ASTROSAT CZTI

Data Quality Report

Orbit 36144

Creation date: 2022-08-10T20:12:12.102726
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/AS1T04_069T01_9000005158_36144cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36144cztM0_level2_quad_clean.evt
Size (bytes)428,820,48061,272,000
Size409.0 MB 58.4 MB
Events in quadrant A2,504,851390,506
Events in quadrant B3,366,444392,132
Events in quadrant C2,805,236377,109
Events in quadrant D3,978,227352,194

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103583
B0130672
C0111192
D0150522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4890140.286299%
B48902354.805726%
C4890641.308793%
D48903477.096115%

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 6923 4891 8 8 0.12% 0.16%
B 6923 4891 176 176 2.54% 3.60%
C 6923 4891 52 52 0.75% 1.06%
D 6923 4891 298 298 4.30% 6.09%

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 165771 1379.33 593 584 119.8
A 9 143 23241 189.19 593 584 119.8
A 13 6 10563 83.33 593 584 119.8
B 5 172 639147 5677.41 584 571 112.5
B 4 171 258271 2291.14 584 571 112.5
B 0 213 111593 987.07 584 571 112.5
C 15 214 207961 1552.47 572 578 133.6
C 0 10 190860 1424.45 572 578 133.6
C 1 23 141511 1055.03 572 578 133.6
D 12 17 842394 6249.79 552 537 134.7
D 1 52 445646 3304.4 552 537 134.7
D 12 6 158086 1169.61 552 537 134.7

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