24 um Dark Verification

Principal: James Muzerolle
Deputy: Karl Gordon
Data Monkey(s): Kate Su, Casey Papovich
Priority: Necessary
Downlink Priority: Normal
Analysis Time: 24 hours
Last Updated:

Objective

Verify expected counts in dark current measurements with different exposure times.

Description

Point to the 24 µm dark position, acquire dark measurements at 3, 4, 10, and 30 seconds, and compare the resulting counts.

Data Collected

Darks will be obtained using the standard 24 µm dark IERs, which acquire 101, 77, 35, and 13 DCEs at 3, 4, 10, and 30 second exposure times, respectively, in SUR mode. 


// EXP_WRITER_VERSION=610
// ****************************************************************************
//
// Creation Date: Mon Oct 21 22:16:55 PDT 2002
//
// Expansion File: /epi02/ioc/m190/mips_drk24um_10s35.exp
//  
//
// ****************************************************************************
//
// 
// Keyword Section
// 
IERID                         0x000000000000                          // IER Identifier
IERType                       MIPS                                    // Type of IET
IERVersion                    6.2.9 Final                             // Spotier Version
IERTitle                      drk24um_10s35                           // Title of IER
Target                        'dark24um_10s35'                        // Target Name
IERTargetType                 Fixed                                   // Target type of IER
Ra                            17:15:50.00                             // Target RA
Dec                           +65:25:25.400                           // Target DEC
NaifId                                                                // NaifId for this IER
TotalExposureTime             365.94744                               // seconds
TotalExecutionTime            423.1000000000001                       // seconds
TotalSlewTime                 0.0                                     // seconds
TotalSettlingTime             0.0                                     // seconds
Slew Tax                      0.0                                     // seconds
Special Overhead              0.0                                     // seconds
TotalUplinkLoad               391                                     // bytes
TotalCommandStorageLoad       96                                      // bytes
TotalStringStorageLoad        156                                     // bytes
TotalNumberOfInstructions     36                                      // Instruction count
TotalDownlinkLoad             7147153                                 // bytes
CommandDCE                    35                                      // Number of DCEs commanded
TotalDCE                      105                                     // Number of DCEs in database
VisibilityRadius              0.0                                     // Visibility radius for this IER
Expedited                     'false'                                 // Expedited for downlink processing
StartTime                     2003-106T14:02:30.000                   // StartTime for this IER
BodyStartTime                 2003-106T14:02:30.000                   // BodyStartTime for this IER
Author                        'A.Noriega-Crespo'                      // Name of IER author
Version                       '2.2  for MIPS-190'                     // Version number (set by Author)
Purpose                       '24um Darks'                            // Purpose of this IER
Notes                         'KG+CE+DMK+ANC+JM inputs'               // 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
00:00:00.300 INITIAL_SLEW_FIXED                             // BLOCK: SSC slew to fixed science target
                             99                             // FOVNUM
                             932250000                      // RA
                             235525400                      // DEC
                             0                              // RCA
