ASTROSAT CZTI

Data Quality Report

Orbit 07462

Creation date: 2024-06-27T15:20:04.046152
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/AS1A02_108T01_9000001024_07462cztM0_level2.evt modeM0/AS1A02_108T01_9000001024_07462cztM0_level2_quad_clean.evt
Size (bytes)661,668,48088,087,680
Size631.0 MB 84.0 MB
Events in quadrant A9,738,587505,296
Events in quadrant B3,222,879576,430
Events in quadrant C3,215,974561,618
Events in quadrant D3,385,944535,476

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338222
B0144211
C0144851
D0149031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7013249035.505490%
B7013590.841295%
C7013560.798517%
D7013721.026665%

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 7423 7014 2367 2367 31.89% 33.75%
B 7423 7014 2 2 0.03% 0.03%
C 7423 7014 10 10 0.13% 0.14%
D 7423 7014 26 26 0.35% 0.37%

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 15 239 6963257 51513.19 659 644 135.2
A 15 234 230463 1700.33 659 644 135.2
A 0 226 6191 41.04 659 644 135.2
B 0 214 58072 368.92 808 787 155.3
B 12 111 16430 100.74 808 787 155.3
B 4 81 15965 97.75 808 787 155.3
C 1 16 117997 633.5 788 790 185.0
C 8 128 14350 73.29 788 790 185.0
C 8 112 6307 29.82 788 790 185.0
D 12 221 146431 760.26 780 755 191.6
D 1 52 87519 452.81 780 755 191.6
D 5 233 81677 422.32 780 755 191.6

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