ASTROSAT CZTI

Data Quality Report

Orbit 00731

Creation date: 2024-06-27T14:02:10.669799
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/AS1P01_010T01_9000000108_00731cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00731cztM0_level2_quad_clean.evt
Size (bytes)904,824,00071,317,440
Size862.9 MB 68.0 MB
Events in quadrant A5,791,555464,283
Events in quadrant B6,198,956465,631
Events in quadrant C5,607,456461,217
Events in quadrant D9,468,886412,874

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207870
B0220210
C0202800
D0317680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5072220.433754%
B5073270.532229%
C5073130.256259%
D507357011.235955%

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 5072 5072 72 72 1.42% 1.42%
B 5073 5073 143 143 2.82% 2.82%
C 5073 5073 57 57 1.12% 1.12%
D 5073 5073 1641 1641 32.35% 32.35%

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 15 171 87701 239.92 1481 1494 359.3
A 15 17 12606 30.93 1481 1494 359.3
A 12 189 12154 29.67 1481 1494 359.3
B 14 51 170991 462.51 1547 1553 366.3
B 15 185 41134 108.04 1547 1553 366.3
B 5 191 37063 96.93 1547 1553 366.3
C 9 52 86230 218.59 1390 1434 387.9
C 15 241 31883 78.49 1390 1434 387.9
C 3 111 30257 74.3 1390 1434 387.9
D 12 22 2452112 6153.41 1279 1323 398.3
D 9 52 1367753 3430.82 1279 1323 398.3
D 6 226 650570 1630.12 1279 1323 398.3

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