ASTROSAT CZTI

Data Quality Report

Orbit 56887

Creation date: 2026-04-03T20:35:34.841644
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_56887cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56887cztM0_level2_quad_clean.evt
Size (bytes)469,241,28096,033,600
Size447.5 MB 91.6 MB
Events in quadrant A3,410,016641,149
Events in quadrant B4,026,189661,664
Events in quadrant C3,138,782615,840
Events in quadrant D6,264,017513,219

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152361
B0170021
C0146481
D0234411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68231071.568225%
B68243475.084994%
C6824410.600821%
D682492313.525791%

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 7558 6824 32 32 0.42% 0.47%
B 7559 6825 133 133 1.76% 1.95%
C 7559 6825 18 18 0.24% 0.26%
D 7559 6825 861 861 11.39% 12.62%

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 4 253 226485 1276.5 714 694 176.9
A 10 251 204928 1154.63 714 694 176.9
A 3 14 147454 829.7 714 694 176.9
B 10 16 413410 2850.14 680 656 144.8
B 5 185 341994 2357.0 680 656 144.8
B 8 128 167240 1150.29 680 656 144.8
C 3 248 113539 602.48 688 681 187.3
C 13 3 108543 575.81 688 681 187.3
C 14 254 51841 273.11 688 681 187.3
D 8 160 1359086 7345.1 653 624 184.9
D 2 249 1339443 7238.89 653 624 184.9
D 8 240 552794 2985.54 653 624 184.9

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