ASTROSAT CZTI

Data Quality Report

Orbit 43207

Creation date: 2024-06-27T22:49:18.138444
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/AS1A09_036T17_9000005858_43207cztM0_level2.fits modeM0/AS1A09_036T17_9000005858_43207cztM0_level2_quad_clean.evt
Size (bytes)953,844,480250,634,880
Size909.7 MB 239.0 MB
Events in quadrant A10,051,8291,659,809
Events in quadrant B7,646,7221,719,594
Events in quadrant C7,598,5081,635,251
Events in quadrant D8,799,4031,494,670

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396064
B0333354
C0324635
D0371734

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156404102.621483%
B156411490.952625%
C15640680.434783%
D156402981.905371%

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 19817 15643 282 282 1.42% 1.80%
B 19818 15644 90 90 0.45% 0.58%
C 19817 15643 53 53 0.27% 0.34%
D 19817 15643 271 271 1.37% 1.73%

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 10 83 1593478 4567.13 1700 1666 348.5
A 15 237 1418661 4065.56 1700 1666 348.5
A 2 79 168229 477.89 1700 1666 348.5
B 0 229 617813 1867.99 1708 1664 329.8
B 0 186 103528 308.82 1708 1664 329.8
B 0 190 66364 196.15 1708 1664 329.8
C 15 214 638187 1610.0 1674 1685 395.3
C 14 254 301402 758.12 1674 1685 395.3
C 4 254 127932 319.33 1674 1685 395.3
D 1 52 1888571 4618.99 1666 1619 408.5
D 12 6 157470 381.5 1666 1619 408.5
D 12 218 85440 205.18 1666 1619 408.5

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