ASTROSAT CZTI

Data Quality Report

Orbit 51543

Creation date: 2025-04-09T05:12:55.571168
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/AS1A13_090T01_9000006458_51543cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51543cztM0_level2_quad_clean.evt
Size (bytes)976,279,68088,701,120
Size931.1 MB 84.6 MB
Events in quadrant A7,004,206629,119
Events in quadrant B10,856,002536,919
Events in quadrant C3,927,683674,482
Events in quadrant D13,764,836317,636

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261340
B0374560
C0171481
D0461400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7577103913.712551%
B7577257633.997624%
C75761461.927138%
D7576403253.220697%

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 7577 7577 717 717 9.46% 9.46%
B 7577 7577 2161 2161 28.52% 28.52%
C 7576 7576 133 133 1.76% 1.76%
D 7576 7576 3874 3874 51.14% 51.14%

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 12 250 2538530 13311.45 777 759 190.6
A 12 80 354083 1853.3 777 759 190.6
A 12 17 287507 1504.09 777 759 190.6
B 10 44 7082737 47524.62 688 664 149.0
B 15 52 477933 3202.74 688 664 149.0
B 0 171 79766 530.82 688 664 149.0
C 13 3 406817 1878.87 784 776 216.1
C 0 129 114344 525.51 784 776 216.1
C 10 19 68128 311.66 784 776 216.1
D 8 176 11002096 77072.97 509 491 142.7
D 12 6 209093 1461.38 509 491 142.7
D 2 249 99966 696.88 509 491 142.7

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