ASTROSAT CZTI

Data Quality Report

Orbit 41999

Creation date: 2024-06-27T22:35:33.458873
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/AS1T05_132T01_9000005730_41999cztM0_level2.fits modeM0/AS1T05_132T01_9000005730_41999cztM0_level2_quad_clean.evt
Size (bytes)395,861,76084,481,920
Size377.5 MB 80.6 MB
Events in quadrant A2,737,946571,132
Events in quadrant B2,466,412586,701
Events in quadrant C2,361,976560,068
Events in quadrant D6,686,024478,117

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111332
B0109412
C0103522
D0235383

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5163120.232423%
B5163260.503583%
C516330.058106%
D51624679.046881%

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 7047 5164 2 2 0.03% 0.04%
B 7047 5164 17 17 0.24% 0.33%
C 7047 5164 0 0 0.00% 0.00%
D 7046 5163 500 500 7.10% 9.68%

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 556600 4859.05 558 548 114.4
A 15 222 11084 92.07 558 548 114.4
A 13 6 7464 60.44 558 548 114.4
B 0 190 111518 1041.94 554 539 106.5
B 5 255 71401 665.3 554 539 106.5
B 0 186 35961 332.56 554 539 106.5
C 15 214 220162 1729.69 544 547 127.0
C 8 229 11256 84.34 544 547 127.0
C 3 233 4065 27.71 544 547 127.0
D 1 52 3508222 27119.91 524 509 129.3
D 13 249 687214 5309.27 524 509 129.3
D 2 249 229970 1774.08 524 509 129.3

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