ASTROSAT CZTI

Data Quality Report

Orbit 21995

Creation date: 2024-06-27T18:35:02.871362
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_094T01_9000003248_21995cztM0_level2.evt modeM0/AS1A07_094T01_9000003248_21995cztM0_level2_quad_clean.evt
Size (bytes)1,455,791,040223,476,480
Size1.4 GB 213.1 MB
Events in quadrant A8,902,5611,403,660
Events in quadrant B9,979,3961,399,706
Events in quadrant C8,949,7551,358,899
Events in quadrant D14,979,0691,301,574

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0386994
B0415354
C0387274
D0573957

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189171340.708358%
B189183822.019241%
C189182151.136484%
D1891710595.598139%

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 20967 18919 0 0 0.00% 0.00%
B 20968 18919 148 148 0.71% 0.78%
C 20968 18918 0 0 0.00% 0.00%
D 20966 18918 1025 1025 4.89% 5.42%

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 33191 66.44 2301 2249 465.7
A 15 236 32226 64.36 2301 2249 465.7
A 3 137 19985 38.08 2301 2249 465.7
B 3 64 673418 1529.25 2281 2219 438.9
B 0 230 145862 327.27 2281 2219 438.9
B 0 190 97173 216.34 2281 2219 438.9
C 14 238 346005 665.67 2200 2215 516.5
C 0 239 17715 30.01 2200 2215 516.5
C 13 61 15482 25.69 2200 2215 516.5
D 7 238 4746370 8855.31 2200 2133 535.8
D 1 52 1271465 2369.26 2200 2133 535.8
D 5 222 175656 323.89 2200 2133 535.8

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