ASTROSAT CZTI

Data Quality Report

Orbit 56810

Creation date: 2026-03-29T15:49:24.479986
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_083T03_9000006562_56810cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56810cztM0_level2_quad_clean.evt
Size (bytes)467,294,40081,774,720
Size445.6 MB 78.0 MB
Events in quadrant A3,046,906570,644
Events in quadrant B8,129,857430,013
Events in quadrant C2,600,802549,704
Events in quadrant D3,064,737516,493

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126191
B0282201
C0122131
D0131311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5852791.349966%
B5852205935.184552%
C5853781.332650%
D5853831.418076%

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 6912 5853 11 11 0.16% 0.19%
B 6912 5853 1637 1637 23.68% 27.97%
C 6913 5854 24 24 0.35% 0.41%
D 6913 5854 32 32 0.46% 0.55%

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 14 431838 2708.32 641 624 159.2
A 10 251 88802 553.82 641 624 159.2
A 12 3 18776 114.01 641 624 159.2
B 4 206 2324799 20144.97 530 510 115.4
B 5 185 2185153 18934.63 530 510 115.4
B 8 128 675412 5849.48 530 510 115.4
C 14 96 119963 702.19 621 613 170.0
C 14 254 18837 107.22 621 613 170.0
C 12 252 15566 87.98 621 613 170.0
D 2 31 156286 882.47 623 595 176.4
D 2 249 128264 723.64 623 595 176.4
D 6 239 77349 435.05 623 595 176.4

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