ASTROSAT CZTI

Data Quality Report

Orbit 54318

Creation date: 2025-10-13T00:31:02.008172
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_126T15_9000006516_54318cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54318cztM0_level2_quad_clean.evt
Size (bytes)1,091,473,92086,299,200
Size1.0 GB 82.3 MB
Events in quadrant A6,703,835636,577
Events in quadrant B6,066,229686,300
Events in quadrant C12,589,508396,329
Events in quadrant D14,444,994353,938

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255810
B0236410
C0426570
D0482790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7752115014.834881%
B775298012.641899%
C7751346944.755515%
D7752378148.774510%

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 7752 7752 822 822 10.60% 10.60%
B 7752 7752 810 810 10.45% 10.45%
C 7750 7750 3221 3221 41.56% 41.56%
D 7751 7751 3489 3489 45.01% 45.01%

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 7 29 2890653 15258.82 765 746 189.4
A 0 8 330807 1742.74 765 746 189.4
A 15 174 191901 1009.31 765 746 189.4
B 10 245 2766453 17142.26 749 721 161.3
B 0 213 151541 934.8 749 721 161.3
B 10 247 45563 277.93 749 721 161.3
C 12 2 6705694 41211.59 594 588 162.7
C 1 241 3190028 19603.26 594 588 162.7
C 14 254 166764 1021.37 594 588 162.7
D 8 176 6087266 37263.41 576 549 163.3
D 3 12 2778262 17005.4 576 549 163.3
D 15 108 2759699 16891.75 576 549 163.3

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