ASTROSAT CZTI

Data Quality Report

Orbit 27311

Creation date: 2024-06-27T19:38:44.645663
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/AS1T03_255T01_9000003922_27311cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27311cztM0_level2_quad_clean.evt
Size (bytes)517,590,72085,121,280
Size493.6 MB 81.2 MB
Events in quadrant A3,393,698550,149
Events in quadrant B3,501,349552,360
Events in quadrant C3,476,356521,606
Events in quadrant D4,863,722500,980

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141450
B0144800
C0144590
D0185800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6485771.187355%
B64861001.541782%
C64861662.559359%
D64863996.151711%

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 7580 6485 0 0 0.00% 0.00%
B 7581 6486 11 11 0.15% 0.17%
C 7581 6486 8 8 0.11% 0.12%
D 7581 6486 329 329 4.34% 5.07%

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 13 248 15743 85.49 874 857 174.1
A 13 254 11488 61.05 874 857 174.1
A 12 189 10686 56.45 874 857 174.1
B 10 245 55574 332.21 860 840 164.8
B 10 247 36513 216.52 860 840 164.8
B 0 229 21929 128.0 860 840 164.8
C 2 16 152334 794.22 818 824 190.8
C 14 238 134029 698.27 818 824 190.8
C 13 61 5732 25.73 818 824 190.8
D 1 52 1590768 8168.67 814 796 194.6
D 2 250 114567 584.51 814 796 194.6
D 12 233 47434 239.61 814 796 194.6

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