ASTROSAT CZTI

Data Quality Report

Orbit 56552

Creation date: 2026-03-12T07:23:27.864123
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_060T01_9000006556_56552cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56552cztM0_level2_quad_clean.evt
Size (bytes)488,969,28093,263,040
Size466.3 MB 88.9 MB
Events in quadrant A4,086,312631,619
Events in quadrant B6,414,818568,399
Events in quadrant C3,406,150610,128
Events in quadrant D3,685,607558,677

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166253
B0236262
C0146032
D0154872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65261051.608949%
B6526133220.410665%
C6526530.812136%
D65261532.344468%

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 7586 6527 83 83 1.09% 1.27%
B 7586 6527 880 880 11.60% 13.48%
C 7586 6527 25 25 0.33% 0.38%
D 7586 6527 118 118 1.56% 1.81%

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 4 95 605547 3374.12 720 701 179.3
A 8 249 214566 1193.04 720 701 179.3
A 3 45 185074 1028.52 720 701 179.3
B 5 172 2745534 19480.89 654 629 140.9
B 5 185 618185 4382.86 654 629 140.9
B 4 206 197890 1399.98 654 629 140.9
C 12 252 287207 1485.64 706 702 192.8
C 9 38 185096 956.16 706 702 192.8
C 13 3 119766 617.39 706 702 192.8
D 2 249 271850 1371.53 690 659 197.7
D 2 207 231077 1165.32 690 659 197.7
D 2 31 128986 649.0 690 659 197.7

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