ASTROSAT CZTI

Data Quality Report

Orbit 09755

Creation date: 2024-06-27T15:50:15.248272
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/AS1A03_080T01_9000001392_09755cztM0_level2.evt modeM0/AS1A03_080T01_9000001392_09755cztM0_level2_quad_clean.evt
Size (bytes)460,494,72072,167,040
Size439.2 MB 68.8 MB
Events in quadrant A3,047,990436,711
Events in quadrant B3,189,500448,697
Events in quadrant C3,069,613446,668
Events in quadrant D4,205,932408,082

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130344
B0133123
C0130683
D0167183

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6368130.204146%
B6368220.345477%
C6368190.298367%
D63682093.282035%

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 7723 6370 0 0 0.00% 0.00%
B 7723 6370 1 1 0.01% 0.02%
C 7723 6370 2 2 0.03% 0.03%
D 7723 6370 155 155 2.01% 2.43%

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 0 226 7326 41.26 791 776 158.7
A 12 194 6464 35.83 791 776 158.7
A 3 137 3456 16.88 791 776 158.7
B 0 214 55900 367.59 803 784 149.9
B 12 111 16297 103.46 803 784 149.9
B 11 111 13409 84.2 803 784 149.9
C 14 234 12958 68.28 783 788 178.2
C 13 61 5729 27.72 783 788 178.2
C 14 67 2965 12.21 783 788 178.2
D 1 52 1057327 5672.44 760 741 186.3
D 13 137 215619 1153.6 760 741 186.3
D 2 234 20659 106.93 760 741 186.3

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