ASTROSAT CZTI

Data Quality Report

Orbit 06626

Creation date: 2024-06-27T15:09:27.194022
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/AS1A02_082T01_9000000898_06626cztM0_level2.evt modeM0/AS1A02_082T01_9000000898_06626cztM0_level2_quad_clean.evt
Size (bytes)1,199,010,240230,446,080
Size1.1 GB 219.8 MB
Events in quadrant A7,982,5291,485,622
Events in quadrant B8,251,6671,475,397
Events in quadrant C7,477,6331,446,287
Events in quadrant D11,448,5781,397,995

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353964
B0359983
C0345703
D0458223

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03480
B03480
C03480
D03480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170351110.651600%
B170351590.933372%
C17035550.322865%
D170353311.943058%

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 19970 17038 7 7 0.04% 0.04%
B 19970 17038 33 33 0.17% 0.19%
C 19970 17038 0 0 0.00% 0.00%
D 19970 17038 164 164 0.82% 0.96%

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 8 15 286798 712.44 1980 1935 399.8
A 13 248 50015 120.25 1980 1935 399.8
A 14 111 22500 51.43 1980 1935 399.8
B 0 219 323430 842.46 1992 1945 381.6
B 4 81 62436 158.52 1992 1945 381.6
B 4 48 61674 156.52 1992 1945 381.6
C 12 4 18322 36.96 1910 1917 443.9
C 13 61 15000 29.48 1910 1917 443.9
C 1 16 8489 14.81 1910 1917 443.9
D 8 195 2908277 6324.56 1893 1836 459.5
D 2 33 712930 1547.37 1893 1836 459.5
D 1 239 147851 317.74 1893 1836 459.5

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