ASTROSAT CZTI

Data Quality Report

Orbit 28695

Creation date: 2024-06-27T19:55:03.538995
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/AS1A10_021T04_9000004116_28695cztM0_level2.evt modeM0/AS1A10_021T04_9000004116_28695cztM0_level2_quad_clean.evt
Size (bytes)543,179,52088,600,320
Size518.0 MB 84.5 MB
Events in quadrant A3,491,469551,878
Events in quadrant B4,483,273554,614
Events in quadrant C3,620,700541,605
Events in quadrant D4,365,087532,609

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150061
B0179041
C0153101
D0179151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7209600.832293%
B72103615.006935%
C72101862.579750%
D72101151.595007%

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 7519 7209 2 2 0.03% 0.03%
B 7520 7210 122 122 1.62% 1.69%
C 7520 7210 5 5 0.07% 0.07%
D 7520 7210 33 33 0.44% 0.46%

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 15 174 92709 516.33 879 860 177.9
A 13 254 13850 73.02 879 860 177.9
A 3 137 8662 43.86 879 860 177.9
B 10 245 1061137 6402.71 862 839 165.6
B 12 111 20555 119.06 862 839 165.6
B 11 111 18856 108.8 862 839 165.6
C 14 238 169103 846.64 844 848 198.7
C 2 16 84768 422.28 844 848 198.7
C 14 254 48876 241.67 844 848 198.7
D 8 195 596972 2877.45 853 830 207.2
D 1 52 340690 1640.43 853 830 207.2
D 2 250 104116 498.54 853 830 207.2

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