ASTROSAT CZTI

Data Quality Report

Orbit 26949

Creation date: 2024-06-27T19:34:49.655840
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/AS1A09_134T01_9000003896_26949cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26949cztM0_level2_quad_clean.evt
Size (bytes)972,351,36082,843,200
Size927.3 MB 79.0 MB
Events in quadrant A5,850,105567,003
Events in quadrant B10,908,061467,708
Events in quadrant C3,265,695588,675
Events in quadrant D9,000,278443,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213770
B0366750
C0135890
D0310940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6297102416.261712%
B6297309849.198031%
C6298931.476659%
D6298216534.375992%

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 7407 6298 813 813 10.98% 12.91%
B 7407 6297 2569 2569 34.68% 40.80%
C 7408 6298 25 25 0.34% 0.40%
D 7408 6298 2052 2052 27.70% 32.58%

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 3015067 20599.28 722 708 146.3
A 8 192 25377 168.58 722 708 146.3
A 5 168 13266 85.82 722 708 146.3
B 0 189 8005150 63979.61 667 651 125.1
B 3 112 128369 1020.84 667 651 125.1
B 10 245 102108 810.94 667 651 125.1
C 2 16 124860 715.28 745 749 173.5
C 14 238 118903 680.95 745 749 173.5
C 15 208 87892 502.22 745 749 173.5
D 12 1 2554050 18033.55 593 578 141.6
D 7 80 2070388 14617.75 593 578 141.6
D 1 52 1124408 7936.9 593 578 141.6

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