ASTROSAT CZTI

Data Quality Report

Orbit 20412

Creation date: 2024-06-27T18:15:06.094160
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_9000003016_20412cztM0_level2.evt modeM0/AS1A05_140T01_9000003016_20412cztM0_level2_quad_clean.evt
Size (bytes)512,092,80096,036,480
Size488.4 MB 91.6 MB
Events in quadrant A3,448,996618,978
Events in quadrant B3,729,492619,009
Events in quadrant C3,494,799596,638
Events in quadrant D4,357,261583,236

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144892
B0153022
C0145562
D0173962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70471161.646091%
B70471652.341422%
C70471692.398184%
D70472143.036753%

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 7662 7048 0 0 0.00% 0.00%
B 7662 7048 38 38 0.50% 0.54%
C 7662 7047 0 0 0.00% 0.00%
D 7662 7047 72 72 0.94% 1.02%

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 11 29 13656 71.71 890 871 178.3
A 0 226 7582 37.64 890 871 178.3
A 3 137 7325 36.2 890 871 178.3
B 4 216 139740 830.34 880 858 167.3
B 10 245 59915 353.09 880 858 167.3
B 0 189 50689 297.93 880 858 167.3
C 14 238 136168 679.54 853 859 199.1
C 7 220 19284 92.53 853 859 199.1
C 13 61 5917 25.4 853 859 199.1
D 1 52 489619 2320.31 865 841 210.7
D 6 143 239277 1131.89 865 841 210.7
D 13 153 140496 662.97 865 841 210.7

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