ASTROSAT CZTI

Data Quality Report

Orbit 20230515_A12_052T04_9000005638_level2

Creation date: 2023-05-18T13:47:48.134301
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/AS1A12_052T04_9000005638cztM0_level2.fits modeM0/AS1A12_052T04_9000005638cztM0_level2_quad_clean.evt
Size (bytes)1,185,428,1601,354,829,760
Size1.1 GB 1.3 GB
Events in quadrant A7,162,6668,522,441
Events in quadrant B6,791,0528,431,840
Events in quadrant C6,901,9587,840,624
Events in quadrant D5,825,4107,027,213

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05080
B05080
C05080
D05080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027500
B027500
C027500
D027500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02930320
B02935090
C03184600
D03968010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1344445500.409092%
B13444421651.610336%
C13444446913.489185%
D134444118178.789533%

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 185295 134437 0 0 0.00% 0.00%
B 185294 133850 0 0 0.00% 0.00%
C 185295 133930 0 0 0.00% 0.00%
D 185295 133431 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 9 19 5996 9.02 1869 1746 471.2
A 7 110 5724 8.44 1869 1746 471.2
A 0 29 5710 8.41 1869 1746 471.2
B 2 9 6006 12.19 1796 1709 352.4
B 3 80 4922 9.12 1796 1709 352.4
B 3 17 4853 8.92 1796 1709 352.4
C 1 81 5599 8.43 1821 1704 462.2
C 3 202 5502 8.22 1821 1704 462.2
C 1 80 5443 8.09 1821 1704 462.2
D 7 3 4336 6.34 1666 1516 445.0
D 10 189 4241 6.12 1666 1516 445.0
D 10 113 4184 6.0 1666 1516 445.0

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