ASTROSAT CZTI

Data Quality Report

Orbit 43671

Creation date: 2024-06-27T22:54:20.172024
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/AS1A12_018T01_9000005896_43671cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43671cztM0_level2_quad_clean.evt
Size (bytes)2,757,536,640213,143,040
Size2.6 GB 203.3 MB
Events in quadrant A22,002,6761,850,006
Events in quadrant B9,579,8501,930,029
Events in quadrant C42,930,058370,234
Events in quadrant D26,183,5591,063,436

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780633
B0408213
C01397613
D0902454

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179609095.061247%
B179612791.553366%
C179611505583.820500%
D17960703139.148107%

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 19710 17963 198 198 1.00% 1.10%
B 19711 17964 75 75 0.38% 0.42%
C 19711 17964 14109 14109 71.58% 78.54%
D 19710 17963 4984 4984 25.29% 27.75%

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 15 222 11267323 28164.41 1952 1911 400.0
A 10 83 2297815 5739.94 1952 1911 400.0
A 15 223 333134 828.08 1952 1911 400.0
B 4 206 604525 1573.49 1977 1915 383.0
B 5 235 368010 955.92 1977 1915 383.0
B 0 230 200366 518.18 1977 1915 383.0
C 15 142 33695176 145516.84 986 990 231.5
C 15 157 2689055 11609.09 986 990 231.5
C 15 158 1600064 6906.0 986 990 231.5
D 14 225 6676727 16171.77 1582 1529 412.8
D 7 80 3014458 7299.32 1582 1529 412.8
D 12 6 1858694 4499.29 1582 1529 412.8

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