GLIMPSE3D source designation (same as GLIMPSEI and GLIMPSEII): Archive=> SSTGLMA GLLL.llll+-BB.bbbb Catalog=> SSTGLMC GLLL.llll+-BB.bbbb Designation is SST = Spitzer Space Telescope GLM = GLIMPSEI, GLIMPSEII, and GLIMPSE3D projects A = more complete Archive C = highly reliable Catalog G = Galactic coordinates LLL.llll = Galactic longitude (degrees) of the source +-BB.bbbb = Galactic latitude (degrees) of the source =============================================================================== Close source flag: 0 no sources in the Archive within 3" of the source 1 sources in the Archive between 2.5" and 3" of the source 2 sources in the Archive between 2.0" and 2.5" of the source 3 sources in the Archive between 1.5" and 2.0" of the source 4 sources in the Archive between 1.0" and 1.5" of the source 5 sources in the Archive between 0.5" and 1.0" of the source 6 sources in the Archive within 0.5" of the source ================================================================================ (footnote 1) GLIMPSE3D Source Quality Flag (SQF) bt = bit in sqf value = sum of 2^(bt-1) i.e. bt 1 corresponds to 2^0=1 0 OK - no problems encountered bt Flag Source 1 poor pixels in dark current SSC 2 flat field applied using questionable value SSC 3 latent image SSC,2MASS 4 sat star correction 2MASS 7 muxbleed correction applied GLIMPSE * 8 hot, dead or otherwise unacceptable pixel SSC,GLIMPSE 9 muxbleed > 3-sigma above the background GLIMPSE,2MASS 10 allstar tweak positive GLIMPSE 11 allstar tweak negative GLIMPSE 13 confusion in in-band merge GLIMPSE 14 confusion in cross-band merge (IRAC) GLIMPSE 14 confusion in cross-band merge (2MASS) GLIMPSE 15 column pulldown correction GLIMPSE 16 banding correction GLIMPSE 17 stray light GLIMPSE 19 data predicted to saturate GLIMPSE *20 saturated star wing region GLIMPSE,2MASS 21 pre-lumping in in-band merge GLIMPSE 22 post-lumping in cross-band merge GLIMPSE 23 photometric quality flag 2MASS 24 photometric quality flag 2MASS 25 photometric quality flag 2MASS *30 edge of frame (within 3 pixels of edge) GLIMPSE SQF bit value key: bt 1 => 1; 2 => 2; 3 => 4; 4 => 8; 5 => 16; 6 => 32; 7 => 64; 8 => 128 bt 9 => 256; 10 => 512; 11 => 1024; 12 => 2048; 13 => 4096; 14 => 8192; 15 => 16384; bt 16 => 32768; 17 => 65536; 18 => 131072; 19 => 262144; 20 => 524288; bt 21 => 1048576; 22 => 2097152; 23 => 4194304; 24 => 8388608; 25 => 16777216; 30 => 536870912 * Note that sources with magnitudes with IRAC flags 8, 20, and 30 are used in the culling process to create the Catalog. For 2MASS data, the following contamination and confusion (cc) flags from the 2MASS All-Sky PSC are mapped into bits 3,4,9 and 20 in the Source Quality Flag. see http://www.ipac.caltech.edu/2mass/releases/allsky/doc/sec2_2a.html#cc_flg for more information about these 2MASS flags. Users should consult the 2MASS All-Sky Point Source Catalog for the complete information about the source, including all of their quality flags. 2MASS "cc" Flag => SQF -------------------- ------------------------------ "p" persistence latent (bit 3) "c" photom confusion corr sat star wing (bit 4) "d" diffraction spike uncorrectable sat star (bit 20) "s" electronic stripe muxbleed (bit 9) Three SQF bits provide the 2MASS photometric quality flag, whose possible values are (from worst to best) X, U, F, E, D, C, B, and A. See http://pegasus.phast.umass.edu/ipac_wget/releases/allsky/doc/sec1_6b.html#phqual for the details. 2MASS "ph_qual" Flag => SQF bits 23, 24, 25 value --------------- --------------------- ---------- X 0 0 0 0 U 1 0 0 4194304 F 0 1 0 8388608 E 1 1 0 12582912 D 0 0 1 16777216 C 1 0 1 20971520 B 0 1 1 25165824 A 1 1 1 29360128 X - There is a detection at this location, but no valid brightness estimate can be extracted using any algorithm. U - Upper limit on magnitude. Source is not detected in this band or it is detected, but not resolved in a consistent fashion with other bands. F - This category includes sources where a reliable estimate of the photometric error could not be determined. E - This category includes detections where the goodness-of-fit quality of the profile-fit photometry was very poor, or detections where psf fit photometry did not converge and an aperture magnitude is reported, or detections where the number of frames was too small in relation to the number of frames in which a detection was geometrically possible. D - Detections in any brightness regime where valid measurements were made with no [jhk]_snr or [jhk]_cmsig requirement. C - Detections in any brightness regime where valid measurements were made with [jhk]_snr>5 AND [jhk]_cmsig<0.21714. B - Detections in any brightness regime where valid measurements were made with [jhk]_snr>7 AND [jhk]_cmsig<0.15510. A - Detections in any brightness regime where valid measurements were made with [jhk]_snr>10 AND [jhk]_cmsig<0.10857. ================================================================================ (footnote 2) Flux calculation method flag (mf): The flux calculation method flag indicates by bit whether a given frametime was present, and whether that frametime time was used in the final flux. present used exp bit bit 0.6 1 2 1.2 3 4 2 5 6 12 7 8 30 9 10 100 11 12 value = 2^(present bit - 1) + 2^(used bit - 1) This flag is more useful for HDR mode data which has two frametimes. For the 2 second frametime of the GLIMPSE3D survey, the method flag equals 48 (2^4 + 2^5). ================================================================================