24 µm Detector Response to Stims

Principal: Deborah Padgett
Deputy: James Muzerolle
Data Monkey(s):
Priority: Critical
Downlink Priority: Normal
Analysis Time: 1 hour
Last Updated:

Objective

Demonstrate that MIPS arrays respond to stimulators

Description

The CSMM is positioned at the 24 µm dark position, the stim is turned on, and data is taken. The process is repeated for all four of the 24 µm stim states: FLAT-LOW, FLAT-HIGH, FLOOD-LOW, FLOOD-HIGH. Housekeeping data regarding the stim voltages and/or currents will be monitored to ensure that the stims actually trigger.

Data Collected

For each stim setting, three DCEs are collected with stim on and stim off. All exposures are SUR 3 s. Twenty-four total 24 µm DCEs are taken. 


// EXP_WRITER_VERSION=610
// ****************************************************************************
//
// Creation Date: Wed Aug 07 11:26:35 PDT 2002
//
// Expansion File: /epi02/ostl/IOCweek56/exp/mips_ier115.exp
//  
//
// ****************************************************************************
//
// 
// Keyword Section
// 
IERID                         0x000000000000                          // IER Identifier
IERType                       MIPS                                    // Type of IET
IERVersion                    6.1.2 Final                             // Spotier Version
IERTitle                      mips_ier115                             // Title of IER
Target                        'mips_ier115'                           // Target Name
IERTargetType                 Any                                     // Target type of IER
Ra                                                                    // Target RA
Dec                                                                   // Target DEC
NaifId                                                                // NaifId for this IER
TotalExposureTime             92.27328                                // seconds
TotalExecutionTime            192.99999999999997                      // seconds
TotalSlewTime                 0.0                                     // seconds
TotalSettlingTime             0.0                                     // seconds
Slew Tax                      0.0                                     // seconds
Special Overhead              0.0                                     // seconds
TotalUplinkLoad               770                                     // bytes
TotalCommandStorageLoad       322                                     // bytes
TotalStringStorageLoad        159                                     // bytes
TotalNumberOfInstructions     33                                      // Instruction count
TotalDownlinkLoad             1877160                                 // bytes
CommandDCE                    24                                      // Number of DCEs commanded
TotalDCE                      72                                      // Number of DCEs in database
VisibilityRadius              0.0                                     // Visibility radius for this IER
Expedited                     'false'                                 // Expedited for downlink processing
StartTime                     2003-101T03:02:30.000                   // StartTime for this IER
BodyStartTime                 2003-101T16:36:22.805                   // BodyStartTime for this IER
Author                        'A.Noriega-Crespo'                      // Name of IER author
Version                       '2.1 MIPS-115'                          // Version number (set by Author)
Purpose                       '24umDetectorResponse'                  // Purpose of this IER
Notes                         'DMK+DLP concept'                       // General notes
//
// Expansion Section
//
00:00:00.000 START                                          // Meta command indicates start of expansion
00:00:00.000 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_ACTIVE_AORID_FLAGS          // global variable name
                             0x0000                         // value or expression
00:00:00.100 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_ACTIVE_AORID_KEY            // global variable name
                             0x00000000                     // value or expression
00:00:00.200 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_AOR_START_TIME              // global variable name
                             NOW                            // value or expression
// COMMENT: start w/mobs_photo
00:00:00.300 MIPS_MOBS_PHOTO                                // BLOCK: SSC change MIPS state from observe to photo
                             0x003c99a0                     // OPERCESTATE
// COMMENT: Set up the instrument for imaging
// COMMENT: CSMM @24um Position
00:00:05.500 CESCANPOS                                      //
                             101                            // posindex
                             'MIPS'                         // csmode
00:00:07.500 CEGERSTCON                                     //
                             10                             // ge160rst : 4 Ge frames
                             127                            // ge70rst : 4 Ge frames
                             4                              // rstdelay : 1 Ge frame
                             'MIPS'                         // csmode
00:00:08.500 CESCANCON                                      //
                             'CHOP'                         // scanmode
                             'FWD'                          // rampdir
                             0                              // scanpos2 : 18.901 arcsec
