ASTROSAT CZTI

Data Quality Report

Orbit 56046

Creation date: 2026-02-06T07:32:13.911737
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_083T03_9000006548_56046cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56046cztM0_level2_quad_clean.evt
Size (bytes)559,909,440110,067,840
Size534.0 MB 105.0 MB
Events in quadrant A6,491,282683,018
Events in quadrant B4,510,660772,153
Events in quadrant C4,382,999683,480
Events in quadrant D4,725,373642,201

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249482
B0193072
C0190702
D0198442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79326678.408976%
B79332172.735409%
C79331832.306820%
D79331171.474852%

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 8362 7935 606 606 7.25% 7.64%
B 8363 7936 120 120 1.43% 1.51%
C 8363 7936 126 126 1.51% 1.59%
D 8363 7936 84 84 1.00% 1.06%

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 12 115 949734 4716.1 808 786 201.2
A 7 64 937476 4655.18 808 786 201.2
A 4 249 889609 4417.29 808 786 201.2
B 5 185 527186 2978.52 826 797 176.7
B 10 247 146455 824.19 826 797 176.7
B 0 213 138044 776.6 826 797 176.7
C 15 199 482778 2219.67 800 793 217.1
C 13 3 329969 1515.95 800 793 217.1
C 15 147 110508 505.27 800 793 217.1
D 11 129 411882 1834.57 794 759 224.1
D 8 160 201676 896.56 794 759 224.1
D 6 239 177625 789.23 794 759 224.1

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