ASTROSAT CZTI

Data Quality Report

Orbit 16820

Creation date: 2024-06-27T17:28:12.432334
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/AS1A05_140T01_9000002496_16820cztM0_level2.evt modeM0/AS1A05_140T01_9000002496_16820cztM0_level2_quad_clean.evt
Size (bytes)662,711,04071,893,440
Size632.0 MB 68.6 MB
Events in quadrant A5,281,183433,137
Events in quadrant B3,717,348459,721
Events in quadrant C4,363,640431,780
Events in quadrant D6,279,628409,504

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198002
B0148341
C0169671
D0230101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A633970811.168954%
B63391382.177000%
C63394477.051585%
D633983713.203975%

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 7585 6341 407 407 5.37% 6.42%
B 7585 6341 10 10 0.13% 0.16%
C 7585 6341 167 167 2.20% 2.63%
D 7585 6341 558 558 7.36% 8.80%

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 2113525 12838.54 820 806 164.6
A 9 143 16443 95.02 820 806 164.6
A 0 226 7390 40.01 820 806 164.6
B 15 35 119751 755.88 836 820 157.3
B 0 189 86414 544.0 836 820 157.3
B 10 16 48520 303.16 836 820 157.3
C 3 233 939900 5130.75 791 798 183.0
C 0 207 211247 1149.78 791 798 183.0
C 14 238 125225 679.8 791 798 183.0
D 1 52 2962176 15645.39 783 762 189.3
D 15 0 268929 1416.75 783 762 189.3
D 2 33 44042 228.65 783 762 189.3

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