ASTROSAT CZTI

Data Quality Report

Orbit 47746

Creation date: 2024-07-27T08:19:51.381925
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/AS1C09_004T04_9000006346_47746cztM0_level2.fits modeM0/AS1C09_004T04_9000006346_47746cztM0_level2_quad_clean.evt
Size (bytes)587,747,520104,777,280
Size560.5 MB 99.9 MB
Events in quadrant A7,127,677716,951
Events in quadrant B4,014,527728,562
Events in quadrant C4,027,023696,215
Events in quadrant D6,051,110548,697

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256522
B0168322
C0171462
D0230952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69162333.368999%
B69162153.108733%
C69163154.554656%
D6916119517.278774%

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 7887 6918 70 70 0.89% 1.01%
B 7887 6918 99 99 1.26% 1.43%
C 7887 6918 209 209 2.65% 3.02%
D 7887 6918 1041 1041 13.20% 15.05%

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 10 83 4057682 26481.43 738 722 153.2
A 13 6 106521 690.59 738 722 153.2
A 13 248 45622 293.08 738 722 153.2
B 4 171 585363 4021.64 739 716 145.4
B 0 200 252330 1730.79 739 716 145.4
B 5 172 143205 980.15 739 716 145.4
C 12 2 709520 4165.17 721 726 170.2
C 14 254 491216 2882.32 721 726 170.2
C 0 207 10199 55.67 721 726 170.2
D 2 165 1547401 9593.5 642 622 161.2
D 2 37 1509720 9359.79 642 622 161.2
D 10 181 206834 1278.98 642 622 161.2

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