ASTROSAT CZTI

Data Quality Report

Orbit 52578

Creation date: 2025-06-17T22:20:08.659730
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/AS1C09_011T06_9000006478_52578cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52578cztM0_level2_quad_clean.evt
Size (bytes)1,774,670,400211,619,520
Size1.7 GB 201.8 MB
Events in quadrant A9,364,7721,476,463
Events in quadrant B12,867,7501,567,758
Events in quadrant C16,402,3571,272,365
Events in quadrant D25,791,633955,397

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397551
B0498241
C0602771
D0881071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164434072.475217%
B164436824.147662%
C16444203612.381416%
D16444515331.336658%

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 16838 16444 294 294 1.75% 1.79%
B 16838 16444 369 369 2.19% 2.24%
C 16839 16445 1959 1959 11.63% 11.91%
D 16839 16445 5055 5055 30.02% 30.74%

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 5 243 651482 1541.28 1698 1652 421.6
A 4 249 480258 1135.17 1698 1652 421.6
A 4 61 295856 697.8 1698 1652 421.6
B 10 254 2186737 6171.69 1668 1610 354.1
B 7 0 1426486 4024.43 1668 1610 354.1
B 4 171 545451 1536.03 1668 1610 354.1
C 15 248 6112032 14041.84 1579 1566 435.2
C 12 249 1567455 3598.41 1579 1566 435.2
C 15 147 584936 1340.58 1579 1566 435.2
D 15 125 4947685 11792.85 1469 1404 419.4
D 7 126 4329052 10317.92 1469 1404 419.4
D 6 42 2886579 6878.79 1469 1404 419.4

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