ASTROSAT CZTI

Data Quality Report

Orbit 17100

Creation date: 2024-06-27T17:32:05.109678
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/AS1A05_004T06_9000002536_17100cztM0_level2.evt modeM0/AS1A05_004T06_9000002536_17100cztM0_level2_quad_clean.evt
Size (bytes)532,549,44095,083,200
Size507.9 MB 90.7 MB
Events in quadrant A3,741,663592,645
Events in quadrant B3,985,970596,519
Events in quadrant C4,001,519573,884
Events in quadrant D3,857,592562,690

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165792
B0169942
C0169582
D0171472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79623524.421000%
B79633784.746955%
C79633404.269748%
D79633123.918121%

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 8292 7964 1 1 0.01% 0.01%
B 8293 7965 10 10 0.12% 0.13%
C 8293 7966 0 0 0.00% 0.00%
D 8293 7966 35 35 0.42% 0.44%

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 4 2 26364 129.45 966 941 196.4
A 0 226 8442 38.19 966 941 196.4
A 3 137 7193 31.83 966 941 196.4
B 7 220 81025 430.21 962 935 186.2
B 0 246 28571 148.45 962 935 186.2
B 0 189 26290 136.2 962 935 186.2
C 3 233 203773 931.19 925 927 217.8
C 14 238 142676 650.72 925 927 217.8
C 5 112 15727 67.94 925 927 217.8
D 10 70 148036 641.37 941 913 229.4
D 5 222 47661 203.8 941 913 229.4
D 2 234 31654 134.01 941 913 229.4

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