ASTROSAT CZTI

Data Quality Report

Orbit 16259

Creation date: 2024-06-27T17:20:05.068372
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/AS1T02_112T01_9000002390_16259cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16259cztM0_level2_quad_clean.evt
Size (bytes)513,443,52099,336,960
Size489.7 MB 94.7 MB
Events in quadrant A3,860,930629,813
Events in quadrant B3,882,755639,117
Events in quadrant C3,479,942633,215
Events in quadrant D3,849,147616,790

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161762
B0160301
C0148471
D0161581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70341942.758032%
B70341331.890816%
C7034991.407450%
D70341191.691783%

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 7195 7038 93 93 1.29% 1.32%
B 7195 7038 18 18 0.25% 0.26%
C 7195 7038 1 1 0.01% 0.01%
D 7195 7038 32 32 0.44% 0.45%

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 417975 2406.19 857 841 173.4
A 14 250 55244 313.82 857 841 173.4
A 9 143 55018 312.51 857 841 173.4
B 7 220 239024 1440.42 861 842 165.4
B 4 216 41107 243.51 861 842 165.4
B 0 198 36223 213.97 861 842 165.4
C 14 238 129506 666.0 825 829 193.2
C 3 233 76851 393.47 825 829 193.2
C 0 207 32814 165.55 825 829 193.2
D 1 52 518323 2524.22 836 810 205.0
D 10 70 48696 233.57 836 810 205.0
D 12 233 46227 221.52 836 810 205.0

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