ASTROSAT CZTI

Data Quality Report

Orbit 56934

Creation date: 2026-04-07T00:52:35.050834
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_083T14_9000006564_56934cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56934cztM0_level2_quad_clean.evt
Size (bytes)968,325,12082,172,160
Size923.5 MB 78.4 MB
Events in quadrant A5,065,320648,444
Events in quadrant B6,989,905629,845
Events in quadrant C5,181,850605,247
Events in quadrant D18,032,95288,475

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203210
B0261880
C0210800
D0586622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74085136.924946%
B7408121716.428186%
C74096538.813605%
D7408655088.417927%

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 7408 7408 449 449 6.06% 6.06%
B 7408 7408 1007 1007 13.59% 13.59%
C 7409 7409 570 570 7.69% 7.69%
D 7407 7407 6454 6454 87.13% 87.13%

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 64 1158558 6276.69 748 729 184.5
A 8 206 715265 3873.56 748 729 184.5
A 13 248 68891 369.51 748 729 184.5
B 5 172 2769400 18167.61 709 684 152.4
B 5 185 1132890 7429.25 709 684 152.4
B 0 245 51768 335.2 709 684 152.4
C 12 249 1181584 6047.52 705 699 195.3
C 13 3 942519 4823.22 705 699 195.3
C 14 254 63299 320.59 705 699 195.3
D 12 33 15507478 133757.08 404 386 115.9
D 2 249 231477 1993.29 404 386 115.9
D 8 240 161932 1393.42 404 386 115.9

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