Definition of Quality Flags for GLIMPSE

Option: x0 (0=show all flags, x=hexadecimal)

0x00000001 Poor pixels in dark current (SSC pmask)1
0x00000002 Flat field questionable (SSC dmask)2
0x00000004 Latent image (SSC dmask), or persistence (2MASS)4
0x00000008 photometric confusion (2MASS)8
0x00000010  
0x00000020  
0x00000040 muxbleed correction applied (GLIMPSE)64
0x00000080 hot, dead or otherwise unacceptable pixel (SSC pmask, dmask, GLIMPSE)128
0x00000100 muxbleed correction applied is >3σ above background (GLIMPSE), or electronic stripe(s) (2MASS)256
0x00000200 DAOPHOT tweak positive (GLIMPSE)512
0x00000400 DAOPHOT tweak negative (GLIMPSE)1024
0x00000800  
0x00001000 confusion in in-band merge (GLIMPSE)4096
0x00002000 confusion in cross-band merge (both GLIMPSE and 2MASS)8192
0x00004000 column pulldown corrected (GLIMPSE)16384
0x00008000 banding corrected (GLIMPSE)32768
0x00010000 stray light (GLIMPSE)65536
0x00020000  
0x00040000 data predicted to saturate (GLIMPSE)262144
0x00080000 saturated star wing region (GLIMPSE), or diffraction spike (2MASS)524288
0x00100000 pre-lumping in in-band merge (GLIMPSE)1048576
0x00200000 post-lumping in in-band merge (GLIMPSE)2097152
0x00400000 compute_q2M()
0x00800000 compute_q2M()
0x01000000 compute_q2M()
0x02000000  
0x04000000  
0x08000000  
0x10000000  
0x20000000 within three pixels of edge of frame (GLIMPSE)536870912
0x40000000  
0x80000000 flux estimated for Archive entry only (Catalog entry has no flux)(CDS)2147483648 

function compute_q2M(value) {
  var q2M = (value>>22)&7;
  return "2MASS Quality flag = <b>" + "ABCDEFG ".substr(7-q2M, 1) + "</b></td><td>&nbsp;";
}