ASTROSAT CZTI

Data Quality Report

Orbit 53025

Creation date: 2025-07-18T13:46:41.141994
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_011T07_9000006488_53025cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53025cztM0_level2_quad_clean.evt
Size (bytes)1,036,491,84068,944,320
Size988.5 MB 65.8 MB
Events in quadrant A16,306,9101,712
Events in quadrant B5,250,238621,889
Events in quadrant C6,919,723539,582
Events in quadrant D9,352,967440,369

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0531420
B0204380
C0253680
D0326131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6945693199.798416%
B694679411.431039%
C6946103114.843075%
D6945207929.935205%

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 6944 6944 6523 6523 93.94% 93.94%
B 6946 6946 627 627 9.03% 9.03%
C 6946 6946 990 990 14.25% 14.25%
D 6944 6944 1964 1964 28.28% 28.28%

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 9 191 15458638 527088.36 108 105 29.3
A 7 206 233897 7971.59 108 105 29.3
A 15 190 59104 2011.68 108 105 29.3
B 10 44 1466246 10184.36 680 657 143.9
B 2 249 277918 1926.68 680 657 143.9
B 4 81 160923 1113.69 680 657 143.9
C 15 224 1823302 10174.13 653 647 179.1
C 1 241 1443976 8056.72 653 647 179.1
C 7 80 247658 1378.83 653 647 179.1
D 12 17 3400051 19400.57 609 581 175.2
D 8 176 1748809 9977.03 609 581 175.2
D 15 78 435166 2480.15 609 581 175.2

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