ASTROSAT CZTI

Data Quality Report

Orbit czti

Creation date: 2025-06-30T12:43:11.689335
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_065T06_9000005914_43880cztM0_level2.fits modeM0/AS1A13_065T06_9000005914_43880cztM0_level2_quad_clean.evt
Size (bytes)458,127,360111,654,720
Size436.9 MB 106.5 MB
Events in quadrant A5,073,562729,965
Events in quadrant B3,527,074793,251
Events in quadrant C3,356,243742,678
Events in quadrant D4,494,461660,241

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 7723 6524 332 332 4.30% 5.09%
B 7722 6523 97 97 1.26% 1.49%
C 7722 6523 22 22 0.28% 0.34%
D 7722 6523 306 306 3.96% 4.69%

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 1058600 7057.16 735 721 149.9
A 15 223 1050772 7004.94 735 721 149.9
A 15 174 65692 433.42 735 721 149.9
B 4 170 308444 2159.4 744 721 142.5
B 0 200 159350 1113.16 744 721 142.5
B 0 183 47128 325.65 744 721 142.5
C 3 233 358679 2138.62 718 722 167.4
C 14 254 86981 515.36 718 722 167.4
C 15 173 32185 187.98 718 722 167.4
D 1 52 564706 3187.68 709 687 176.9
D 5 235 396351 2236.19 709 687 176.9
D 13 171 300539 1694.68 709 687 176.9

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