ASTROSAT CZTI

Data Quality Report

Orbit 47867

Creation date: 2024-08-05T12:09:42.639159
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/AS1A09_038T20_9000006366_47867cztM0_level2.fits modeM0/AS1A09_038T20_9000006366_47867cztM0_level2_quad_clean.evt
Size (bytes)473,915,520110,738,880
Size452.0 MB 105.6 MB
Events in quadrant A6,660,706718,882
Events in quadrant B3,089,593766,033
Events in quadrant C2,893,583746,399
Events in quadrant D4,399,600672,556

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242582
B0137592
C0131712
D0174362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64372443.790586%
B6437821.273885%
C6437450.699083%
D64371181.833152%

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 7607 6438 62 62 0.82% 0.96%
B 7607 6438 16 16 0.21% 0.25%
C 7607 6438 1 1 0.01% 0.02%
D 7607 6438 73 73 0.96% 1.13%

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 3876471 26298.97 714 699 147.4
A 0 31 21303 139.81 714 699 147.4
A 3 137 7832 48.4 714 699 147.4
B 5 255 138980 996.26 724 700 138.8
B 0 183 59416 423.03 724 700 138.8
B 12 111 17669 122.26 724 700 138.8
C 12 2 16680 93.93 732 734 169.8
C 14 254 13042 72.5 732 734 169.8
C 14 67 5916 30.52 732 734 169.8
D 2 165 840734 4659.07 720 697 180.3
D 2 37 451585 2500.75 720 697 180.3
D 12 2 112758 621.52 720 697 180.3

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