ASTROSAT CZTI

Data Quality Report

Orbit 43956

Creation date: 2024-06-27T22:57:39.030691
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_025T01_9000005920_43956cztM0_level2.fits modeM0/AS1A13_025T01_9000005920_43956cztM0_level2_quad_clean.evt
Size (bytes)615,147,840121,711,680
Size586.7 MB 116.1 MB
Events in quadrant A8,227,610745,551
Events in quadrant B5,160,572818,266
Events in quadrant C4,007,949834,388
Events in quadrant D4,763,446739,118

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300551
B0207171
C0175871
D0196501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7879114414.519609%
B78796087.716715%
C78792012.551085%
D78794105.203706%

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 7879 7879 515 515 6.54% 6.54%
B 7878 7878 125 125 1.59% 1.59%
C 7879 7879 38 38 0.48% 0.48%
D 7879 7879 176 176 2.23% 2.23%

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 14 238 2197786 11967.84 877 855 183.6
A 10 83 1237797 6738.28 877 855 183.6
A 15 222 1131641 6159.99 877 855 183.6
B 0 200 989122 5458.24 905 873 181.1
B 5 172 325816 1794.71 905 873 181.1
B 4 171 118525 649.81 905 873 181.1
C 14 254 258707 1213.18 902 904 212.5
C 15 157 155763 728.74 902 904 212.5
C 3 233 52759 244.02 902 904 212.5
D 12 17 272701 1207.32 894 863 225.2
D 13 171 262090 1160.19 894 863 225.2
D 5 235 248822 1101.26 894 863 225.2

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