ASTROSAT CZTI

Data Quality Report

Orbit 12790

Creation date: 2024-06-27T16:32:15.995210
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/AS1A04_110T04_9000001886_12790cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12790cztM0_level2_quad_clean.evt
Size (bytes)457,519,680109,442,880
Size436.3 MB 104.4 MB
Events in quadrant A3,098,471734,676
Events in quadrant B3,669,040737,007
Events in quadrant C2,625,816734,511
Events in quadrant D4,051,883686,053

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131792
B0148301
C0122051
D0161931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60471322.182901%
B60472994.944601%
C6047230.380354%
D60473365.556474%

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 7033 6049 84 84 1.19% 1.39%
B 7033 6049 155 155 2.20% 2.56%
C 7033 6049 1 1 0.01% 0.02%
D 7033 6049 264 264 3.75% 4.36%

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 15 174 245557 1731.52 693 677 141.4
A 12 189 149389 1051.53 693 677 141.4
A 8 15 34972 242.5 693 677 141.4
B 4 239 892008 6867.81 685 667 129.8
B 3 209 31462 237.28 685 667 129.8
B 0 219 22664 169.49 685 667 129.8
C 13 61 5037 28.17 672 675 154.9
C 14 234 5002 27.94 672 675 154.9
C 8 222 2446 11.44 672 675 154.9
D 1 52 822945 5171.85 659 640 159.0
D 8 195 633064 3977.6 659 640 159.0
D 7 80 56354 350.41 659 640 159.0

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