ASTROSAT CZTI

Data Quality Report

Orbit 22974

Creation date: 2024-06-27T18:48:12.929906
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/AS1A07_062T01_9000003392_22974cztM0_level2.evt modeM0/AS1A07_062T01_9000003392_22974cztM0_level2_quad_clean.evt
Size (bytes)469,448,64079,557,120
Size447.7 MB 75.9 MB
Events in quadrant A3,305,695495,756
Events in quadrant B3,333,000498,610
Events in quadrant C3,591,658470,759
Events in quadrant D3,519,943465,136

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140942
B0141492
C0148172
D0150422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6876871.265271%
B68761011.468877%
C68762052.981385%
D68751392.021818%

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 7626 6877 0 0 0.00% 0.00%
B 7626 6877 0 0 0.00% 0.00%
C 7626 6877 17 17 0.22% 0.25%
D 7625 6876 66 66 0.87% 0.96%

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 13 170 44419 257.15 845 826 169.5
A 13 254 11256 61.52 845 826 169.5
A 0 226 7368 38.59 845 826 169.5
B 12 111 19662 117.32 842 820 160.6
B 11 111 17383 103.13 842 820 160.6
B 14 111 15053 88.62 842 820 160.6
C 0 10 284632 1507.05 805 808 188.3
C 14 238 127889 674.77 805 808 188.3
C 0 239 20026 102.04 805 808 188.3
D 7 38 175543 886.26 818 794 197.2
D 1 52 83226 418.06 818 794 197.2
D 13 153 63790 319.49 818 794 197.2

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