ASTROSAT CZTI

Data Quality Report

Orbit 45653

Creation date: 2024-06-27T23:14:37.380306
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/AS1A13_071T07_9000006116_45653cztM0_level2.fits modeM0/AS1A13_071T07_9000006116_45653cztM0_level2_quad_clean.evt
Size (bytes)619,372,800129,525,120
Size590.7 MB 123.5 MB
Events in quadrant A6,940,198875,417
Events in quadrant B4,763,648877,370
Events in quadrant C4,126,067851,698
Events in quadrant D6,469,021753,573

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262180
B0197180
C0182940
D0248320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81061702.097212%
B81073203.947206%
C81071471.813248%
D81074705.797459%

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 8106 8106 5 5 0.06% 0.06%
B 8107 8107 178 178 2.20% 2.20%
C 8107 8107 115 115 1.42% 1.42%
D 8107 8107 386 386 4.76% 4.76%

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 10 83 3348640 17837.23 903 882 187.7
A 0 243 24205 124.27 903 882 187.7
A 13 210 19316 98.22 903 882 187.7
B 5 172 368984 2125.82 890 863 173.2
B 3 112 279980 1611.84 890 863 173.2
B 0 183 116277 666.49 890 863 173.2
C 14 254 553320 2712.01 872 874 203.7
C 2 14 93400 454.22 872 874 203.7
C 3 233 21276 100.16 872 874 203.7
D 1 52 1026373 4709.84 861 830 217.7
D 11 241 735687 3374.85 861 830 217.7
D 13 249 707521 3245.5 861 830 217.7

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