ASTROSAT CZTI

Data Quality Report

Orbit 53658

Creation date: 2025-08-29T13:24:06.344310
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_022T05_9000006504_53658cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53658cztM0_level2_quad_clean.evt
Size (bytes)934,081,92072,118,080
Size890.8 MB 68.8 MB
Events in quadrant A15,532,93076,645
Events in quadrant B4,902,511687,093
Events in quadrant C9,067,626401,895
Events in quadrant D4,574,054567,553

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0505441
B0189591
C0314001
D0179871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6451589991.443187%
B64523575.533168%
C6452242837.631742%
D64523605.579665%

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 7580 6450 5280 5280 69.66% 81.86%
B 7581 6451 147 147 1.94% 2.28%
C 7581 6451 2311 2311 30.48% 35.82%
D 7581 6452 278 278 3.67% 4.31%

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 63 12505136 126729.22 394 383 98.7
A 3 78 543693 5506.17 394 383 98.7
A 14 254 222166 2247.66 394 383 98.7
B 5 172 886863 5693.06 722 694 155.7
B 7 0 737347 4732.51 722 694 155.7
B 5 185 215340 1378.96 722 694 155.7
C 1 241 5165524 31851.82 582 577 162.2
C 15 224 820253 5054.88 582 577 162.2
C 5 10 174573 1073.02 582 577 162.2
D 10 172 992851 4983.93 699 669 199.1
D 13 153 180451 903.08 699 669 199.1
D 10 118 166768 834.35 699 669 199.1

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