ASTROSAT CZTI

Data Quality Report

Orbit 06655

Creation date: 2024-06-27T15:09:55.372626
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/AS1A02_103T01_9000000904_06655cztM0_level2.evt modeM0/AS1A02_103T01_9000000904_06655cztM0_level2_quad_clean.evt
Size (bytes)550,687,68081,786,240
Size525.2 MB 78.0 MB
Events in quadrant A3,366,005508,670
Events in quadrant B3,429,859518,005
Events in quadrant C3,332,565510,156
Events in quadrant D6,086,881464,411

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146093
B0147872
C0144342
D0229382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6827801.171818%
B6827650.952102%
C6827610.893511%
D68276609.667497%

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 8972 6829 5 5 0.06% 0.07%
B 8972 6829 2 2 0.02% 0.03%
C 8972 6829 5 5 0.06% 0.07%
D 8972 6829 520 520 5.80% 7.61%

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 15 90211 521.69 835 817 171.4
A 15 239 30816 175.07 835 817 171.4
A 14 111 11884 64.59 835 817 171.4
B 4 81 24902 148.12 844 824 162.6
B 4 48 20775 122.73 844 824 162.6
B 0 214 19381 114.16 844 824 162.6
C 9 247 114072 594.38 817 823 190.5
C 4 254 26232 133.36 817 823 190.5
C 1 16 6865 31.71 817 823 190.5
D 2 33 1758460 8991.53 789 765 195.5
D 12 221 520619 2659.33 789 765 195.5
D 8 195 373184 1905.12 789 765 195.5

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