ASTROSAT CZTI

Data Quality Report

Orbit 28753

Creation date: 2024-06-27T19:55:50.659698
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/AS1A10_123T08_9000004126_28753cztM0_level2.evt modeM0/AS1A10_123T08_9000004126_28753cztM0_level2_quad_clean.evt
Size (bytes)701,507,52079,223,040
Size669.0 MB 75.6 MB
Events in quadrant A3,557,653487,631
Events in quadrant B3,845,362492,746
Events in quadrant C7,392,652458,961
Events in quadrant D5,962,254457,327

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151941
B0159951
C0270381
D0228041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7211640.887533%
B72121852.565169%
C721296213.338880%
D72123915.421520%

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 7556 7212 4 4 0.05% 0.06%
B 7557 7212 96 96 1.27% 1.33%
C 7557 7212 280 280 3.71% 3.88%
D 7556 7211 308 308 4.08% 4.27%

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 15 174 103052 574.53 867 847 177.9
A 12 16 57606 319.06 867 847 177.9
A 14 239 29806 162.79 867 847 177.9
B 4 80 458917 2836.14 851 830 161.5
B 12 111 20116 119.41 851 830 161.5
B 11 111 18292 108.11 851 830 161.5
C 3 233 4007416 21252.28 807 810 188.5
C 14 238 154782 816.72 807 810 188.5
C 14 254 39093 203.06 807 810 188.5
D 8 195 1330562 6777.07 825 801 196.2
D 1 52 1307628 6660.19 825 801 196.2
D 2 250 71492 360.27 825 801 196.2

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