ASTROSAT CZTI

Data Quality Report

Orbit 59055

Creation date: 2026-08-28T04:36:06.378300
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_004T02_9000006600_59055cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59055cztM0_level2_quad_clean.evt
Size (bytes)1,032,160,32085,469,760
Size984.3 MB 81.5 MB
Events in quadrant A3,750,188750,651
Events in quadrant B4,047,941791,961
Events in quadrant C10,549,486502,384
Events in quadrant D19,256,7982,530

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164300
B0174360
C0368070
D0625180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7772440.566135%
B77721732.225939%
C7772256933.054555%
D7772775199.729799%

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 7772 7772 27 27 0.35% 0.35%
B 7772 7772 106 106 1.36% 1.36%
C 7772 7772 1457 1457 18.75% 18.75%
D 7771 7771 6810 6810 87.63% 87.63%

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 14 238 134124 621.32 868 846 214.5
A 10 251 88800 410.03 868 846 214.5
A 3 14 54091 248.22 868 846 214.5
B 4 236 389369 2145.03 850 819 181.1
B 2 249 68771 375.14 850 819 181.1
B 5 185 60826 331.28 850 819 181.1
C 15 219 3616802 19875.44 664 658 181.9
C 15 198 3127190 17184.38 664 658 181.9
C 2 12 485987 2667.52 664 658 181.9
D 12 1 18567785 558101.39 112 106 33.3
D 6 239 77095 2314.11 112 106 33.3
D 2 62 72725 2182.76 112 106 33.3

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