ASTROSAT CZTI

Data Quality Report

Orbit 49768

Creation date: 2024-12-12T12:14:50.146916
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/AS1A13_037T01_9000006440_49768cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49768cztM0_level2_quad_clean.evt
Size (bytes)1,183,996,80041,512,320
Size1.1 GB 39.6 MB
Events in quadrant A14,511,826128,948
Events in quadrant B4,452,976651,565
Events in quadrant C9,625,35728,496
Events in quadrant D14,752,60810,649

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04737918
B01742923
C03299228
D04813732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6266537785.812320%
B62634136.594284%
C6264602796.216475%
D6265618698.739026%

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 7348 6269 5610 5610 76.35% 89.49%
B 7348 6267 230 230 3.13% 3.67%
C 7348 6267 1621 1621 22.06% 25.87%
D 7349 6270 5255 5255 71.51% 83.81%

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 7335672 49154.44 531 514 149.2
A 7 64 2031840 13612.34 531 514 149.2
A 15 63 513428 3437.14 531 514 149.2
B 10 28 648946 4383.84 691 669 147.9
B 1 207 342514 2311.66 691 669 147.9
B 5 185 130946 880.97 691 669 147.9
C 15 180 2985538 83245.5 105 103 35.9
C 15 190 2353763 65629.17 105 103 35.9
C 15 163 1026219 28612.09 105 103 35.9
D 15 142 3668588 47539.62 218 207 77.2
D 7 61 3180457 41213.78 218 207 77.2
D 15 40 1032290 13375.06 218 207 77.2

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