                             2048                           // relpos1 : 2.3626 arcsec
                             2048                           // relpos2 : 2.3626 arcsec
                             0                              // stepoffset : 2.3626 arcsec
                             511                            // rampslope : 0.1 msec/2.3626 arcsec
                             'MIPS'                         // csmode
// COMMENT: setup Si Stims
00:00:09.500 CESISTIM                                       //
                             'ALLOFF'                       // state
                             'LOW'                          // level
                             'MIPS'                         // csmode
00:00:10.500 CESCANPOS                                      //
                             101                            // posindex
                             'MIPS'                         // csmode
// COMMENT: tun on Si Stims
00:00:12.500 CESISTIM                                       //
                             'MIPSFLD'                      // state
                             'LOW'                          // level
                             'MIPS'                         // csmode
// COMMENT: take 3DCEs 4sec SUR
00:00:13.500 CEMIPSUR                                       //
                             0x0000                         // aorid_flags
                             0x00000000                     // aorid_key
                             0                              // expid
                             'NO_COADD'                     // coadd
                             3                              // framenum
                             3                              // numdce : DCEs
                             'MIPS'                         // csmode
// EXPOSURE_INFO: Exposure_Type = 'pht'
00:00:33.500 CESISTIM                                       //
                             'ALLOFF'                       // state
                             'LOW'                          // level
                             'MIPS'                         // csmode
// COMMENT: take 3DCEs 4sec SUR
00:00:34.500 CEMIPSUR                                       //
                             0x0000                         // aorid_flags
                             0x00000000                     // aorid_key
                             1                              // expid
                             'NO_COADD'                     // coadd
                             3                              // framenum
                             3                              // numdce : DCEs
                             'MIPS'                         // csmode
// EXPOSURE_INFO: Exposure_Type = 'pht'
00:00:54.500 CESISTIM                                       //
                             'MIPSFLAT'                     // state
                             'LOW'                          // level
                             'MIPS'                         // csmode
// COMMENT: take 3DCEs 4sec SUR
00:00:55.500 CEMIPSUR                                       //
                             0x0000                         // aorid_flags
                             0x00000000                     // aorid_key
                             2                              // expid
                             'NO_COADD'                     // coadd
                             3                              // framenum
                             3                              // numdce : DCEs
                             'MIPS'                         // csmode
// EXPOSURE_INFO: Exposure_Type = 'pht'
// COMMENT: turn off Si Stim
00:01:15.500 CESISTIM                                       //
                             'ALLOFF'                       // state
                             'LOW'                          // level
                             'MIPS'                         // csmode
00:01:16.500 CEMIPSUR                                       //
                             0x0000                         // aorid_flags
                             0x00000000                     // aorid_key
                             3                              // expid
                             'NO_COADD'                     // coadd
                             3                              // framenum
                             3                              // numdce : DCEs
                             'MIPS'                         // csmode
// EXPOSURE_INFO: Exposure_Type = 'pht'
// COMMENT: tun on Si Stims
00:01:36.500 CESISTIM                                       //
                             'MIPSFLD'                      // state
                             'HIGH'                         // level
                             'MIPS'                         // csmode
// COMMENT: take 3DCEs 4sec SUR
00:01:37.500 CEMIPSUR                                       //
                             0x0000                         // aorid_flags
                             0x00000000                     // aorid_key
                             4                              // expid
                             'NO_COADD'                     // coadd
                             3                              // framenum
                             3                              // numdce : DCEs
                             'MIPS'                         // csmode
// EXPOSURE_INFO: Exposure_Type = 'pht'
00:01:57.500 CESISTIM                                       //
                             'ALLOFF'                       // state
