ASTROSAT CZTI

Data Quality Report

Orbit 55466

Creation date: 2025-12-29T06:15:40.607661
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_099T01_9000006536_55466cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55466cztM0_level2_quad_clean.evt
Size (bytes)543,827,520108,264,960
Size518.6 MB 103.2 MB
Events in quadrant A4,329,159721,120
Events in quadrant B6,162,955688,511
Events in quadrant C3,770,658685,732
Events in quadrant D5,262,253640,593

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185290
B0237903
C0171230
D0211440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77951812.322001%
B7794105013.471901%
C77951261.616421%
D77953334.271969%

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 7795 7795 178 178 2.28% 2.28%
B 7795 7795 829 829 10.64% 10.64%
C 7795 7795 106 106 1.36% 1.36%
D 7795 7795 316 316 4.05% 4.05%

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 3 78 827735 4074.07 810 789 203.0
A 0 8 150544 737.79 810 789 203.0
A 3 14 85515 417.42 810 789 203.0
B 5 172 2810262 17681.95 749 723 158.9
B 7 252 127401 797.25 749 723 158.9
B 10 247 67419 419.75 749 723 158.9
C 13 3 330270 1506.36 794 787 218.7
C 15 147 99082 449.39 794 787 218.7
C 1 16 85216 386.0 794 787 218.7
D 15 107 585955 2678.36 784 751 218.5
D 8 160 574212 2624.62 784 751 218.5
D 2 249 294991 1346.68 784 751 218.5

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