ASTROSAT CZTI

Data Quality Report

Orbit 25518

Creation date: 2024-06-27T19:18:33.872071
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/AS1A07_147T01_9000003722_25518cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25518cztM0_level2_quad_clean.evt
Size (bytes)496,690,56068,028,480
Size473.7 MB 64.9 MB
Events in quadrant A3,570,905415,956
Events in quadrant B3,764,457421,481
Events in quadrant C3,515,569388,913
Events in quadrant D3,750,859380,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143470
B0151370
C0142320
D0151620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6501430.661437%
B6501550.846024%
C6501751.153669%
D6501570.876788%

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 7821 6502 0 0 0.00% 0.00%
B 7821 6502 2 2 0.03% 0.03%
C 7821 6502 0 0 0.00% 0.00%
D 7821 6502 28 28 0.36% 0.43%

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 13 254 9486 47.0 925 912 182.4
A 0 226 8031 39.03 925 912 182.4
A 3 137 7659 36.99 925 912 182.4
B 15 33 87295 508.24 921 903 170.0
B 5 235 73369 426.31 921 903 170.0
B 12 111 20229 113.69 921 903 170.0
C 14 238 142062 710.87 861 873 198.6
C 0 10 10134 46.63 861 873 198.6
C 13 61 5921 25.42 861 873 198.6
D 1 52 283705 1353.68 867 844 209.0
D 8 195 88227 418.19 867 844 209.0
D 12 233 64530 304.78 867 844 209.0

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