ASTROSAT CZTI

Data Quality Report

Orbit 54316

Creation date: 2025-10-12T20:48:54.733835
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_54316cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54316cztM0_level2_quad_clean.evt
Size (bytes)675,976,320100,984,320
Size644.7 MB 96.3 MB
Events in quadrant A3,689,808723,862
Events in quadrant B5,674,479678,994
Events in quadrant C4,703,463641,927
Events in quadrant D10,365,257484,504

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165052
B0224612
C0197282
D0360862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75921822.397260%
B7593106313.999737%
C75935347.032793%
D7593215228.341894%

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 7802 7593 42 42 0.54% 0.55%
B 7803 7594 803 803 10.29% 10.57%
C 7803 7594 378 378 4.84% 4.98%
D 7803 7594 1843 1843 23.62% 24.27%

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 15 174 140633 694.05 823 802 201.5
A 6 161 64774 317.52 823 802 201.5
A 3 14 56506 276.49 823 802 201.5
B 10 245 2468416 15766.44 729 703 156.5
B 5 172 84817 537.41 729 703 156.5
B 0 213 64977 410.65 729 703 156.5
C 12 2 1002785 4802.24 771 762 208.7
C 1 241 335945 1606.38 771 762 208.7
C 14 254 119358 568.38 771 762 208.7
D 8 176 6476023 32226.38 706 671 200.9
D 3 12 363794 1807.18 706 671 200.9
D 2 249 151431 750.3 706 671 200.9

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