. This has led them to define parameter reference files to enable column-by-column background subtraction. This has to be customized for NIRCam, because currently there is only one for NIRISS.
  
  
• Sarah mentions that we should use the DMS notebook validation testing scheme to share results. Details are here: INS Validation Testing Preparation Meeting. There's a small form on this page that you can use to add yourself to the INS testers list (& be kept up to date).
  
  
• Tony Keyes mentions that NIRSpec started to run their CV3 data through the pipeline. Rectification step is not performed by default for NIRSpec, so that would have to be fixed apparently (see the corresponding Jira ticket). Also, there are some details about flat fields. Maria Peña-Guerrero is person in NIRSpec working on the DMS notebooks.

Nestor Espinoza

Brian Brooks Nikolay Nikolov

• Mainly pipeline testing (see above). Also looking at the ticket prioritization — with Bryan Hilbert and Brian Brooks , Nikolay Nikolov has a list of tickets.

Sarah Kendrew

• Nestor Espinoza  finally assigned the expert to work on the NIRSpec CV3 data, as that data has already been reduced by an independant pipeline (so that saves the person the time to learn how to use the CalWebb pipeline). Idea is for this person to look for possible sources of systematics in the data, and report back through a memo on lines that need more testing in order to be understood. 44 hours have been allocated to the expert on this topic.

• The expert has been allocated 20 hours on an advisory role in this project (to, e.g., define level of precision needed for atmospheric characterization studies). 

•  Brian Brooks and Nikolay Nikolov will get in touch with the expert to define how to move forward with this. Sarah Kendrew , Nestor Espinoza and Tony Keyes want to be invited to these meetings as well.

• Similarly to the above, 20 hours have been alllocated so the expert takes and advisory role on this project. 
• JWST TSO QL tool will follow established practices from the transiting exoplanet field (see guidelines).

•  Nikolay Nikolov will get in touch with the expert to define this work. Sarah Kendrew, Nestor Espinozaand Tony Keyeswant to be invited as well.

Had meeting with Julien Girard on this. Idea is to work on understanding how to use TSO + Coronography. He'll be sending simulated data on this.

Nestor Espinoza: The only unprioritized NIRISS-only ticket is JP-1177. This relates to the fact that an exposure with the F277w filter on NIRISS/SOSS can help disentangle contamination overlap between orders 1 and 2 at the red-end of order 1. This is already implemented in APT, and is in JDox, but not on the ETC. 

Nikolay Nikolov and Brian Brooks: NIRCam didn't have any unprioritized tickets, but we did add JP-1478 to the list. We also commented on the list of critical and high priority tickets. See attachment: NIRCam_comments

Tony Keyes: There are no NIRSpec-specific tickets in the unprioritized TSO Dashboard list, but we have filed JP-1488 (BOTS Data need to be rectified) and consider it CRITICAL priority.  We have reviewed the entire list of TSO Dashboard tickets (17613) and a separate NIRSpec DMS Dashboard (17609) and prepared a file with comments on NIRSpec-impact of all tickets.  We did not present any of these additional comments at today's meeting, but expect to do so in the future.