ASTROSAT CZTI

Data Quality Report

Orbit 30980

Creation date: 2024-06-27T20:21:53.203772
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/AS1A10_071T42_9000004476_30980cztM0_level2.evt modeM0/AS1A10_071T42_9000004476_30980cztM0_level2_quad_clean.evt
Size (bytes)587,393,28076,129,920
Size560.2 MB 72.6 MB
Events in quadrant A3,550,504462,207
Events in quadrant B5,684,710460,285
Events in quadrant C4,141,963442,613
Events in quadrant D3,921,071435,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150491
B0221401
C0166881
D0162061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72461642.263318%
B72462573.546784%
C72452773.823326%
D72451482.042788%

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 7661 7246 0 0 0.00% 0.00%
B 7661 7246 7 7 0.09% 0.10%
C 7660 7245 36 36 0.47% 0.50%
D 7660 7245 27 27 0.35% 0.37%

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 13 254 12854 63.96 919 897 186.9
A 3 137 9397 45.47 919 897 186.9
A 0 226 7744 36.63 919 897 186.9
B 6 159 1991466 11211.56 907 883 177.5
B 0 190 38603 212.45 907 883 177.5
B 4 52 25284 137.43 907 883 177.5
C 0 10 551145 2647.64 873 877 207.8
C 14 238 139006 664.61 873 877 207.8
C 2 114 16805 76.64 873 877 207.8
D 8 195 411518 1919.22 882 857 214.0
D 2 250 95012 440.03 882 857 214.0
D 7 238 30464 138.37 882 857 214.0

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