ASTROSAT CZTI

Data Quality Report

Orbit 20210310_A10_102T08_9000004240_level2

Creation date: 2025-12-22T16:20:33.347503
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/AS1A10_102T08_9000004240cztM0_level2.fits modeM0/AS1A10_102T08_9000004240cztM0_level2_quad_clean.evt
Size (bytes)521,009,280362,586,240
Size496.9 MB 345.8 MB
Events in quadrant A3,491,3622,252,022
Events in quadrant B3,343,6442,264,554
Events in quadrant C3,278,4901,970,524
Events in quadrant D1,943,740786,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01165700
B01154990
C01224630
D03761590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010980
B011000
C010980
D010980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A540249831.819562%
B5400911822.188524%
C5402138377.102793%
D538503434363.775302%

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 68363 54116 0 0 0.00% 0.00%
B 68363 54096 0 0 0.00% 0.00%
C 68363 54053 0 0 0.00% 0.00%
D 68363 51711 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 2816 8.88 911 857 220.7
A 7 110 2677 8.25 911 857 220.7
A 9 19 2571 7.77 911 857 220.7
B 2 9 2636 10.28 885 845 174.2
B 3 17 2242 8.02 885 845 174.2
B 5 232 2237 7.99 885 845 174.2
C 1 80 2497 7.67 865 809 220.1
C 1 81 2448 7.45 865 809 220.1
C 12 241 2268 6.63 865 809 220.1
D 15 46 1440 6.34 555 507 147.2
D 3 14 1378 5.92 555 507 147.2
D 6 231 1376 5.91 555 507 147.2

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