ASTROSAT CZTI

Data Quality Report

Orbit 40046

Creation date: 2024-06-27T22:11:40.209220
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_054T03_9000005516_40046cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40046cztM0_level2_quad_clean.evt
Size (bytes)394,053,12095,472,000
Size375.8 MB 91.0 MB
Events in quadrant A3,421,550634,796
Events in quadrant B2,951,439658,688
Events in quadrant C3,725,743625,366
Events in quadrant D4,024,139555,669

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137813
B0127222
C0148982
D0160962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5962741.241194%
B5962500.838645%
C5962611.023147%
D59623115.216370%

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 7275 5963 40 40 0.55% 0.67%
B 7275 5963 24 24 0.33% 0.40%
C 7275 5963 61 61 0.84% 1.02%
D 7275 5963 247 247 3.40% 4.14%

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 10 83 510856 3798.72 649 635 134.3
A 13 248 302452 2247.1 649 635 134.3
A 2 79 42510 311.77 649 635 134.3
B 4 171 263895 2092.7 647 629 125.8
B 0 230 55884 439.22 647 629 125.8
B 12 0 31863 248.28 647 629 125.8
C 9 187 842629 5652.64 635 639 149.0
C 15 214 247489 1657.21 635 639 149.0
C 14 254 85848 572.04 635 639 149.0
D 13 249 486413 3180.21 620 602 152.8
D 12 227 342110 2235.58 620 602 152.8
D 12 233 290159 1895.49 620 602 152.8

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