ASTROSAT CZTI

Data Quality Report

Orbit 45935

Creation date: 2024-06-27T23:17:53.474994
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_033T03_9000006144_45935cztM0_level2.fits modeM0/AS1A13_033T03_9000006144_45935cztM0_level2_quad_clean.evt
Size (bytes)580,236,480107,107,200
Size553.4 MB 102.1 MB
Events in quadrant A5,856,923711,343
Events in quadrant B6,196,620703,124
Events in quadrant C3,188,597730,018
Events in quadrant D5,723,197636,363

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220672
B0231432
C0142042
D0216512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66302153.242836%
B66306549.864253%
C6630590.889894%
D66304246.395173%

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 7660 6631 38 38 0.50% 0.57%
B 7660 6630 369 369 4.82% 5.57%
C 7660 6631 33 33 0.43% 0.50%
D 7660 6631 355 355 4.63% 5.35%

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 2974487 19250.13 738 722 154.5
A 0 247 24599 154.56 738 722 154.5
A 3 137 8648 51.31 738 722 154.5
B 3 112 3267032 22929.37 725 703 142.5
B 12 111 17993 121.37 725 703 142.5
B 11 111 16611 111.67 725 703 142.5
C 12 250 204586 1156.32 742 746 176.3
C 14 254 53541 299.49 742 746 176.3
C 3 233 11365 60.24 742 746 176.3
D 11 241 1228040 6647.49 722 699 184.6
D 1 52 974217 5272.74 722 699 184.6
D 12 233 276929 1496.11 722 699 184.6

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