ASTROSAT CZTI

Data Quality Report

Orbit 37179

Creation date: 2024-06-27T21:36:35.494097
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/AS1A11_079T01_9000005284_37179cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37179cztM0_level2_quad_clean.evt
Size (bytes)460,661,76073,512,000
Size439.3 MB 70.1 MB
Events in quadrant A3,110,097462,504
Events in quadrant B3,000,636463,902
Events in quadrant C3,046,839461,106
Events in quadrant D4,389,395422,573

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131463
B0129022
C0127872
D0173122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5954570.957340%
B5954631.058112%
C5954430.722204%
D59544307.222036%

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 7236 5955 49 49 0.68% 0.82%
B 7236 5955 47 47 0.65% 0.79%
C 7236 5955 40 40 0.55% 0.67%
D 7236 5955 345 345 4.77% 5.79%

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 274211 1990.68 673 660 137.4
A 9 143 167863 1216.76 673 660 137.4
A 15 237 34712 247.8 673 660 137.4
B 5 172 207620 1613.29 664 647 128.3
B 0 190 42335 324.94 664 647 128.3
B 4 81 22403 169.58 664 647 128.3
C 15 214 254352 1641.92 655 660 154.5
C 0 10 192989 1244.77 655 660 154.5
C 14 254 32358 205.15 655 660 154.5
D 10 253 1142515 7316.47 640 622 156.1
D 1 52 419477 2683.74 640 622 156.1
D 2 249 158301 1010.3 640 622 156.1

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