ASTROSAT CZTI

Data Quality Report

Orbit 18333

Creation date: 2024-06-27T17:48:28.469522
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/AS1A06_006T01_9000002720_18333cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18333cztM0_level2_quad_clean.evt
Size (bytes)1,314,123,840225,581,760
Size1.2 GB 215.1 MB
Events in quadrant A8,384,3011,428,937
Events in quadrant B9,200,7391,430,699
Events in quadrant C8,621,7251,400,777
Events in quadrant D12,366,3881,321,967

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371173
B0390573
C0374953
D0490553

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18134670.369472%
B181351280.705817%
C181341210.667255%
D181348414.637697%

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 20179 18137 5 5 0.02% 0.03%
B 20180 18138 34 34 0.17% 0.19%
C 20179 18137 0 0 0.00% 0.00%
D 20179 18137 677 677 3.35% 3.73%

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 15 174 67063 148.98 2158 2112 436.0
A 0 226 19296 39.41 2158 2112 436.0
A 12 194 15933 31.7 2158 2112 436.0
B 7 220 395348 951.61 2161 2109 413.2
B 0 197 146601 349.66 2161 2109 413.2
B 0 190 63383 148.28 2161 2109 413.2
C 14 238 310683 638.5 2067 2083 483.3
C 3 233 205513 420.9 2067 2083 483.3
C 0 207 23515 44.34 2067 2083 483.3
D 1 52 1892894 3796.12 2047 1991 498.1
D 13 168 1438239 2883.37 2047 1991 498.1
D 7 238 436571 872.45 2047 1991 498.1

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