ASTROSAT CZTI

Data Quality Report

Orbit 06698

Creation date: 2024-06-27T15:10:30.552228
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/AS1T01_145T01_9000000916_06698cztM0_level2.evt modeM0/AS1T01_145T01_9000000916_06698cztM0_level2_quad_clean.evt
Size (bytes)1,170,728,640285,661,440
Size1.1 GB 272.4 MB
Events in quadrant A7,534,2561,929,291
Events in quadrant B7,647,2301,939,298
Events in quadrant C6,894,9961,911,901
Events in quadrant D12,285,2651,756,352

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0336284
B0338763
C0327963
D0479373

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161661350.835086%
B161661300.804157%
C16166810.501052%
D1616612087.472473%

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 18946 16169 22 22 0.12% 0.14%
B 18946 16169 16 16 0.08% 0.10%
C 18946 16169 1 1 0.01% 0.01%
D 18946 16169 868 868 4.58% 5.37%

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 274879 739.92 1822 1780 369.1
A 13 251 177099 475.0 1822 1780 369.1
A 0 226 18714 45.88 1822 1780 369.1
B 4 80 180279 511.48 1838 1795 349.0
B 0 214 103957 292.77 1838 1795 349.0
B 4 173 58161 161.53 1838 1795 349.0
C 9 247 33369 78.06 1754 1759 405.0
C 9 54 14629 31.78 1754 1759 405.0
C 13 61 13981 30.18 1754 1759 405.0
D 2 33 2758520 6690.67 1691 1638 412.0
D 8 195 1729281 4192.81 1691 1638 412.0
D 2 152 548507 1327.2 1691 1638 412.0

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