ASTROSAT CZTI

Data Quality Report

Orbit 56089

Creation date: 2026-02-10T00:23:19.351152
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_9000006548_56089cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56089cztM0_level2_quad_clean.evt
Size (bytes)615,170,880100,532,160
Size586.7 MB 95.9 MB
Events in quadrant A5,350,600651,489
Events in quadrant B3,967,932721,975
Events in quadrant C6,247,340586,603
Events in quadrant D6,633,185569,553

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211661
B0168941
C0237431
D0249431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73834836.542056%
B73841972.667931%
C738483911.362405%
D73846238.437161%

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 7493 7385 344 344 4.59% 4.66%
B 7494 7386 66 66 0.88% 0.89%
C 7494 7386 653 653 8.71% 8.84%
D 7494 7386 595 595 7.94% 8.06%

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 15 32 1331404 7125.87 749 732 186.7
A 0 8 406606 2173.49 749 732 186.7
A 8 9 348567 1862.69 749 732 186.7
B 9 254 177606 1092.14 761 734 161.9
B 10 247 166424 1023.1 761 734 161.9
B 5 172 158993 977.21 761 734 161.9
C 12 254 1286092 6600.26 707 700 194.7
C 12 249 1140474 5852.54 707 700 194.7
C 9 38 362102 1855.74 707 700 194.7
D 2 62 1698081 8415.76 713 682 201.7
D 2 31 635675 3148.31 713 682 201.7
D 2 120 439962 2177.96 713 682 201.7

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