ASTROSAT CZTI

Data Quality Report

Orbit 54906

Creation date: 2025-11-21T12:44:40.026938
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_039T06_9000006526_54906cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54906cztM0_level2_quad_clean.evt
Size (bytes)529,551,36098,110,080
Size505.0 MB 93.6 MB
Events in quadrant A4,886,427649,638
Events in quadrant B3,120,412700,627
Events in quadrant C6,879,797560,831
Events in quadrant D4,180,943579,466

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194612
B0145542
C0252182
D0174432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68881692.453542%
B68891041.509653%
C688994513.717521%
D68892193.178981%

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 8809 6890 135 135 1.53% 1.96%
B 8810 6891 9 9 0.10% 0.13%
C 8810 6891 822 822 9.33% 11.93%
D 8810 6891 194 194 2.20% 2.82%

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 3 14 1784474 9885.3 728 711 180.4
A 13 248 158992 877.17 728 711 180.4
A 0 8 54884 300.22 728 711 180.4
B 5 185 109423 689.49 722 692 157.7
B 10 247 59555 373.27 722 692 157.7
B 5 236 47970 299.8 722 692 157.7
C 9 38 2476426 13361.62 676 670 185.3
C 4 5 1146434 6183.67 676 670 185.3
C 12 252 139423 748.85 676 670 185.3
D 10 181 563018 2823.98 699 668 199.1
D 11 129 309234 1549.54 699 668 199.1
D 6 239 246218 1233.09 699 668 199.1

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