ASTROSAT CZTI

Data Quality Report

Orbit 14642

Creation date: 2024-06-27T16:57:53.067673
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/AS1A04_075T02_9000002158_14642cztM0_level2.evt modeM0/AS1A04_075T02_9000002158_14642cztM0_level2_quad_clean.evt
Size (bytes)739,002,240128,266,560
Size704.8 MB 122.3 MB
Events in quadrant A5,481,050814,756
Events in quadrant B4,709,967820,706
Events in quadrant C7,030,884797,475
Events in quadrant D4,515,254791,893

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223382
B0202162
C0281912
D0202992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9520580.609244%
B9520770.808824%
C9520570.598739%
D9520740.777311%

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 10231 9521 0 0 0.00% 0.00%
B 10231 9522 24 24 0.23% 0.25%
C 10231 9522 2 2 0.02% 0.02%
D 10231 9522 50 50 0.49% 0.53%

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 0 23 443952 1984.97 1097 1073 223.1
A 8 15 211443 942.87 1097 1073 223.1
A 1 162 174693 778.16 1097 1073 223.1
B 10 16 90905 437.73 1092 1064 205.2
B 10 246 76053 365.37 1092 1064 205.2
B 0 219 52662 251.4 1092 1064 205.2
C 3 233 2875211 11886.1 1051 1055 241.8
C 3 234 22249 87.65 1051 1055 241.8
C 8 128 11228 42.07 1051 1055 241.8
D 12 110 154256 595.08 1057 1028 257.5
D 10 199 97447 374.46 1057 1028 257.5
D 10 70 65856 251.77 1057 1028 257.5

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