ASTROSAT CZTI

Data Quality Report

Orbit 11368

Creation date: 2024-06-27T16:11:55.796235
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/AS1G08_062T01_9000001660_11368cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11368cztM0_level2_quad_clean.evt
Size (bytes)549,403,20079,519,680
Size524.0 MB 75.8 MB
Events in quadrant A3,503,045480,228
Events in quadrant B4,803,339465,915
Events in quadrant C3,343,402481,373
Events in quadrant D4,477,615456,144

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155001
B0192360
C0152790
D0184800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7536420.557325%
B75363374.471868%
C7536230.305202%
D75362523.343949%

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 7936 7537 0 0 0.00% 0.00%
B 7936 7537 177 177 2.23% 2.35%
C 7936 7537 0 0 0.00% 0.00%
D 7936 7537 179 179 2.26% 2.37%

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 15 174 63585 350.47 871 852 179.0
A 1 162 28592 154.97 871 852 179.0
A 1 178 15968 84.45 871 852 179.0
B 4 239 655932 3953.85 860 839 165.7
B 7 220 285369 1717.3 860 839 165.7
B 3 64 238610 1435.08 860 839 165.7
C 13 61 6200 26.65 855 860 200.4
C 8 222 5194 21.63 855 860 200.4
C 14 234 4711 19.22 855 860 200.4
D 2 14 326542 1652.46 829 810 197.1
D 13 152 262584 1328.0 829 810 197.1
D 10 253 179290 905.44 829 810 197.1

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