                             0                              // DELTA_EAST
                             0                              // DELTA_NORTH
                             0                              // DELTA_V
                             0                              // DELTA_W
                             4                              // EXPOSURE_LENGTH
                             200                            // SIGMA
                             0.0                            // PCRS_DET_SETTLE_TIME_1
// SLEW MODEL: delT - 0.30000000000000004
// SLEW MODEL: raUC - 932250000
// SLEW MODEL: decUC - 235525400
// SLEW MODEL: pmRa - 0.0
// SLEW MODEL: pmDec - 0.0
// SLEW MODEL: startTime - 2003-106T14:02:30.000
// COMMENT: start IER w/MIPS_PHOTO
00:00:08.400 MIPS_MOBS_PHOTO                                // BLOCK: SSC change MIPS state from observe to photo
                             0x003C99A0                     // OPERCESTATE
// COMMENT: Set up the instrument for imaging
00:00:13.600 CESCANPOS                                      //
                             101                            // posindex
                             'MIPS'                         // csmode
00:00:15.600 CEGERSTCON                                     //
                             10                             // ge160rst : 4 Ge frames
                             127                            // ge70rst : 4 Ge frames
                             4                              // rstdelay : 1 Ge frame
                             'MIPS'                         // csmode
00:00:16.600 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
00:00:17.600 CESISTIM                                       //
                             'ALLOFF'                       // state
                             'LOW'                          // level
                             'MIPS'                         // csmode
// COMMENT: move csmm @24um dark
// COMMENT: take 35 DCEs 10sec darks
00:00:18.600 CEMIPSUR                                       //
                             0x0000                         // aorid_flags
                             0x00000000                     // aorid_key
                             0                              // expid
                             'NO_COADD'                     // coadd
                             9                              // framenum
                             35                             // numdce : DCEs
                             'MIPS'                         // csmode
// EXPOSURE_INFO: Exposure_Type = 'd1'
// COMMENT: end IER w/backto_mobs
00:06:49.600 MIPS_BACKTO_MOBS                               // BLOCK: SSC change MIPS state back to MIPS observe
                             0x003C99A0                     // OPERCESTATE
00:06:59.800 PCS_ATT_DET                                    //
                             'PCS_OBS_B'                    // observer
00:07:00.800 PCS_LOWRATE_MODE                               //
                             'DISABLE'                      // rate_select
00:07:01.800 PCS_PRI                                        //
                             'DISABLE'                      // disable_enable
00:07:02.800 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_ACTIVE_AORID_FLAGS          // global variable name
                             0x0000                         // value or expression
00:07:02.900 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_ACTIVE_AORID_KEY            // global variable name
                             0x00000000                     // value or expression
00:07:03.000 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_AOR_END_TIME                // global variable name
                             NOW                            // value or expression
00:07:03.100 END                                            // Meta command indicates end of expansion



