ASTROSAT CZTI

Data Quality Report

Orbit 16712

Creation date: 2024-06-27T17:26:34.937537
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/AS1T03_024T01_9000002472_16712cztM0_level2.evt modeM0/AS1T03_024T01_9000002472_16712cztM0_level2_quad_clean.evt
Size (bytes)518,523,84085,965,120
Size494.5 MB 82.0 MB
Events in quadrant A3,763,165544,839
Events in quadrant B3,549,131557,677
Events in quadrant C3,163,064540,043
Events in quadrant D4,797,749517,837

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150332
B0144091
C0131651
D0187691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63483205.040958%
B63481171.843100%
C6348791.244486%
D63482063.245117%

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 7189 6350 193 193 2.68% 3.04%
B 7189 6350 38 38 0.53% 0.60%
C 7189 6350 4 4 0.06% 0.06%
D 7189 6350 102 102 1.42% 1.61%

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 666419 4187.33 775 759 159.0
A 9 143 112989 705.98 775 759 159.0
A 0 226 6870 38.44 775 759 159.0
B 3 209 169621 1110.46 783 763 152.1
B 15 35 128921 842.8 783 763 152.1
B 10 16 95710 624.4 783 763 152.1
C 14 238 114882 644.45 751 758 177.1
C 3 233 55722 310.38 751 758 177.1
C 0 207 41022 227.37 751 758 177.1
D 1 52 850371 4580.85 755 734 185.5
D 2 16 839892 4524.35 755 734 185.5
D 5 222 125004 670.01 755 734 185.5

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