ASTROSAT CZTI

Data Quality Report

Orbit 18082

Creation date: 2024-06-27T17:44:50.152107
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/AS1A06_006T01_9000002684_18082cztM0_level2.evt modeM0/AS1A06_006T01_9000002684_18082cztM0_level2_quad_clean.evt
Size (bytes)527,855,040100,647,360
Size503.4 MB 96.0 MB
Events in quadrant A4,074,276652,068
Events in quadrant B3,650,470650,865
Events in quadrant C3,371,592628,731
Events in quadrant D4,400,171613,997

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170232
B0155592
C0147922
D0179202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72091081.498127%
B72091021.414898%
C7209731.012623%
D72092323.218199%

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 7639 7210 69 69 0.90% 0.96%
B 7639 7210 31 31 0.41% 0.43%
C 7639 7210 0 0 0.00% 0.00%
D 7639 7209 168 168 2.20% 2.33%

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 707206 4013.21 868 849 176.0
A 14 4 23416 128.22 868 849 176.0
A 0 226 7792 39.45 868 849 176.0
B 3 64 145214 864.07 866 845 167.1
B 7 220 38716 226.66 866 845 167.1
B 0 197 25259 146.12 866 845 167.1
C 14 238 128565 661.47 824 828 193.1
C 3 233 26128 131.01 824 828 193.1
C 13 61 5915 26.34 824 828 193.1
D 11 176 466188 2261.31 828 802 205.8
D 5 222 410703 1991.71 828 802 205.8
D 7 38 238272 1153.87 828 802 205.8

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