// EXP_WRITER_VERSION=610
// ****************************************************************************
//
// Creation Date: Mon Oct 21 22:17:50 PDT 2002
//
// Expansion File: /epi02/ioc/m190/mips_drk24um_30s13.exp
//  
//
// ****************************************************************************
//
// 
// Keyword Section
// 
IERID                         0x000000000000                          // IER Identifier
IERType                       MIPS                                    // Type of IET
IERVersion                    6.2.9 Final                             // Spotier Version
IERTitle                      dark24um_30s13                          // Title of IER
Target                        'dark24um_30s13'                        // Target Name
IERTargetType                 Fixed                                   // Target type of IER
Ra                            17:15:50.00                             // Target RA
Dec                           +65:25:25.400                           // Target DEC
NaifId                                                                // NaifId for this IER
TotalExposureTime             407.88984                               // seconds
TotalExecutionTime            453.1000000000001                       // seconds
TotalSlewTime                 0.0                                     // seconds
TotalSettlingTime             0.0                                     // seconds
Slew Tax                      0.0                                     // seconds
Special Overhead              0.0                                     // seconds
TotalUplinkLoad               391                                     // bytes
TotalCommandStorageLoad       96                                      // bytes
TotalStringStorageLoad        156                                     // bytes
TotalNumberOfInstructions     36                                      // Instruction count
TotalDownlinkLoad             7097382                                 // bytes
CommandDCE                    13                                      // Number of DCEs commanded
TotalDCE                      39                                      // Number of DCEs in database
VisibilityRadius              0.0                                     // Visibility radius for this IER
Expedited                     'false'                                 // Expedited for downlink processing
StartTime                     2003-106T21:02:30.000                   // StartTime for this IER
BodyStartTime                 2003-106T21:02:30.000                   // BodyStartTime for this IER
Author                        'A.Noriega-Crespo'                      // Name of IER author
Version                       '2.2 for MIPS-190'                      // Version number (set by Author)
Purpose                       '24um darks'                            // Purpose of this IER
Notes                         'KG+CE+DMK+ANC+JM inputs'               // 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
00:00:00.300 INITIAL_SLEW_FIXED                             // BLOCK: SSC slew to fixed science target
                             99                             // FOVNUM
                             932250000                      // RA
                             235525400                      // DEC
                             0                              // RCA
                             0                              // DELTA_EAST
                             0                              // DELTA_NORTH
                             0                              // DELTA_V
                             0                              // DELTA_W
                             4                              // EXPOSURE_LENGTH
                             200                            // SIGMA
                             0.0                            // PCRS_DET_SETTLE_TIME_1
// SLEW MODEL: delT - 0.30000000000000004
// SLEW MODEL: raUC - 932250000
// SLEW MODEL: decUC - 235525400
// SLEW MODEL: pmRa - 0.0
// SLEW MODEL: pmDec - 0.0
// SLEW MODEL: startTime - 2003-106T21:02:30.000
// COMMENT: start IER w/MIPS_PHOTO
00:00:08.400 MIPS_MOBS_PHOTO                                // BLOCK: SSC change MIPS state from observe to photo
                             0x003C99A0                     // OPERCESTATE
// COMMENT: Set up the instrument for imaging
00:00:13.600 CESCANPOS                                      //
                             101                            // posindex
                             'MIPS'                         // csmode
00:00:15.600 CEGERSTCON                                     //
                             10                             // ge160rst : 4 Ge frames
                             127                            // ge70rst : 4 Ge frames
                             4                              // rstdelay : 1 Ge frame
                             'MIPS'                         // csmode
00:00:16.600 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
00:00:17.600 CESISTIM                                       //
                             'ALLOFF'                       // state
                             'LOW'                          // level
                             'MIPS'                         // csmode
// COMMENT: move csmm @24um dark
// COMMENT: take 13 DCEs 30sec darks
00:00:18.600 CEMIPSUR                                       //
                             0x0000                         // aorid_flags
                             0x00000000                     // aorid_key
                             0                              // expid
                             'NO_COADD'                     // coadd
                             29                             // framenum
                             13                             // numdce : DCEs
                             'MIPS'                         // csmode
// EXPOSURE_INFO: Exposure_Type = 'd1'
// COMMENT: end IER w/backto_mobs
00:07:19.600 MIPS_BACKTO_MOBS                               // BLOCK: SSC change MIPS state back to MIPS observe
                             0x003C99A0                     // OPERCESTATE
00:07:29.800 PCS_ATT_DET                                    //
                             'PCS_OBS_B'                    // observer
00:07:30.800 PCS_LOWRATE_MODE                               //
                             'DISABLE'                      // rate_select
00:07:31.800 PCS_PRI                                        //
                             'DISABLE'                      // disable_enable
00:07:32.800 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_ACTIVE_AORID_FLAGS          // global variable name
                             0x0000                         // value or expression
00:07:32.900 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_ACTIVE_AORID_KEY            // global variable name
                             0x00000000                     // value or expression
00:07:33.000 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_AOR_END_TIME                // global variable name
                             NOW                            // value or expression
00:07:33.100 END                                            // Meta command indicates end of expansion



