ASTROSAT CZTI

Data Quality Report

Orbit 50868

Creation date: 2025-02-22T16:00:34.391791
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/AS1C07_001T01_9000006450_50868cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50868cztM0_level2_quad_clean.evt
Size (bytes)530,208,00082,419,840
Size505.6 MB 78.6 MB
Events in quadrant A4,990,420549,423
Events in quadrant B6,182,065507,981
Events in quadrant C4,207,568521,613
Events in quadrant D3,783,921500,369

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190671
B0224671
C0165246
D0153051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59593075.151871%
B5960129921.795302%
C59593676.158751%
D59591983.322705%

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 6969 5959 227 227 3.26% 3.81%
B 6970 5960 967 967 13.87% 16.22%
C 6969 5959 290 290 4.16% 4.87%
D 6969 5959 141 141 2.02% 2.37%

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 4 968638 6230.86 624 609 155.4
A 8 234 451694 2903.47 624 609 155.4
A 4 191 152368 976.82 624 609 155.4
B 4 206 2753012 22622.83 576 557 121.7
B 4 170 783452 6434.73 576 557 121.7
B 8 128 65595 534.56 576 557 121.7
C 13 3 857799 5226.45 596 591 164.0
C 1 29 259592 1579.15 596 591 164.0
C 15 229 143286 870.02 596 591 164.0
D 2 249 354177 2114.78 604 581 167.2
D 15 108 159041 947.72 604 581 167.2
D 7 96 126636 753.91 604 581 167.2

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