ASTROSAT CZTI

Data Quality Report

Orbit 43682

Creation date: 2024-06-27T22:54:29.099555
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/AS1A12_018T01_9000005896_43682cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43682cztM0_level2_quad_clean.evt
Size (bytes)1,312,214,400110,174,400
Size1.2 GB 105.1 MB
Events in quadrant A13,753,231836,646
Events in quadrant B4,451,665876,883
Events in quadrant C18,747,600384,639
Events in quadrant D11,011,148680,754

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0463420
B0187870
C0611727
D0382770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7936204225.730847%
B79371221.537105%
C7936697287.852823%
D7936217927.457157%

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 7936 7936 1336 1336 16.83% 16.83%
B 7937 7937 37 37 0.47% 0.47%
C 7936 7936 5774 5774 72.76% 72.76%
D 7936 7936 1594 1594 20.09% 20.09%

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 15 222 8502917 48812.61 843 827 174.2
A 10 83 939391 5388.53 843 827 174.2
A 14 63 440125 2522.12 843 827 174.2
B 5 255 280461 1641.28 881 855 170.4
B 5 235 178771 1044.36 881 855 170.4
B 12 3 126072 735.02 881 855 170.4
C 15 142 12484578 124625.48 424 426 100.2
C 15 158 2242963 22386.56 424 426 100.2
C 15 174 1675087 16717.63 424 426 100.2
D 4 221 2899982 14200.03 784 756 204.2
D 1 52 1115947 5462.06 784 756 204.2
D 14 210 705973 3454.06 784 756 204.2

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