ASTROSAT CZTI

Data Quality Report

Orbit 02206

Creation date: 2024-06-27T14:15:15.256407
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/AS1T01_072T04_9000000342_02206cztM0_level2.evt modeM0/AS1T01_072T04_9000000342_02206cztM0_level2_quad_clean.evt
Size (bytes)837,201,60061,747,200
Size798.4 MB 58.9 MB
Events in quadrant A3,284,639450,939
Events in quadrant B3,398,215459,922
Events in quadrant C14,959,5964,607
Events in quadrant D3,208,360436,710

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151573
B0152573
C04885416
D0153353

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73981091.473371%
B73981171.581509%
C73967396100.000000%
D7398801.081373%

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 7888 7400 0 0 0.00% 0.00%
B 7888 7400 1 1 0.01% 0.01%
C 7888 7399 1845 1845 23.39% 24.94%
D 7888 7400 21 21 0.27% 0.28%

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 2 32448 183.44 837 816 172.4
A 15 171 16934 93.47 837 816 172.4
A 12 194 9526 50.51 837 816 172.4
B 4 158 44063 258.24 857 835 167.4
B 6 219 15959 90.35 857 835 167.4
B 12 111 11373 62.95 857 835 167.4
C 7 111 3346308 89724.96 54 49 37.3
C 8 112 2164782 58044.09 54 49 37.3
C 8 128 1714896 45981.07 54 49 37.3
D 7 223 63472 323.61 808 784 193.7
D 9 64 30784 154.87 808 784 193.7
D 10 149 30777 154.83 808 784 193.7

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