                             'HIGH'                         // level
                             'MIPS'                         // csmode
// COMMENT: take 3DCEs 4sec SUR
00:01:58.500 CEMIPSUR                                       //
                             0x0000                         // aorid_flags
                             0x00000000                     // aorid_key
                             5                              // expid
                             'NO_COADD'                     // coadd
                             3                              // framenum
                             3                              // numdce : DCEs
                             'MIPS'                         // csmode
// EXPOSURE_INFO: Exposure_Type = 'pht'
00:02:18.500 CESISTIM                                       //
                             'MIPSFLAT'                     // state
                             'HIGH'                         // level
                             'MIPS'                         // csmode
// COMMENT: take 3DCEs 4sec SUR
00:02:19.500 CEMIPSUR                                       //
                             0x0000                         // aorid_flags
                             0x00000000                     // aorid_key
                             6                              // expid
                             'NO_COADD'                     // coadd
                             3                              // framenum
                             3                              // numdce : DCEs
                             'MIPS'                         // csmode
// EXPOSURE_INFO: Exposure_Type = 'pht'
// COMMENT: turn off Si Stim
00:02:39.500 CESISTIM                                       //
                             'ALLOFF'                       // state
                             'HIGH'                         // level
                             'MIPS'                         // csmode
00:02:40.500 CEMIPSUR                                       //
                             0x0000                         // aorid_flags
                             0x00000000                     // aorid_key
                             7                              // expid
                             'NO_COADD'                     // coadd
                             3                              // framenum
                             3                              // numdce : DCEs
                             'MIPS'                         // csmode
// EXPOSURE_INFO: Exposure_Type = 'pht'
00:03:00.500 CESISTIM                                       //
                             'ALLOFF'                       // state
                             'HIGH'                         // level
                             'MIPS'                         // csmode
// COMMENT: move csmm @ Zero Power
00:03:01.500 CESCANPOS                                      //
                             0                              // posindex
                             'MIPS'                         // csmode
// COMMENT: end IER w/backto_mobs
00:03:03.500 MIPS_BACKTO_MOBS                               // BLOCK: SSC change MIPS state back to MIPS observe
                             0x0                            // OPERCESTATE
00:03:12.700 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_ACTIVE_AORID_FLAGS          // global variable name
                             0x0000                         // value or expression
00:03:12.800 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_ACTIVE_AORID_KEY            // global variable name
                             0x00000000                     // value or expression
00:03:12.900 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_AOR_END_TIME                // global variable name
                             NOW                            // value or expression
00:03:13.000 END                                            // Meta command indicates end of expansion

Data Reformatting Requirements

Array Data Desired:

24 µm

Data Reformatting Option:

Special Instructions:
Housekeeping telemetry is necessary for monitoring of stim currents during exposures. It is possible that all the necessary parameters will be in the MIPL headers. This task should be repeated if CE side B is used.

Task Dependencies

Calibration Dependencies

Output and Deliverable Products

The output of this test will be identification of working and non-working stims.

Data Analysis

The data analysis for this task can be limited to statistics on each DCE using fv, IRAF, or IDL. No calibration should be necessary. The image statistics will be associated with the stimulator current, etc. keywords in an ascii table to acertain whether the detector saw light when the stim was commanded on.

Software Requirements

Actions Following Analysis

Confirm that detector detects light from stim. If no light detected when telemetry indicates stim on, flag stim as inoperative. If light detected, but telemetry shows stim off, track telemetry error.

Failure Modes and Responses

Most likely failure mode of task is saturation of the 24 µm array during the test. If this occurs for the "stim on" exposures, the test should be repeated after a patchable constant change to dim the stim. However, since the purpose of the test is to acertain that the stims work, saturation due to overly bright stims is not as much of a problem as a saturating background. If the array is saturated with or without the stims, the test must be repeated at a lower telescope temperature.

Additional Notes