ASTROSAT CZTI

Data Quality Report

Orbit 46552

Creation date: 2024-06-27T23:24:39.145781
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_091T08_9000006228_46552cztM0_level2.fits modeM0/AS1A13_091T08_9000006228_46552cztM0_level2_quad_clean.evt
Size (bytes)626,581,440120,876,480
Size597.6 MB 115.3 MB
Events in quadrant A6,921,355815,218
Events in quadrant B3,958,508839,657
Events in quadrant C4,982,952781,182
Events in quadrant D6,738,048690,525

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251560
B0169381
C0201840
D0252510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7664951.239562%
B7663660.861281%
C76633294.293358%
D76635767.516638%

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 7664 7664 2 2 0.03% 0.03%
B 7663 7663 21 21 0.27% 0.27%
C 7663 7663 301 301 3.93% 3.93%
D 7663 7663 584 584 7.62% 7.62%

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 3402925 18739.14 870 849 181.5
A 13 248 38132 205.36 870 849 181.5
A 9 191 37114 199.75 870 849 181.5
B 5 172 210111 1229.49 861 833 170.2
B 2 2 156612 915.19 861 833 170.2
B 3 112 72785 422.71 861 833 170.2
C 14 254 982526 4943.02 840 844 198.6
C 1 241 574736 2889.69 840 844 198.6
C 1 3 69809 347.26 840 844 198.6
D 1 52 1330271 6333.09 830 802 209.9
D 5 33 1036649 4934.38 830 802 209.9
D 13 249 362884 1724.82 830 802 209.9

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