ASTROSAT CZTI

Data Quality Report

Orbit 08916

Creation date: 2024-06-27T15:38:56.974673
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/AS1A03_092T01_9000001240_08916cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08916cztM0_level2_quad_clean.evt
Size (bytes)441,322,56098,233,920
Size420.9 MB 93.7 MB
Events in quadrant A3,506,413640,759
Events in quadrant B3,174,314649,857
Events in quadrant C3,003,019632,633
Events in quadrant D3,261,425619,929

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01282
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141843
B0131464
C0129322
D0135132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61851071.729992%
B6184711.148124%
C6185570.921584%
D6185621.002425%

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 8805 6185 20 20 0.23% 0.32%
B 8805 6186 0 0 0.00% 0.00%
C 8805 6186 0 0 0.00% 0.00%
D 8805 6186 7 7 0.08% 0.11%

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 8 5 370488 2297.6 799 784 160.9
A 15 174 27902 168.53 799 784 160.9
A 5 16 24849 149.56 799 784 160.9
B 0 214 42768 281.71 795 781 149.0
B 4 173 19750 127.27 795 781 149.0
B 12 111 15619 99.55 795 781 149.0
C 13 61 5749 28.36 769 774 175.4
C 12 4 4794 22.92 769 774 175.4
C 3 202 2037 7.2 769 774 175.4
D 1 52 101361 525.2 773 755 191.6
D 8 195 80201 414.74 773 755 191.6
D 7 71 53971 277.81 773 755 191.6

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