ASTROSAT CZTI

Data Quality Report

Orbit 59379

Creation date: 2026-09-18T15:32:18.998930
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/AS1A14_033T01_9000006608_59379cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59379cztM0_level2_quad_clean.evt
Size (bytes)1,585,419,840240,618,240
Size1.5 GB 229.5 MB
Events in quadrant A22,670,8571,166,150
Events in quadrant B10,997,3651,806,277
Events in quadrant C8,315,0021,653,105
Events in quadrant D15,277,2201,388,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0805073
B0459053
C0387703
D0589553

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18437580031.458480%
B184377624.132993%
C184381200.650830%
D18438187210.152945%

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 20092 18439 5675 5675 28.25% 30.78%
B 20092 18437 418 418 2.08% 2.27%
C 20093 18441 84 84 0.42% 0.46%
D 20093 18440 1768 1768 8.80% 9.59%

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 15 233 15896630 39149.29 1661 1619 406.0
A 10 251 228218 558.11 1661 1619 406.0
A 3 245 62032 148.8 1661 1619 406.0
B 4 236 1869575 4518.8 1937 1858 413.3
B 5 185 502356 1210.92 1937 1858 413.3
B 4 171 314709 756.92 1937 1858 413.3
C 6 223 328073 618.71 1927 1911 527.2
C 13 3 123185 230.05 1927 1911 527.2
C 3 233 99048 184.26 1927 1911 527.2
D 12 110 4972641 9580.92 1841 1757 518.8
D 1 27 1348886 2596.47 1841 1757 518.8
D 1 3 681845 1310.81 1841 1757 518.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct