ASTROSAT CZTI

Data Quality Report

Orbit 27435

Creation date: 2024-06-27T19:40:03.750328
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_249T01_9000003934_27435cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27435cztM0_level2_quad_clean.evt
Size (bytes)592,657,92084,072,960
Size565.2 MB 80.2 MB
Events in quadrant A3,871,953513,093
Events in quadrant B4,185,308511,220
Events in quadrant C3,912,373489,391
Events in quadrant D5,447,226486,878

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164440
B0172600
C0165330
D0216230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78462292.918685%
B78463053.887331%
C78463033.861840%
D78464786.092276%

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 8401 7848 0 0 0.00% 0.00%
B 8401 7847 17 17 0.20% 0.22%
C 8401 7847 1 1 0.01% 0.01%
D 8401 7848 195 195 2.32% 2.48%

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 13 254 12807 57.89 1003 978 204.3
A 3 137 9906 43.69 1003 978 204.3
A 0 226 8375 36.2 1003 978 204.3
B 0 189 167913 871.32 985 959 191.6
B 0 190 36440 185.17 985 959 191.6
B 15 32 30747 155.46 985 959 191.6
C 14 238 150164 655.28 954 958 227.7
C 10 22 20260 84.77 954 958 227.7
C 7 221 14625 60.02 954 958 227.7
D 1 52 1480729 6374.79 964 938 232.1
D 2 250 196843 843.94 964 938 232.1
D 12 227 79609 338.91 964 938 232.1

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