ASTROSAT CZTI

Data Quality Report

Orbit 41309

Creation date: 2024-06-27T22:27:19.491928
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/AS1A12_025T08_9000005644_41309cztM0_level2.fits modeM0/AS1A12_025T08_9000005644_41309cztM0_level2_quad_clean.evt
Size (bytes)642,470,400153,319,680
Size612.7 MB 146.2 MB
Events in quadrant A5,337,2521,057,052
Events in quadrant B4,555,9041,081,643
Events in quadrant C4,924,542993,263
Events in quadrant D8,216,249841,894

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218393
B0202522
C0209442
D0312602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9643450.466660%
B9643240.248885%
C96432062.136265%
D9643116312.060562%

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 12507 9645 26 26 0.21% 0.27%
B 12507 9645 12 12 0.10% 0.12%
C 12507 9645 195 195 1.56% 2.02%
D 12506 9644 1237 1237 9.89% 12.83%

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 782045 3593.52 1059 1037 217.3
A 12 189 277789 1273.37 1059 1037 217.3
A 2 79 85325 387.82 1059 1037 217.3
B 5 255 157622 768.03 1051 1022 203.9
B 0 245 106233 516.0 1051 1022 203.9
B 7 202 60665 292.51 1051 1022 203.9
C 0 10 552773 2331.43 1011 1016 236.7
C 15 214 397219 1674.14 1011 1016 236.7
C 9 54 25404 103.05 1011 1016 236.7
D 2 249 3321637 13876.65 979 952 239.3
D 5 222 453856 1892.62 979 952 239.3
D 13 249 272664 1135.44 979 952 239.3

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