ASTROSAT CZTI

Data Quality Report

Orbit 47697

Creation date: 2024-07-24T12:31:14.438718
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/AS1A13_082T01_9000006342_47697cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47697cztM0_level2_quad_clean.evt
Size (bytes)587,393,280126,360,000
Size560.2 MB 120.5 MB
Events in quadrant A8,410,388820,854
Events in quadrant B3,967,943859,146
Events in quadrant C3,642,074836,776
Events in quadrant D5,108,196757,602

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307164
B0172381
C0167111
D0206871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79334645.848985%
B79342162.722460%
C7934360.453743%
D79342102.646836%

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 7933 7933 12 12 0.15% 0.15%
B 7934 7934 11 11 0.14% 0.14%
C 7934 7934 3 3 0.04% 0.04%
D 7934 7934 156 156 1.97% 1.97%

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 4471475 23034.47 924 901 194.1
A 9 191 276571 1420.38 924 901 194.1
A 14 248 34281 171.99 924 901 194.1
B 0 200 144432 774.16 928 898 185.4
B 4 21 63119 335.59 928 898 185.4
B 0 246 24643 128.07 928 898 185.4
C 12 2 44545 201.49 913 914 216.5
C 14 254 23064 102.29 913 914 216.5
C 6 247 11250 47.73 913 914 216.5
D 12 2 490502 2105.45 915 883 232.5
D 2 165 321708 1379.6 915 883 232.5
D 8 176 238212 1020.56 915 883 232.5

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