ASTROSAT CZTI

Data Quality Report

Orbit 04273

Creation date: 2024-06-27T14:39:40.199170
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/AS1G05_240T01_9000000536_04273cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04273cztM0_level2_quad_clean.evt
Size (bytes)647,732,16065,563,200
Size617.7 MB 62.5 MB
Events in quadrant A3,854,629379,813
Events in quadrant B5,596,433374,896
Events in quadrant C3,288,577368,052
Events in quadrant D6,382,898353,267

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162163
B0215282
C0151262
D0241822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73112223.036520%
B73112753.761455%
C7311981.340446%
D73112403.282725%

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 7786 7313 61 61 0.78% 0.83%
B 7786 7312 30 30 0.39% 0.41%
C 7786 7313 2 2 0.03% 0.03%
D 7786 7313 50 50 0.64% 0.68%

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 50 276970 1536.87 868 846 179.7
A 8 15 185476 1027.62 868 846 179.7
A 0 199 36732 199.74 868 846 179.7
B 3 0 1868854 11015.96 870 851 169.6
B 10 16 104932 613.79 870 851 169.6
B 8 3 99989 584.64 870 851 169.6
C 10 65 12676 60.15 837 842 196.7
C 13 61 6753 30.05 837 842 196.7
C 7 247 4515 18.67 837 842 196.7
D 11 132 2856092 13642.65 834 808 209.3
D 2 232 150065 713.16 834 808 209.3
D 1 52 82140 388.61 834 808 209.3

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