ASTROSAT CZTI

Data Quality Report

Orbit 45077

Creation date: 2024-06-27T23:09:39.969623
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_020T01_9000006040_45077cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45077cztM0_level2_quad_clean.evt
Size (bytes)1,308,444,480277,387,200
Size1.2 GB 264.5 MB
Events in quadrant A14,098,5871,846,922
Events in quadrant B8,540,8871,925,956
Events in quadrant C9,517,3911,834,875
Events in quadrant D14,892,8521,555,841

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0559443
B0378603
C0410533
D0567883

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179144092.283131%
B179152201.228021%
C179154662.601172%
D1791516309.098521%

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 19629 17917 20 20 0.10% 0.11%
B 19630 17918 16 16 0.08% 0.09%
C 19630 17917 334 334 1.70% 1.86%
D 19630 17917 1224 1224 6.24% 6.83%

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 6121158 14688.24 2010 1967 416.6
A 13 248 76150 178.07 2010 1967 416.6
A 10 248 60884 141.42 2010 1967 416.6
B 0 183 279743 692.2 2018 1952 401.3
B 5 255 107884 263.96 2018 1952 401.3
B 0 186 65506 158.36 2018 1952 401.3
C 14 254 1624185 3505.48 1966 1976 462.8
C 3 233 70060 147.12 1966 1976 462.8
C 12 2 53187 110.66 1966 1976 462.8
D 5 235 2595749 5444.92 1906 1853 476.4
D 2 249 1130572 2369.33 1906 1853 476.4
D 9 49 675582 1414.24 1906 1853 476.4

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