ASTROSAT CZTI

Data Quality Report

Orbit 56120

Creation date: 2026-02-11T06:32:05.306762
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_56120cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56120cztM0_level2_quad_clean.evt
Size (bytes)590,247,360116,089,920
Size562.9 MB 110.7 MB
Events in quadrant A5,914,165734,606
Events in quadrant B5,076,319822,728
Events in quadrant C5,515,375697,002
Events in quadrant D4,697,239681,623

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237380
B0206890
C0222700
D0201720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83265636.761951%
B83261661.993755%
C83264515.416767%
D83271531.837396%

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 8326 8326 363 363 4.36% 4.36%
B 8326 8326 99 99 1.19% 1.19%
C 8326 8326 289 289 3.47% 3.47%
D 8327 8327 145 145 1.74% 1.74%

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 2251486 10541.08 855 833 213.5
A 0 8 136094 633.5 855 833 213.5
A 3 14 79897 370.3 855 833 213.5
B 9 254 569638 3071.99 873 843 185.2
B 4 156 331059 1783.46 873 843 185.2
B 4 190 252897 1361.31 873 843 185.2
C 12 252 758261 3360.78 830 823 225.4
C 15 148 730202 3236.28 830 823 225.4
C 12 254 352754 1561.53 830 823 225.4
D 2 249 621313 2642.66 838 802 234.8
D 8 240 383851 1631.35 838 802 234.8
D 2 120 174594 740.15 838 802 234.8

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