ASTROSAT CZTI

Data Quality Report

Orbit 08516

Creation date: 2024-06-27T15:33:46.250250
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/AS1G07_060T01_9000001200_08516cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08516cztM0_level2_quad_clean.evt
Size (bytes)520,185,60086,855,040
Size496.1 MB 82.8 MB
Events in quadrant A3,850,421525,595
Events in quadrant B4,097,982525,688
Events in quadrant C3,628,208518,582
Events in quadrant D3,634,390505,315

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01705824
B01745615
C01653520
D01671817

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79783584.487340%
B79833774.722535%
C79792302.882567%
D79812423.032201%

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 8123 7985 30 30 0.37% 0.38%
B 8123 7990 47 47 0.58% 0.59%
C 8123 7988 0 0 0.00% 0.00%
D 8123 7989 4 4 0.05% 0.05%

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 5 16 149227 755.45 953 931 196.3
A 15 174 32060 158.58 953 931 196.3
A 0 226 8934 40.77 953 931 196.3
B 10 16 278675 1498.36 953 926 185.4
B 5 255 31301 163.86 953 926 185.4
B 0 214 24368 126.46 953 926 185.4
C 13 61 7021 28.02 929 930 217.3
C 8 222 3262 10.73 929 930 217.3
C 3 202 2364 6.6 929 930 217.3
D 1 52 59689 262.34 921 899 224.1
D 9 64 31968 138.64 921 899 224.1
D 2 234 29487 127.57 921 899 224.1

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