ASTROSAT CZTI

Data Quality Report

Orbit 52890

Creation date: 2025-07-16T12:44:02.346188
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_011T08_9000006482_52890cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52890cztM0_level2_quad_clean.evt
Size (bytes)891,541,44082,998,720
Size850.2 MB 79.2 MB
Events in quadrant A13,837,222293,896
Events in quadrant B7,713,322576,411
Events in quadrant C4,343,805617,409
Events in quadrant D6,589,356557,594

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0456971
B0275091
C0175311
D0241561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6704431364.334726%
B6704161124.030430%
C67052012.997763%
D670569710.395227%

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 7854 6704 4090 4090 52.08% 61.01%
B 7854 6704 1403 1403 17.86% 20.93%
C 7855 6705 151 151 1.92% 2.25%
D 7855 6705 639 639 8.13% 9.53%

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 10288033 71244.02 581 567 144.4
A 12 17 492977 3410.1 581 567 144.4
A 8 43 249837 1726.28 581 567 144.4
B 8 3 4174361 29583.22 667 644 141.1
B 10 254 363983 2575.34 667 644 141.1
B 4 81 86212 606.5 667 644 141.1
C 7 80 535570 2822.58 694 688 189.5
C 2 12 175359 921.74 694 688 189.5
C 3 233 133784 702.35 694 688 189.5
D 8 176 1681619 8625.84 679 649 194.9
D 15 125 687679 3525.47 679 649 194.9
D 10 172 338817 1735.3 679 649 194.9

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