ASTROSAT CZTI

Data Quality Report

Orbit 07770

Creation date: 2024-06-27T15:23:45.938609
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_132T01_9000001068_07770cztM0_level2.evt modeM0/AS1A02_132T01_9000001068_07770cztM0_level2_quad_clean.evt
Size (bytes)433,275,84098,760,960
Size413.2 MB 94.2 MB
Events in quadrant A2,998,556635,213
Events in quadrant B3,258,278652,019
Events in quadrant C3,009,479649,565
Events in quadrant D3,418,111605,338

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131953
B0139062
C0131842
D0144782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6429130.202209%
B6429550.855499%
C642960.093327%
D6429350.544408%

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 7609 6430 0 0 0.00% 0.00%
B 7609 6430 16 16 0.21% 0.25%
C 7609 6430 0 0 0.00% 0.00%
D 7609 6430 20 20 0.26% 0.31%

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 0 226 7257 40.74 776 760 159.5
A 12 194 6707 37.29 776 760 159.5
A 8 15 4961 26.34 776 760 159.5
B 4 173 59013 385.31 792 773 151.2
B 4 239 53348 347.83 792 773 151.2
B 4 81 28711 184.84 792 773 151.2
C 12 4 6684 32.92 770 778 179.4
C 13 61 5864 28.35 770 778 179.4
C 8 222 2161 7.71 770 778 179.4
D 2 152 203383 1092.37 756 735 185.5
D 1 52 199865 1073.41 756 735 185.5
D 12 221 100117 535.72 756 735 185.5

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