ASTROSAT CZTI

Data Quality Report

Orbit 23404

Creation date: 2024-06-27T18:53:55.067926
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_127T02_9000003460_23404cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23404cztM0_level2_quad_clean.evt
Size (bytes)506,715,840103,426,560
Size483.2 MB 98.6 MB
Events in quadrant A3,755,414692,858
Events in quadrant B3,589,645707,317
Events in quadrant C3,409,220653,887
Events in quadrant D4,165,964640,300

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01533014
B01472611
C01410014
D01658915

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62751081.721116%
B62761201.912046%
C62741362.167676%
D62741432.279248%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7559 6279 2 2 0.03% 0.03%
B 7559 6279 3 3 0.04% 0.05%
C 7559 6279 0 0 0.00% 0.00%
D 7559 6279 54 54 0.71% 0.86%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 6 16 304665 1710.92 896 880 177.6
A 13 254 10513 54.25 896 880 177.6
A 0 226 7848 39.24 896 880 177.6
B 0 189 63315 376.46 887 869 165.9
B 0 190 44789 264.78 887 869 165.9
B 12 111 19123 110.05 887 869 165.9
C 14 238 137970 715.23 831 839 191.7
C 10 9 17078 84.7 831 839 191.7
C 2 16 7187 33.11 831 839 191.7
D 1 52 760864 3655.55 853 831 207.9
D 7 238 174890 837.18 853 831 207.9
D 2 234 23932 111.11 853 831 207.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter