ASTROSAT CZTI

Data Quality Report

Orbit 47696

Creation date: 2024-07-24T12:18:12.329583
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_47696cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47696cztM0_level2_quad_clean.evt
Size (bytes)521,487,360117,152,640
Size497.3 MB 111.7 MB
Events in quadrant A7,723,020754,656
Events in quadrant B3,593,908792,398
Events in quadrant C3,437,326777,257
Events in quadrant D3,978,322710,049

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282273
B0157002
C0155844
D0169712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73644676.341662%
B73642373.218360%
C7363781.059351%
D73641842.498642%

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 7734 7364 6 6 0.08% 0.08%
B 7734 7364 4 4 0.05% 0.05%
C 7734 7364 5 5 0.06% 0.07%
D 7734 7364 74 74 0.96% 1.00%

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 4246281 23728.19 853 833 178.9
A 9 191 112791 625.74 853 833 178.9
A 14 248 34019 185.48 853 833 178.9
B 0 200 116973 671.59 859 830 172.9
B 12 111 22353 124.46 859 830 172.9
B 11 111 20895 116.03 859 830 172.9
C 12 2 98006 481.34 849 854 201.8
C 6 247 25760 123.4 849 854 201.8
C 13 61 5484 22.94 849 854 201.8
D 8 176 214295 993.96 855 829 214.8
D 12 2 176871 819.7 855 829 214.8
D 2 165 137020 634.14 855 829 214.8

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