Downlink Segment Test Status (S16.0)

1. Downlink Segment Test Status (S16.0) Russ Laher January 17, 2007

2. Summary of S16.0 D/L Work Performed • D/L-group software changes implemented for S16.0 (all critical level 3 or 4) • 33 pipeline-related CRs/AIs (Cf. 56 for S15.0) • No database-related CRs/AIs (Cf. 3 for S15.0) • 8 ARs (Cf. 24 for S15.0) • D/L segment-testing to check specific downlink software changes • Moderately-sized cluster of pipeline-drones (mini “ops-like” environment) • Solaris-10 operating system • Used the same database that was used in S15 testing (there are no database changes that affect downlink software) • Product archiver run on pipeline results for end-to-end verification • ISTs doing science verification of pipeline products • QA team verification of QA sub-system upgrades • Test plan documents written by the Cog. E.s to help I&T

3. What’s New for S16.0 – IRAC • Created the new “artiflags” module to flag column pulldown and banding, which has been added for execution in the post-BCD plScriptId=25 pipeline (CR #7427) • Fixed a bug in the “muxbleedcorr” module (CR #7426) • Modified the “fowlinearize” module to correctly flag saturated pixels (CR #7425) • Fix the sky-dark-selection problem with HDR AORs (CR #7328)

4. What’s New for S16.0 – IRS • Modified the “profile” module • To write zeroes instead of NaNs in the output table (CR #7523) • To increase maximum cuts to 2000 (increases positional accuracy, which is needed for the SPICE GUI’s “optimum” module) (CR #7452) • Modified the “ridge” module to handle profiles with 2000 values (CR #7452) • Modified the “extract” module • To remove extra line in the output overlay file (AR #7522) • To add option to generate only an overlay file and no extraction file (CR #7484) • To not use values from replaced NaNs to compute values for replacement values for other NaNs (CR #7456) • Modified the “radhit” module to optionally skip the bottom N samples in a ramp during the detection of outliers (radiation hits) (CR #7346)

5. What’s New for S16.0 – MIPS:Si • Changes related to the “stacklayer” module (part of the new AOR-flat functionality to be activated later, in S17.0) : • Fixed bug introduced into recent changes (AR #7552) • Added new –c option to copy the first index keyword (CR #7460) • Modified to handle an indefinite number of layers (CR #7444) • Modified to use first layer of NxNx2 file (CR #7443) • Added new fftw library to “common” CVS repository (CR #7519) • Created new “mediank” module to compute FITS-cube median (CR #7450)

6. What’s New for S16.0 – MIPS:Ge • Changes to the “mipsdark” module: • For portability, modified the “mipsdark” module to use the platform-independent iznand() function instead of the platform-dependent isnan() function (CR #7441) • Included <string.h> for compiling on Mac under gcc 4.0 (CR #7445) • Added a C++ declaration to sortutil.h, in order to make the “sortutil” C-library callable from C++ (CR #7409) • Made changes to “cvtir4g” in parallel with those done previously for the “cvti2r4” module (CR #7494)

7. What’s New for S16.0 – Generic • Modified the “tranhead” module • To compute and write Spitzer spacecraft component positions and velocities in the heliocentric ICRS reference system to output FITS header (CR #7404) • To compute and write the heliocentric modified Julian date to the output FITS header (CR #7363) • Requires Spitzer S/C and planetary ephemeris data (sirtf.bsp and de.bsp in $CSPICE_LIBRARY_KERNELS) SPTZR_X = 6084048.364647 / Heliocentric J2000 x position (km) SPTZR_Y = -138993559.088106 / Heliocentric J2000 y position (km) SPTZR_Z = -62551818.282086 / Heliocentric J2000 z position (km) SPTZR_VX= 29.396946 / Heliocentric J2000 x velocity (km/s) SPTZR_VY= 0.639668 / Heliocentric J2000 y velocity (km/s) SPTZR_VZ= 0.729644 / Heliocentric J2000 z velocity (km/s) SPTZR_LT= 508.824176 / One-way light time to Sun's center (s) SCLK_OBS= 837186592.637 / SCLK (~sec. since 1/1/1980) at ramp start. ET_OBS = 205991150.144 / Ephemeris time (seconds past J2000 epoch) DATE_OBS= '2006-07-12T15:44:44.960' / UTC date & time at ramp start. MJD_OBS = 53928.6560759 / Mod. Julian Date (UTC) (days) at ramp start. HMJD_OBS= 53928.6558680 / Corresponding Heliocen. Mod. Julian Date UTCS_OBS= 205991084.960 / UTC seconds past year 2000 at ramp start.

8. What’s New for S16.0 – Generic (cont.) • Modified the “tranhead” module (continued from previous page) • To no longer automatically average “D” keywords when “E” keywords are blank or missing (CR #7332), which requires corresponding changes to tranhead’s input keyword-include lists for all instruments (AIs #2205, #2213, #2212, and #2214) • Upgraded JPL “CSPICE” library to version 60 from version 52a (CR #7436) • Refinement to the “cvti2r4” module to handle MIPS-70 DCEs with less than four data planes (as found in IOC data) (CR #7480)

9. What’s New for S16.0 – MOPEX • For portability, modified the “medfilter” and “detect” modules to use the platform-independent iznand() function instead of the Solaris isnan() function (AR #7517) • Modified the “sourcestimate” and “sourcestimate_1frame” modules to include a correction factor for the error covariance matrix, which solves a rare data-dependent problem that manifests itself in a downstream bandmerge error (AR #7507) • Made extensive changes to the “sed_fif” module, in order to fix the MOPEX SED pipeline for cases with PA_SLT near zero (AR #7349) • Modified the perl script “mosaic.pl” to fix the problem of MOPEX ignoring the specified list of input Rmask files located elsewhere than the default location (AR #7342) • Modified the perl scripts “mopex.pl”, “mopex_1frame.pl”, and “w_bqd_run_mopex.pl”, in order to propagate special exit code=10 for cases where APEX is unable to find any point sources (AR #7225) • Modified the perl script “PSEutils.pl to not unset run_detect whenever run_detect_medfilter is unset (AR #7467)

10. What’s New for S16.0 – Bandmerge • Created new post-BCD modules to support completeness & reliability (C&R) analysis of bandmerge output: • “randposn” module (CR #7462) • “detfilt” module (CR #7463) • “combdets” module (CR #7464) • “comprel” module (CR #7465) • These new modules are documented in the post-bandmerge-tools users guide, which is now available on the Spitzer public website. • These new modules were recently used to analyze the SWIRE data set, and will eventually become available in the bandmerge GUI package.

11. Issue • S16.0 D/L software will be built with the optimization level increased from -xO3 to -xO5, in order to address the reported slower performance of S15.0 pipelines (CR #7557)