ASTROSAT CZTI

Data Quality Report

Orbit 53345

Creation date: 2025-08-08T12:58:39.554891
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_9000006492_53345cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53345cztM0_level2_quad_clean.evt
Size (bytes)951,894,72096,166,080
Size907.8 MB 91.7 MB
Events in quadrant A6,802,288653,499
Events in quadrant B8,423,348639,446
Events in quadrant C14,023,333419,952
Events in quadrant D5,373,804647,103

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258404
B0305660
C0471840
D0221060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7928112114.139758%
B7928174622.023209%
C7928381148.070131%
D79294285.397906%

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 7927 7927 1083 1083 13.66% 13.66%
B 7927 7927 1400 1400 17.66% 17.66%
C 7928 7928 3221 3221 40.63% 40.63%
D 7929 7929 413 413 5.21% 5.21%

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 15 174 3462806 17844.98 774 752 194.0
A 12 80 96542 493.74 774 752 194.0
A 3 27 64219 327.14 774 752 194.0
B 2 249 3327062 21443.11 732 706 155.1
B 4 206 766384 4935.89 732 706 155.1
B 10 28 518679 3339.08 732 706 155.1
C 15 158 6768473 36018.7 680 674 187.9
C 15 224 2304742 12262.41 680 674 187.9
C 12 252 579206 3078.99 680 674 187.9
D 8 176 1071528 4821.79 780 743 222.1
D 2 62 581576 2615.52 780 743 222.1
D 3 12 144693 648.21 780 743 222.1

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