ASTROSAT CZTI

Data Quality Report

Orbit 12398

Creation date: 2024-06-27T16:26:40.451934
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/AS1A04_104T02_9000001838_12398cztM0_level2.evt modeM0/AS1A04_104T02_9000001838_12398cztM0_level2_quad_clean.evt
Size (bytes)694,814,400119,131,200
Size662.6 MB 113.6 MB
Events in quadrant A4,632,803820,249
Events in quadrant B3,565,264845,952
Events in quadrant C2,999,182816,899
Events in quadrant D9,378,033642,907

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185341
B0151421
C0139171
D0324491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69052483.591600%
B6905610.883418%
C6905180.260681%
D6905218531.643736%

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 7406 6907 135 135 1.82% 1.95%
B 7406 6906 19 19 0.26% 0.28%
C 7406 6906 0 0 0.00% 0.00%
D 7406 6906 2179 2179 29.42% 31.55%

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 13 251 427062 2643.01 788 772 161.3
A 14 237 369737 2287.59 788 772 161.3
A 1 162 261201 1614.67 788 772 161.3
B 4 239 246869 1634.53 799 780 150.6
B 0 219 58804 385.4 799 780 150.6
B 0 197 43126 281.26 799 780 150.6
C 13 61 5699 27.47 769 771 179.4
C 3 202 1954 6.6 769 771 179.4
C -1 -1 -1 -1.0 769 771 179.4
D 1 52 5863939 36628.87 660 639 160.1
D 10 157 491485 3066.39 660 639 160.1
D 10 199 324131 2020.9 660 639 160.1

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