ASTROSAT CZTI

Data Quality Report

Orbit 50731

Creation date: 2025-02-13T11:06:11.818239
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/AS1C07_001T01_9000006450_50731cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50731cztM0_level2_quad_clean.evt
Size (bytes)704,226,240104,503,680
Size671.6 MB 99.7 MB
Events in quadrant A4,847,397712,153
Events in quadrant B3,881,374784,562
Events in quadrant C10,498,228516,246
Events in quadrant D6,235,937607,880

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198900
B0172370
C0366670
D0241310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78101401.792574%
B7810640.819462%
C7810229929.436620%
D78105877.516005%

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 7810 7810 119 119 1.52% 1.52%
B 7810 7810 35 35 0.45% 0.45%
C 7809 7809 1952 1952 25.00% 25.00%
D 7810 7810 537 537 6.88% 6.88%

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 80 823432 4135.27 807 786 198.9
A 5 240 131961 659.39 807 786 198.9
A 0 31 123289 615.8 807 786 198.9
B 8 128 146614 835.81 812 782 174.5
B 0 213 96651 549.46 812 782 174.5
B 10 247 83920 476.49 812 782 174.5
C 15 179 4220659 22512.38 686 685 187.5
C 5 10 1338024 7134.33 686 685 187.5
C 15 174 513667 2736.62 686 685 187.5
D 1 47 935303 4461.72 753 727 209.5
D 15 108 441740 2105.42 753 727 209.5
D 15 93 420048 2001.86 753 727 209.5

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