ASTROSAT CZTI

Data Quality Report

Orbit 46345

Creation date: 2024-06-27T23:22:01.429110
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/AS1A13_070T05_9000006198_46345cztM0_level2.fits modeM0/AS1A13_070T05_9000006198_46345cztM0_level2_quad_clean.evt
Size (bytes)566,403,840102,401,280
Size540.2 MB 97.7 MB
Events in quadrant A9,290,503585,548
Events in quadrant B3,739,424739,063
Events in quadrant C3,027,623716,053
Events in quadrant D4,412,913613,809

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321861
B0153921
C0135181
D0174911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6392153223.967459%
B63932333.644611%
C6393540.844674%
D63935107.977475%

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 7492 6393 1083 1083 14.46% 16.94%
B 7493 6394 100 100 1.33% 1.56%
C 7493 6394 20 20 0.27% 0.31%
D 7493 6394 359 359 4.79% 5.61%

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 15 223 3832621 27696.33 666 653 138.4
A 10 83 2842642 20541.05 666 653 138.4
A 13 6 12890 88.45 666 653 138.4
B 5 172 418233 2956.31 725 704 141.2
B 3 112 331852 2344.69 725 704 141.2
B 0 155 46083 321.31 725 704 141.2
C 12 249 74500 435.99 722 725 169.2
C 12 2 67100 392.26 722 725 169.2
C 2 14 34147 197.52 722 725 169.2
D 5 235 1001877 5773.75 695 674 173.4
D 13 249 192406 1105.68 695 674 173.4
D 8 48 129782 744.54 695 674 173.4

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