ASTROSAT CZTI

Data Quality Report

Orbit 21789

Creation date: 2024-06-27T18:32:14.194195
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_006T01_9000003226_21789cztM0_level2.evt modeM0/AS1A07_006T01_9000003226_21789cztM0_level2_quad_clean.evt
Size (bytes)757,889,28081,630,720
Size722.8 MB 77.8 MB
Events in quadrant A3,734,781516,193
Events in quadrant B3,693,982527,519
Events in quadrant C3,511,526513,592
Events in quadrant D11,514,961402,537

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156651
B0154771
C0151051
D0392061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73452112.872703%
B73462343.185407%
C73462613.552954%
D7346331345.099374%

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 7515 7346 3 3 0.04% 0.04%
B 7516 7348 5 5 0.07% 0.07%
C 7516 7348 0 0 0.00% 0.00%
D 7516 7346 2786 2786 37.07% 37.93%

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 14 235 182994 1000.08 900 880 182.1
A 13 252 58722 317.64 900 880 182.1
A 5 16 14256 73.45 900 880 182.1
B 3 64 47051 264.54 901 874 174.6
B 0 190 46055 258.83 901 874 174.6
B 0 219 34595 193.18 901 874 174.6
C 14 238 134025 650.32 866 869 204.8
C 13 61 6061 25.36 866 869 204.8
C 15 78 2067 5.85 866 869 204.8
D 7 238 7883495 41594.95 775 751 189.5
D 1 52 491884 2591.57 775 751 189.5
D 13 153 97632 511.21 775 751 189.5

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