ASTROSAT CZTI

Data Quality Report

Orbit 47686

Creation date: 2024-07-23T06:57:01.063997
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/AS1A13_082T01_9000006342_47686cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47686cztM0_level2_quad_clean.evt
Size (bytes)529,545,600115,649,280
Size505.0 MB 110.3 MB
Events in quadrant A7,579,219760,293
Events in quadrant B3,637,373788,135
Events in quadrant C3,347,301756,910
Events in quadrant D4,471,559687,545

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276041
B0156971
C0152441
D0182661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73082984.077723%
B73091041.422903%
C7309580.793542%
D73091862.544808%

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 7673 7309 23 23 0.30% 0.31%
B 7674 7310 16 16 0.21% 0.22%
C 7674 7310 15 15 0.20% 0.21%
D 7674 7310 119 119 1.55% 1.63%

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 4104296 23752.58 820 800 172.8
A 9 191 257565 1486.25 820 800 172.8
A 14 235 22713 126.84 820 800 172.8
B 0 200 131277 790.35 824 797 165.1
B 0 190 101739 611.43 824 797 165.1
B 5 255 89179 535.35 824 797 165.1
C 14 254 176899 915.82 810 812 192.3
C 12 250 11074 53.37 810 812 192.3
C 13 61 5338 23.54 810 812 192.3
D 12 2 808482 3950.58 807 780 204.5
D 10 181 238349 1161.98 807 780 204.5
D 7 96 132528 644.4 807 780 204.5

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