ASTROSAT CZTI

Data Quality Report

Orbit 46952

Creation date: 2024-06-27T23:29:50.384061
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_077T01_9000006286_46952cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46952cztM0_level2_quad_clean.evt
Size (bytes)603,377,28095,221,440
Size575.4 MB 90.8 MB
Events in quadrant A6,146,047669,867
Events in quadrant B8,612,912531,499
Events in quadrant C2,814,412665,849
Events in quadrant D4,299,328598,747

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228011
B0297031
C0125751
D0166451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59692554.272072%
B5969190631.931647%
C5970781.306533%
D59703275.477387%

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 7119 5970 28 28 0.39% 0.47%
B 7118 5968 1694 1694 23.80% 28.38%
C 7120 5970 19 19 0.27% 0.32%
D 7120 5971 255 255 3.58% 4.27%

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 3398015 23650.76 692 678 143.6
A 0 243 18356 123.07 692 678 143.6
A 15 235 18333 122.91 692 678 143.6
B 3 112 5830699 47042.3 629 610 123.9
B 5 32 59332 473.82 629 610 123.9
B 0 190 57795 461.42 629 610 123.9
C 14 254 108777 667.06 681 685 162.0
C 12 2 14719 86.61 681 685 162.0
C 1 3 11967 69.62 681 685 162.0
D 1 52 565983 3287.14 677 655 172.0
D 13 249 425415 2469.8 677 655 172.0
D 12 233 315807 1832.47 677 655 172.0

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