ASTROSAT CZTI

Data Quality Report

Orbit 00741

Creation date: 2024-06-27T14:02:19.738077
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/AS1P01_010T01_9000000108_00741cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00741cztM0_level2_quad_clean.evt
Size (bytes)474,410,88035,729,280
Size452.4 MB 34.1 MB
Events in quadrant A3,220,173220,557
Events in quadrant B3,620,811222,405
Events in quadrant C3,294,632220,625
Events in quadrant D4,035,638208,831

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116360
B0128520
C0118520
D0140850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A293100.000000%
B2932722.455662%
C293200.000000%
D2932772.626194%

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 2931 2931 10 10 0.34% 0.34%
B 2932 2932 147 147 5.01% 5.01%
C 2932 2932 14 14 0.48% 0.48%
D 2932 2932 390 390 13.30% 13.30%

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 11 79 3112 11.19 838 844 202.8
A 3 111 2551 8.42 838 844 202.8
A 12 189 2259 6.98 838 844 202.8
B 8 38 267784 1298.87 863 867 205.5
B 7 221 51247 245.16 863 867 205.5
B 5 191 12017 54.26 863 867 205.5
C 15 241 18974 78.48 829 855 230.9
C 3 111 12658 51.12 829 855 230.9
C 9 52 11744 47.17 829 855 230.9
D 6 226 681910 2729.94 803 830 249.5
D 13 25 157916 629.64 803 830 249.5
D 1 4 81257 322.37 803 830 249.5

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