ASTROSAT CZTI

Data Quality Report

Orbit 44782

Creation date: 2024-06-27T23:06:30.414320
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_004T13_9000006022_44782cztM0_level2.fits modeM0/AS1A13_004T13_9000006022_44782cztM0_level2_quad_clean.evt
Size (bytes)609,419,520126,910,080
Size581.2 MB 121.0 MB
Events in quadrant A6,775,069804,155
Events in quadrant B4,186,796871,147
Events in quadrant C4,281,130860,468
Events in quadrant D6,674,225732,891

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271202
B0183202
C0187272
D0255692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82627669.271363%
B82634275.167615%
C82633113.763766%
D826384210.190004%

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 9132 8262 283 283 3.10% 3.43%
B 9133 8264 62 62 0.68% 0.75%
C 9133 8265 161 161 1.76% 1.95%
D 9133 8264 591 591 6.47% 7.15%

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 2297704 11966.73 927 906 191.9
A 15 223 738087 3840.85 927 906 191.9
A 13 248 103375 533.88 927 906 191.9
B 5 172 180298 945.06 949 916 189.8
B 5 255 136177 712.61 949 916 189.8
B 12 111 24653 125.06 949 916 189.8
C 12 2 428764 1941.04 943 946 220.4
C 14 254 97765 439.27 943 946 220.4
C 2 14 31407 138.2 943 946 220.4
D 1 52 774020 3449.79 896 865 224.1
D 5 222 559881 2494.31 896 865 224.1
D 13 249 462475 2059.68 896 865 224.1

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