ASTROSAT CZTI

Data Quality Report

Orbit 56571

Creation date: 2026-03-13T14:37:46.355018
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_083T06_9000006558_56571cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56571cztM0_level2_quad_clean.evt
Size (bytes)505,831,680101,652,480
Size482.4 MB 96.9 MB
Events in quadrant A5,877,036613,330
Events in quadrant B4,134,964723,841
Events in quadrant C3,981,307633,506
Events in quadrant D4,162,682598,289

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225840
B0173190
C0172850
D0175920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A730987011.903133%
B73092383.256259%
C73092673.653031%
D73102022.763338%

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 7309 7309 714 714 9.77% 9.77%
B 7309 7309 133 133 1.82% 1.82%
C 7309 7309 226 226 3.09% 3.09%
D 7310 7310 155 155 2.12% 2.12%

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 4 249 1720013 9249.56 749 731 185.9
A 15 33 636364 3419.64 749 731 185.9
A 15 48 217224 1164.71 749 731 185.9
B 4 206 611281 3684.87 770 741 165.7
B 4 169 152247 914.4 770 741 165.7
B 4 171 116115 696.33 770 741 165.7
C 15 230 702090 3446.99 757 751 203.5
C 12 252 91343 445.25 757 751 203.5
C 12 249 87402 425.88 757 751 203.5
D 6 239 396694 1858.23 756 723 213.1
D 2 249 246026 1151.17 756 723 213.1
D 3 12 159008 742.81 756 723 213.1

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