ASTROSAT CZTI

Data Quality Report

Orbit 20240509_A13_092T03_9000006234_level2

Creation date: 2024-05-11T08:36:51.263203
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_092T03_9000006234cztM0_level2.fits modeM0/AS1A13_092T03_9000006234cztM0_level2_quad_clean.evt
Size (bytes)534,314,880546,367,680
Size509.6 MB 521.1 MB
Events in quadrant A3,120,2743,213,250
Events in quadrant B3,065,6663,285,141
Events in quadrant C3,213,7343,182,015
Events in quadrant D2,611,6422,700,275

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0930
C0930
D0930

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02127070
B01358160
C01289180
D01966100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012380
B012380
C012380
D012360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6068822863.766807%
B6073318833.100456%
C607487051.160532%
D6072058459.626153%

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 70178 60787 0 0 0.00% 0.00%
B 70177 60799 0 0 0.00% 0.00%
C 70178 60813 0 0 0.00% 0.00%
D 70178 60762 0 0 0.00% 0.00%

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 7 110 2585 8.74 814 761 208.7
A 0 29 2557 8.6 814 761 208.7
A 0 30 2406 7.88 814 761 208.7
B 2 9 2972 13.84 813 774 158.7
B 2 8 2400 10.24 813 774 158.7
B 3 17 2390 10.18 813 774 158.7
C 3 202 2386 7.15 849 785 223.7
C 1 81 2350 6.99 849 785 223.7
C 1 80 2326 6.89 849 785 223.7
D 15 47 1905 5.95 751 679 206.0
D 7 3 1896 5.9 751 679 206.0
D 12 6 1895 5.9 751 679 206.0

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