ASTROSAT CZTI

Data Quality Report

Orbit 54543

Creation date: 2025-10-28T03:03:00.937729
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_127T09_9000006520_54543cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54543cztM0_level2_quad_clean.evt
Size (bytes)448,660,80093,965,760
Size427.9 MB 89.6 MB
Events in quadrant A3,297,842630,863
Events in quadrant B3,294,364672,926
Events in quadrant C5,242,598554,850
Events in quadrant D4,277,918542,396

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141881
B0141801
C0199761
D0173741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6370771.208791%
B6370871.365777%
C63705999.403454%
D63703836.012559%

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 7445 6371 30 30 0.40% 0.47%
B 7445 6370 23 23 0.31% 0.36%
C 7445 6371 479 479 6.43% 7.52%
D 7445 6371 311 311 4.18% 4.88%

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 11 3 178398 1000.91 714 698 177.5
A 3 14 151818 851.19 714 698 177.5
A 4 249 73890 412.26 714 698 177.5
B 5 172 132749 865.84 708 685 152.5
B 8 234 62500 405.27 708 685 152.5
B 0 213 55283 357.96 708 685 152.5
C 12 254 1184563 6485.19 666 659 182.6
C 12 252 499469 2732.38 666 659 182.6
C 13 3 321931 1759.86 666 659 182.6
D 1 3 1244976 6360.53 685 653 195.6
D 6 239 123501 627.95 685 653 195.6
D 3 12 64504 326.38 685 653 195.6

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