ASTROSAT CZTI

Data Quality Report

Orbit 22759

Creation date: 2024-06-27T18:45:19.731046
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/AS1C05_001T01_9000003366_22759cztM0_level2.evt modeM0/AS1C05_001T01_9000003366_22759cztM0_level2_quad_clean.evt
Size (bytes)505,857,600144,702,720
Size482.4 MB 138.0 MB
Events in quadrant A3,521,742987,966
Events in quadrant B3,672,984991,161
Events in quadrant C3,529,075944,681
Events in quadrant D4,079,213929,768

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155922
B0159102
C0156102
D0173782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7610440.578187%
B7610730.959264%
C7610821.077530%
D76101091.432326%

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 7855 7612 0 0 0.00% 0.00%
B 7855 7612 0 0 0.00% 0.00%
C 7855 7612 0 0 0.00% 0.00%
D 7855 7612 61 61 0.78% 0.80%

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 13 254 14168 72.42 912 892 183.3
A 0 226 8006 38.81 912 892 183.3
A 3 137 7514 36.12 912 892 183.3
B 0 230 42289 243.3 906 884 170.2
B 0 245 30980 176.85 906 884 170.2
B 0 190 29857 170.25 906 884 170.2
C 14 238 135789 670.55 863 864 201.2
C 8 128 10620 48.49 863 864 201.2
C 10 22 7851 34.72 863 864 201.2
D 2 152 211716 991.64 874 845 212.6
D 1 52 206931 969.14 874 845 212.6
D 12 227 93330 434.92 874 845 212.6

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