// EXP_WRITER_VERSION=610
// ****************************************************************************
//
// Creation Date: Mon Oct 21 22:18:41 PDT 2002
//
// Expansion File: /epi02/ioc/m190/mips_drk24um_3s101.exp
//  
//
// ****************************************************************************
//
// 
// Keyword Section
// 
IERID                         0x000000000000                          // IER Identifier
IERType                       MIPS                                    // Type of IET
IERVersion                    6.2.9 Final                             // Spotier Version
IERTitle                      dark24um_3s101                          // Title of IER
Target                        'dark24um_3s101'                        // Target Name
IERTargetType                 Fixed                                   // Target type of IER
Ra                            17:15:50.00                             // Target RA
Dec                           +65:25:25.400                           // Target DEC
NaifId                                                                // NaifId for this IER
TotalExposureTime             316.66512                               // seconds
TotalExecutionTime            408.1000000000001                       // seconds
TotalSlewTime                 0.0                                     // seconds
TotalSettlingTime             0.0                                     // seconds
Slew Tax                      0.0                                     // seconds
Special Overhead              0.0                                     // seconds
TotalUplinkLoad               391                                     // bytes
TotalCommandStorageLoad       96                                      // bytes
TotalStringStorageLoad        156                                     // bytes
TotalNumberOfInstructions     36                                      // Instruction count
TotalDownlinkLoad             8543844                                 // bytes
CommandDCE                    101                                     // Number of DCEs commanded
TotalDCE                      303                                     // Number of DCEs in database
VisibilityRadius              0.0                                     // Visibility radius for this IER
Expedited                     'false'                                 // Expedited for downlink processing
StartTime                     2003-106T21:02:30.000                   // StartTime for this IER
BodyStartTime                 2003-106T21:02:30.000                   // BodyStartTime for this IER
Author                        'A.Noriega-Crespo'                      // Name of IER author
Version                       '2.2 for MIPS-190'                      // Version number (set by Author)
Purpose                       '24um Darks'                            // Purpose of this IER
Notes                         'KG+CE+DMK+ANC+JM inputs'               // 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
00:00:00.300 INITIAL_SLEW_FIXED                             // BLOCK: SSC slew to fixed science target
                             99                             // FOVNUM
                             932250000                      // RA
                             235525400                      // DEC
                             0                              // RCA
                             0                              // DELTA_EAST
                             0                              // DELTA_NORTH
                             0                              // DELTA_V
                             0                              // DELTA_W
                             4                              // EXPOSURE_LENGTH
                             200                            // SIGMA
                             0.0                            // PCRS_DET_SETTLE_TIME_1
// SLEW MODEL: delT - 0.30000000000000004
// SLEW MODEL: raUC - 932250000
// SLEW MODEL: decUC - 235525400
// SLEW MODEL: pmRa - 0.0
// SLEW MODEL: pmDec - 0.0
// SLEW MODEL: startTime - 2003-106T21:02:30.000
// COMMENT: start IER w/MIPS_PHOTO
00:00:08.400 MIPS_MOBS_PHOTO                                // BLOCK: SSC change MIPS state from observe to photo
                             0x003C99A0                     // OPERCESTATE
// COMMENT: Set up the instrument for imaging
00:00:13.600 CESCANPOS                                      //
                             101                            // posindex
                             'MIPS'                         // csmode
00:00:15.600 CEGERSTCON                                     //
                             10                             // ge160rst : 4 Ge frames
                             127                            // ge70rst : 4 Ge frames
                             4                              // rstdelay : 1 Ge frame
                             'MIPS'                         // csmode
00:00:16.600 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
00:00:17.600 CESISTIM                                       //
                             'ALLOFF'                       // state
                             'LOW'                          // level
                             'MIPS'                         // csmode
// COMMENT: move csmm @24um dark
// COMMENT: take 101 DCEs 3sec darks
00:00:18.600 CEMIPSUR                                       //
                             0x0000                         // aorid_flags
                             0x00000000                     // aorid_key
                             0                              // expid
                             'NO_COADD'                     // coadd
                             2                              // framenum
                             101                            // numdce : DCEs
                             'MIPS'                         // csmode
// EXPOSURE_INFO: Exposure_Type = 'd1'
// COMMENT: end IER w/backto_mobs
00:06:34.600 MIPS_BACKTO_MOBS                               // BLOCK: SSC change MIPS state back to MIPS observe
                             0x003C99A0                     // OPERCESTATE
00:06:44.800 PCS_ATT_DET                                    //
                             'PCS_OBS_B'                    // observer
00:06:45.800 PCS_LOWRATE_MODE                               //
                             'DISABLE'                      // rate_select
00:06:46.800 PCS_PRI                                        //
                             'DISABLE'                      // disable_enable
00:06:47.800 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_ACTIVE_AORID_FLAGS          // global variable name
                             0x0000                         // value or expression
00:06:47.900 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_ACTIVE_AORID_KEY            // global variable name
                             0x00000000                     // value or expression
00:06:48.000 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_AOR_END_TIME                // global variable name
                             NOW                            // value or expression
00:06:48.100 END                                            // Meta command indicates end of expansion



