ASTROSAT CZTI

Data Quality Report

Orbit 36204

Creation date: 2022-06-09T07:13:57.661906
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/AS1A11_080T02_9000005176_36204cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36204cztM0_level2_quad_clean.evt
Size (bytes)169,519,68015,399,360
Size161.7 MB 14.7 MB
Events in quadrant A1,040,42085,193
Events in quadrant B1,190,05786,106
Events in quadrant C1,557,58579,367
Events in quadrant D1,217,11178,904

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041942
B046991
C058111
D048271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186550.268097%
B1865442.359249%
C18651367.292225%
D1865512.734584%

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 4018 1866 0 0 0.00% 0.00%
B 4018 1866 25 25 0.62% 1.34%
C 4018 1866 99 99 2.46% 5.31%
D 4018 1866 38 38 0.95% 2.04%

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 77679 1628.15 228 223 47.6
A 8 144 28494 594.26 228 223 47.6
A 15 223 28292 590.02 228 223 47.6
B 5 172 177186 3901.68 226 220 45.4
B 0 190 53367 1171.77 226 220 45.4
B 15 32 23892 521.91 226 220 45.4
C 4 254 493363 9441.52 218 220 52.2
C 0 10 86494 1651.77 218 220 52.2
C 15 214 84689 1617.21 218 220 52.2
D 13 249 91672 1638.79 219 213 55.8
D 12 6 54656 975.53 219 213 55.8
D 2 153 54554 973.7 219 213 55.8

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