ASTROSAT CZTI

Data Quality Report

Orbit 09122

Creation date: 2024-06-27T15:41:34.360746
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/AS1A03_105T01_9000001268_09122cztM0_level2.evt modeM0/AS1A03_105T01_9000001268_09122cztM0_level2_quad_clean.evt
Size (bytes)501,819,84075,542,400
Size478.6 MB 72.0 MB
Events in quadrant A4,263,331450,226
Events in quadrant B3,466,105455,044
Events in quadrant C3,292,229447,036
Events in quadrant D3,686,997433,719

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170704
B0149231
C0148431
D0159681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71972513.487564%
B71981361.889414%
C7198971.347597%
D71981662.306196%

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 7533 7198 87 87 1.15% 1.21%
B 7533 7198 0 0 0.00% 0.00%
C 7533 7198 0 0 0.00% 0.00%
D 7533 7198 50 50 0.66% 0.69%

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 8 5 816585 4601.25 869 851 177.3
A 1 162 40931 226.08 869 851 177.3
A 4 2 22923 124.5 869 851 177.3
B 0 214 54596 316.81 873 852 169.6
B 12 111 19373 109.18 873 852 169.6
B 11 111 15638 87.16 873 852 169.6
C 13 61 6251 27.41 842 846 197.2
C 14 67 3826 15.11 842 846 197.2
C 12 4 3171 11.79 842 846 197.2
D 1 52 259435 1241.71 837 815 208.3
D 2 14 202883 970.19 837 815 208.3
D 2 234 25862 120.26 837 815 208.3

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