ASTROSAT CZTI

Data Quality Report

Orbit 58111

Creation date: 2026-06-25T05:13:06.050471
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_042T02_9000006586_58111cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58111cztM0_level2_quad_clean.evt
Size (bytes)676,013,760106,395,840
Size644.7 MB 101.5 MB
Events in quadrant A3,445,258730,786
Events in quadrant B6,724,274706,630
Events in quadrant C3,617,455689,217
Events in quadrant D10,644,002562,022

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159170
B0252080
C0164000
D0368680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7653220.287469%
B765486011.235955%
C7654440.574863%
D7653139318.202012%

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 7653 7653 19 19 0.25% 0.25%
B 7654 7654 665 665 8.69% 8.69%
C 7654 7654 37 37 0.48% 0.48%
D 7653 7653 1743 1743 22.78% 22.78%

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 11 3 58789 281.57 829 809 205.9
A 3 61 54478 260.63 829 809 205.9
A 10 251 54259 259.57 829 809 205.9
B 10 128 2668616 15645.59 788 759 170.5
B 5 172 598523 3505.57 788 759 170.5
B 5 185 54318 314.1 788 759 170.5
C 12 252 281390 1281.05 799 791 219.0
C 12 112 49119 220.64 799 791 219.0
C 1 237 38665 172.91 799 791 219.0
D 12 110 7203675 33189.25 767 733 217.0
D 0 160 118338 541.89 767 733 217.0
D 8 160 65614 298.95 767 733 217.0

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