ASTROSAT CZTI

Data Quality Report

Orbit 47639

Creation date: 2024-07-20T02:19:08.881242
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_071T01_9000006340_47639cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47639cztM0_level2_quad_clean.evt
Size (bytes)545,065,920123,756,480
Size519.8 MB 118.0 MB
Events in quadrant A8,139,489817,660
Events in quadrant B3,744,413842,031
Events in quadrant C3,938,903796,702
Events in quadrant D3,752,000751,146

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0295930
B0166130
C0174940
D0168870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77612853.672207%
B7762871.120845%
C77621141.468694%
D7762270.347848%

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 7761 7761 79 79 1.02% 1.02%
B 7762 7762 30 30 0.39% 0.39%
C 7762 7762 99 99 1.28% 1.28%
D 7762 7762 32 32 0.41% 0.41%

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 4176436 23048.89 867 849 181.2
A 9 191 324927 1788.88 867 849 181.2
A 13 248 202173 1111.29 867 849 181.2
B 0 190 106551 614.63 867 839 172.0
B 5 172 66904 384.12 867 839 172.0
B 5 255 47514 271.38 867 839 172.0
C 14 254 568891 2834.72 842 845 200.4
C 3 233 64698 318.65 842 845 200.4
C 1 3 8092 36.16 842 845 200.4
D 2 249 156937 733.98 850 822 212.7
D 8 176 77179 359.0 850 822 212.7
D 12 218 59800 277.29 850 822 212.7

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