ASTROSAT CZTI

Data Quality Report

Orbit 24899

Creation date: 2024-06-27T19:11:12.517113
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/AS1A08_003T13_9000003646_24899cztM0_level2.evt modeM0/AS1A08_003T13_9000003646_24899cztM0_level2_quad_clean.evt
Size (bytes)549,201,60082,284,480
Size523.8 MB 78.5 MB
Events in quadrant A3,718,147511,498
Events in quadrant B3,847,341516,936
Events in quadrant C4,066,976485,647
Events in quadrant D4,510,542475,019

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152862
B0155732
C0162762
D0178792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72161792.480599%
B72172213.062214%
C72172823.907441%
D72172613.616461%

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 9231 7218 0 0 0.00% 0.00%
B 9232 7219 3 3 0.03% 0.04%
C 9232 7219 35 35 0.38% 0.48%
D 9232 7219 144 144 1.56% 1.99%

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 13 254 10734 50.49 964 944 193.9
A 3 137 8955 41.32 964 944 193.9
A 0 226 8169 37.27 964 944 193.9
B 4 80 42186 225.38 954 929 183.1
B 12 111 23114 121.19 954 929 183.1
B 0 190 22462 117.63 954 929 183.1
C 2 16 261716 1237.21 902 910 210.8
C 14 238 143436 676.12 902 910 210.8
C 0 10 84933 398.59 902 910 210.8
D 1 52 641685 2844.49 918 891 225.3
D 8 195 284951 1260.94 918 891 225.3
D 7 238 113223 498.64 918 891 225.3

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