ASTROSAT CZTI

Data Quality Report

Orbit 07748

Creation date: 2024-06-27T15:23:29.527268
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/AS1G06_064T01_9000001066_07748cztM0_level2.evt modeM0/AS1G06_064T01_9000001066_07748cztM0_level2_quad_clean.evt
Size (bytes)518,264,64085,858,560
Size494.3 MB 81.9 MB
Events in quadrant A3,745,269520,972
Events in quadrant B4,103,928526,738
Events in quadrant C3,582,102516,795
Events in quadrant D3,735,572494,130

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165442
B0173551
C0161851
D0164811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77792282.930968%
B77792913.740841%
C77791411.812572%
D77791411.812572%

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 7894 7779 9 9 0.11% 0.12%
B 7894 7779 52 52 0.66% 0.67%
C 7894 7780 0 0 0.00% 0.00%
D 7894 7780 8 8 0.10% 0.10%

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 0 23 109585 559.01 936 913 194.4
A 0 128 18947 92.77 936 913 194.4
A 0 226 16356 79.44 936 913 194.4
B 4 239 362200 1976.35 937 913 182.8
B 0 214 34514 183.81 937 913 182.8
B 15 204 21042 110.11 937 913 182.8
C 12 4 8607 36.0 914 919 213.6
C 13 61 7243 29.61 914 919 213.6
C 8 128 4559 17.04 914 919 213.6
D 8 195 97491 425.57 917 888 227.0
D 2 14 38073 163.81 917 888 227.0
D 13 104 36841 158.39 917 888 227.0

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