// EXP_WRITER_VERSION=610
// ****************************************************************************
//
// Creation Date: Mon Oct 21 22:19:50 PDT 2002
//
// Expansion File: /epi02/ioc/m190/mips_drk24um_4s77.exp
//  
//
// ****************************************************************************
//
// 
// Keyword Section
// 
IERID                         0x000000000000                          // IER Identifier
IERType                       MIPS                                    // Type of IET
IERVersion                    6.2.9 Final                             // Spotier Version
IERTitle                      drk24um_4s77                            // Title of IER
Target                        'drk24um_4s77'                          // Target Name
IERTargetType                 Fixed                                   // Target type of IER
Ra                            17:15:50.00                             // Target RA
Dec                           +65:25:25.400                           // Target DEC
NaifId                                                                // NaifId for this IER
TotalExposureTime             321.90792                               // seconds
TotalExecutionTime            401.1000000000001                       // seconds
TotalSlewTime                 0.0                                     // seconds
TotalSettlingTime             0.0                                     // seconds
Slew Tax                      0.0                                     // seconds
Special Overhead              0.0                                     // seconds
TotalUplinkLoad               391                                     // bytes
TotalCommandStorageLoad       96                                      // bytes
TotalStringStorageLoad        156                                     // bytes
TotalNumberOfInstructions     36                                      // Instruction count
TotalDownlinkLoad             7829354                                 // bytes
CommandDCE                    77                                      // Number of DCEs commanded
TotalDCE                      231                                     // Number of DCEs in database
VisibilityRadius              0.0                                     // Visibility radius for this IER
Expedited                     'false'                                 // Expedited for downlink processing
StartTime                     2003-106T14:02:30.000                   // StartTime for this IER
BodyStartTime                 2003-106T14:02:30.000                   // BodyStartTime for this IER
Author                        'A.Noriega-Crespo'                      // Name of IER author
Version                       '2.2 for MIPS-190'                      // Version number (set by Author)
Purpose                       '24um Darks'                            // Purpose of this IER
Notes                         'KG+CE+DMK+ANC+JM inputs'               // 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
00:00:00.300 INITIAL_SLEW_FIXED                             // BLOCK: SSC slew to fixed science target
                             99                             // FOVNUM
                             932250000                      // RA
                             235525400                      // DEC
                             0                              // RCA
                             0                              // DELTA_EAST
                             0                              // DELTA_NORTH
                             0                              // DELTA_V
                             0                              // DELTA_W
                             4                              // EXPOSURE_LENGTH
                             200                            // SIGMA
                             0.0                            // PCRS_DET_SETTLE_TIME_1
// SLEW MODEL: delT - 0.30000000000000004
// SLEW MODEL: raUC - 932250000
// SLEW MODEL: decUC - 235525400
// SLEW MODEL: pmRa - 0.0
// SLEW MODEL: pmDec - 0.0
// SLEW MODEL: startTime - 2003-106T14:02:30.000
// COMMENT: start IER w/MIPS_PHOTO
00:00:08.400 MIPS_MOBS_PHOTO                                // BLOCK: SSC change MIPS state from observe to photo
                             0x003C99A0                     // OPERCESTATE
// COMMENT: Set up the instrument for imaging
00:00:13.600 CESCANPOS                                      //
                             101                            // posindex
                             'MIPS'                         // csmode
// COMMENT: Set up the instrument for imaging
00:00:15.600 CEGERSTCON                                     //
                             10                             // ge160rst : 4 Ge frames
                             127                            // ge70rst : 4 Ge frames
                             4                              // rstdelay : 1 Ge frame
                             'MIPS'                         // csmode
00:00:16.600 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
00:00:17.600 CESISTIM                                       //
                             'ALLOFF'                       // state
                             'LOW'                          // level
                             'MIPS'                         // csmode
// COMMENT: move csmm @24um dark
// COMMENT: take 77 DCEs 4sec darks
00:00:18.600 CEMIPSUR                                       //
                             0x0000                         // aorid_flags
                             0x00000000                     // aorid_key
                             0                              // expid
                             'NO_COADD'                     // coadd
                             3                              // framenum
                             77                             // numdce : DCEs
                             'MIPS'                         // csmode
// EXPOSURE_INFO: Exposure_Type = 'd1'
// COMMENT: end IER w/backto_mobs
00:06:27.600 MIPS_BACKTO_MOBS                               // BLOCK: SSC change MIPS state back to MIPS observe
                             0x003C99A0                     // OPERCESTATE
00:06:37.800 PCS_ATT_DET                                    //
                             'PCS_OBS_B'                    // observer
00:06:38.800 PCS_LOWRATE_MODE                               //
                             'DISABLE'                      // rate_select
00:06:39.800 PCS_PRI                                        //
                             'DISABLE'                      // disable_enable
00:06:40.800 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_ACTIVE_AORID_FLAGS          // global variable name
                             0x0000                         // value or expression
00:06:40.900 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_ACTIVE_AORID_KEY            // global variable name
                             0x00000000                     // value or expression
00:06:41.000 VML_EVAL                                       // Place holder for VML EVAL construct
                             GV_AOR_END_TIME                // global variable name
                             NOW                            // value or expression
00:06:41.100 END                                            // Meta command indicates end of expansion

