ASTROSAT CZTI

Data Quality Report

Orbit 39558

Creation date: 2024-06-27T22:06:07.601009
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/AS1A12_018T01_9000005488_39558cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39558cztM0_level2_quad_clean.evt
Size (bytes)568,978,56085,662,720
Size542.6 MB 81.7 MB
Events in quadrant A9,417,520437,458
Events in quadrant B2,420,866638,545
Events in quadrant C4,394,321588,998
Events in quadrant D4,401,764542,827

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318623
B0111232
C0167022
D0167382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5515210938.241160%
B551560.108794%
C55151632.955576%
D55152674.841342%

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 7218 5516 1874 1874 25.96% 33.97%
B 7218 5516 2 2 0.03% 0.04%
C 7218 5516 162 162 2.24% 2.94%
D 7218 5516 266 266 3.69% 4.82%

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 15 222 6820071 61425.33 544 533 111.0
A 10 83 415517 3737.87 544 533 111.0
A 13 248 29558 261.44 544 533 111.0
B 5 255 22280 189.0 598 581 114.8
B 12 111 14358 120.0 598 581 114.8
B 0 230 13388 111.55 598 581 114.8
C 9 187 1367499 10003.22 583 587 136.6
C 15 208 483377 3533.11 583 587 136.6
C 15 214 230230 1680.55 583 587 136.6
D 12 227 1039119 7295.01 582 565 142.4
D 1 52 815191 5722.1 582 565 142.4
D 12 0 152825 1069.5 582 565 142.4

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