ASTROSAT CZTI

Data Quality Report

Orbit 28930

Creation date: 2024-06-27T19:58:04.246639
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/AS1A10_048T07_9000004148_28930cztM0_level2.evt modeM0/AS1A10_048T07_9000004148_28930cztM0_level2_quad_clean.evt
Size (bytes)617,083,20083,390,400
Size588.5 MB 79.5 MB
Events in quadrant A3,426,509519,108
Events in quadrant B3,558,233527,977
Events in quadrant C5,308,698500,783
Events in quadrant D5,921,451489,948

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146222
B0150532
C0208392
D0224532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6995851.215154%
B69961131.615209%
C69963785.403087%
D69966108.719268%

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 8670 6998 0 0 0.00% 0.00%
B 8672 7000 3 3 0.03% 0.04%
C 8672 7000 30 30 0.35% 0.43%
D 8672 7000 454 454 5.24% 6.49%

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 12273 63.43 886 865 179.8
A 3 137 8849 44.39 886 865 179.8
A 0 226 7401 36.34 886 865 179.8
B 15 33 64419 373.58 879 857 170.1
B 15 35 22077 124.72 879 857 170.1
B 12 111 21181 119.45 879 857 170.1
C 3 233 1840094 9173.3 844 849 200.5
C 14 238 141987 703.93 844 849 200.5
C 2 114 16775 79.43 844 849 200.5
D 8 195 2139866 10563.66 842 820 202.5
D 1 52 457162 2253.64 842 820 202.5
D 12 79 104559 512.31 842 820 202.5

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