ASTROSAT CZTI

Data Quality Report

Orbit 48220

Creation date: 2024-08-28T07:12:48.383761
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/AS1C09_004T05_9000006416_48220cztM0_level2.fits modeM0/AS1C09_004T05_9000006416_48220cztM0_level2_quad_clean.evt
Size (bytes)653,181,120131,601,600
Size622.9 MB 125.5 MB
Events in quadrant A9,861,779863,832
Events in quadrant B4,718,969887,944
Events in quadrant C3,617,993861,094
Events in quadrant D5,338,890795,728

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348530
B0198370
C0170540
D0215540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82817458.996498%
B82811451.750996%
C8281170.205289%
D82811421.714769%

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 8281 8281 530 530 6.40% 6.40%
B 8281 8281 62 62 0.75% 0.75%
C 8281 8281 3 3 0.04% 0.04%
D 8281 8281 101 101 1.22% 1.22%

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 5029115 27060.6 881 862 185.8
A 14 235 1194101 6421.67 881 862 185.8
A 3 14 97611 520.67 881 862 185.8
B 4 21 569087 3205.63 900 871 177.3
B 0 200 230704 1296.62 900 871 177.3
B 5 255 154977 869.4 900 871 177.3
C 12 2 52160 242.08 894 896 211.8
C 14 254 46825 216.89 894 896 211.8
C 12 249 12439 54.51 894 896 211.8
D 2 165 1001854 4471.29 891 863 223.9
D 4 222 670522 2991.28 891 863 223.9
D 2 249 67778 298.9 891 863 223.9

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