ASTROSAT CZTI

Data Quality Report

Orbit 02530

Creation date: 2024-06-27T14:19:03.820020
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/AS1T01_103T01_9000000374_02530cztM0_level2.evt modeM0/AS1T01_103T01_9000000374_02530cztM0_level2_quad_clean.evt
Size (bytes)1,096,675,200204,068,160
Size1.0 GB 194.6 MB
Events in quadrant A7,159,9561,267,642
Events in quadrant B7,391,0361,280,002
Events in quadrant C7,366,2031,266,481
Events in quadrant D10,153,5151,203,411

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03420
B03420
C03420
D03420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341990
B0345760
C0344260
D0419580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A168631310.776849%
B168631871.108937%
C168631340.794639%
D168638234.880508%

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 17603 16865 1 1 0.01% 0.01%
B 17603 16865 47 47 0.27% 0.28%
C 17603 16865 3 3 0.02% 0.02%
D 17603 16865 638 638 3.62% 3.78%

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 12 194 20594 49.77 1858 1816 377.3
A 0 226 19406 46.62 1858 1816 377.3
A 15 236 10041 21.8 1858 1816 377.3
B 4 48 93050 254.62 1880 1831 358.3
B 12 111 29652 77.66 1880 1831 358.3
B 11 111 24540 63.39 1880 1831 358.3
C 2 53 99987 231.84 1816 1820 423.4
C 12 4 58927 134.87 1816 1820 423.4
C 8 112 32797 73.16 1816 1820 423.4
D 11 130 2322142 5564.68 1756 1708 417.0
D 11 131 723089 1729.96 1756 1708 417.0
D 7 67 258453 615.7 1756 1708 417.0

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