Data Reformatting Requirements

Array Data Desired:

24 µm

Data Reformatting Option:

Special Instructions:
The entire collection of DCEs corresponding to each exposure time should be packed into one fits file with extensions. Four files should be generated: one with 101 DCEs, one with 77, one with 35, and one with 13, corresponding to the 3, 4, 10, and 30-second exposures IERs.

Task Dependencies

Calibration Dependencies

Output and Deliverable Products

This task serves as a check of our planned use of ONLY 10-second darks during routine calibration, which assumes that either the dark current is extremely small (0-2 DN/sec), or else there is a significant scattered light component that does not vary with exposure time.

Data Analysis

The data will be processed as normally with the DAT: mips_sloper without dark subtraction (-b), mips_caler with no flat fielding (no flag; here, mips_caler is only needed to provide correct input into mips_enhancer), and mips_enhancer (with -f to specify the input *.cal.fits file with extensions) to combine multiple DCEs into dark current calibration images at each exposure time. The IDL script "get_rdnoise.pro", which is contained in the DAT distribution, can be used to measure and compare the counts in these images. This script will output both the dark current (i.e., the signal on the array, in e/s) and the read noise (not important here). Note that the boost frames will appear to have lower counts than the rest. If there is minimal scattered light, typical counts should be ~0-2 DN/sec (0-10 e/s), with lots of zeroes at the longest exposure times. However, the scattered light may well be dominant, in which case the median count rates should be the same regardless of exposure time.

Software Requirements

Actions Following Analysis

If count rates are NOT the same for each exposure time, check the following. Check that counts are at or near levels seen in ground testing (see the 24um read noise log). There is likely to be some scattered light, so counts will probably be higher than in the ground test darks; this needs to be quantified. Check for unexpected image structure such as large-scale gradients or pattern noise. Check for evidence of latency from a previous bright source on the array.

Failure Modes and Responses

If dark count rates taken under nominal conditions are anomalous (e.g., because of latency from a previously exposed bright source), this test should probably be repeated.

Additional Notes