Safe Mode Recovery Template Parameters

JWST's Safe Mode Recovery Template, available in the Astronomer’s Proposal Tool (APT), is used to recover a science instrument from a Safing event.

 Format definitions...

Purple text indicates the parameter is Limited Access.

Boldface italics type indicates the name of an APT parameter or a value for a parameter.

(warning)Red text indicates restrictions on a parameter.

(red star) Black text indicates an important note.

Brown text indicates notes for the developers.

Green text indicates the name of the parameter used by Commanding.

Items in brackets - <value> - are required values.

Items in square brackets - [<value>] - are optional.

The Safe Mode Recovery observation is used to recover a science instrument from a Safing event. The science instrument may be either powered off or on. The Special Requirements NO PARALLEL REALTIME, and REQUIRED are automatically set for this visit and may be removed if not needed.

This template requires a Between Special Requirement in order to force scheduling of the Safe Mode Recovery observation at a known time.

The following parameters are used to define Safe Mode Recovery observation. There are no exposures executed in this visit.

General Information
Observation Numberassign observation numbernumber
Observation Labelprovide observation labeltext
Observation Commentsprovide observation commentstext
Special Requirementsspecify special requirementschoose from listif needed
Template specific information
Science Instrumentselect science instrumentchoose from list
SI Power Stateselect SI power stateON, OFF
Durationspecify durationnumber

General Information  

The following parameters are generic to all templates, and are not discussed in this article: Observation Number,  Observation Label, Observation Comments,   and Special Requirements.

Science Instrument


Specify the science instrument that is being recovered from Safe.

SI Power State


Specify whether the SI state at the start of the visit is ON or OFF.



Amount of time required, in integer seconds, for the visit to complete. (warning)A value is required.

Change log

 Click here to expand...

Version 2 (April 19, 2019)

  1. Editorial change (moved change log to main article)

Version 1 (May 22, 2017)

  1. This is the converted Word File from Chapter 70.