ASTROSAT CZTI

Data Quality Report

Orbit 25953

Creation date: 2024-06-27T19:23:12.663820
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_068T01_9000003760_25953cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25953cztM0_level2_quad_clean.evt
Size (bytes)546,840,000119,456,640
Size521.5 MB 113.9 MB
Events in quadrant A3,514,675845,558
Events in quadrant B3,424,419834,806
Events in quadrant C3,400,824781,790
Events in quadrant D5,793,278715,376

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146000
B0142220
C0142130
D0215060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63071211.918503%
B63081161.838935%
C63071522.410021%
D6307102616.267639%

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 7587 6308 1 1 0.01% 0.02%
B 7588 6309 2 2 0.03% 0.03%
C 7587 6308 0 0 0.00% 0.00%
D 7587 6308 753 753 9.92% 11.94%

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 12 16 57074 317.36 891 874 177.1
A 12 194 15142 80.57 891 874 177.1
A 3 1 10985 57.1 891 874 177.1
B 0 190 58915 358.93 858 837 161.8
B 12 111 18433 108.75 858 837 161.8
B 11 111 16875 99.12 858 837 161.8
C 14 238 134901 710.94 822 829 188.6
C 3 233 53040 276.86 822 829 188.6
C 13 61 5386 24.16 822 829 188.6
D 1 52 2171567 11567.65 787 768 187.7
D 1 3 509310 2709.89 787 768 187.7
D 7 80 89493 472.79 787 768 187.7

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