ASTROSAT CZTI

Data Quality Report

Orbit 20201013_T03_243T01_9000003918_level2

Creation date: 2025-12-24T15:34:42.795408
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/AS1T03_243T01_9000003918cztM0_level2.fits modeM0/AS1T03_243T01_9000003918cztM0_level2_quad_clean.evt
Size (bytes)2,148,600,9601,687,991,040
Size2.0 GB 1.6 GB
Events in quadrant A13,583,0449,744,033
Events in quadrant B12,821,5469,669,350
Events in quadrant C12,950,9429,178,849
Events in quadrant D11,286,7348,099,662

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042880
B042900
C042900
D042880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03510
B03510
C03510
D03510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04509560
B04950000
C04444760
D05949800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21058927661.313459%
B21058564113.044376%
C21057135171.670220%
D210581113945.410745%

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 245962 210618 0 0 0.00% 0.00%
B 245962 210571 0 0 0.00% 0.00%
C 245962 210605 0 0 0.00% 0.00%
D 245962 210439 0 0 0.00% 0.00%

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 0 29 11370 9.54 3544 3343 841.4
A 7 110 10572 8.59 3544 3343 841.4
A 9 19 10181 8.13 3544 3343 841.4
B 2 9 9960 10.25 3391 3243 655.1
B 2 8 8399 7.87 3391 3243 655.1
B 5 128 8331 7.77 3391 3243 655.1
C 12 241 8829 6.54 3425 3206 859.4
C 9 209 8753 6.45 3425 3206 859.4
C 3 126 8633 6.31 3425 3206 859.4
D 3 14 8187 6.19 3222 2942 848.0
D 7 3 7983 5.94 3222 2942 848.0
D 6 231 7965 5.92 3222 2942 848.0

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