ASTROSAT CZTI

Data Quality Report

Orbit 07443

Creation date: 2024-06-27T15:19:50.230161
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_108T01_9000001024_07443cztM0_level2.evt modeM0/AS1A02_108T01_9000001024_07443cztM0_level2_quad_clean.evt
Size (bytes)504,774,720100,483,200
Size481.4 MB 95.8 MB
Events in quadrant A3,394,398635,016
Events in quadrant B3,496,960649,274
Events in quadrant C4,136,237628,814
Events in quadrant D3,745,256603,201

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154834
B0156213
C0172803
D0166623

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7569230.303871%
B7569570.753072%
C7569190.251024%
D7569720.951249%

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 8079 7571 0 0 0.00% 0.00%
B 8079 7571 0 0 0.00% 0.00%
C 8079 7571 0 0 0.00% 0.00%
D 8079 7571 45 45 0.56% 0.59%

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 15 239 14934 79.01 875 857 178.2
A 0 226 8251 41.5 875 857 178.2
A 12 194 7596 37.82 875 857 178.2
B 0 214 39368 226.23 887 865 170.2
B 12 111 17770 99.33 887 865 170.2
B 11 111 14232 78.54 887 865 170.2
C 9 68 777891 3903.69 855 860 199.1
C 13 61 6362 27.64 855 860 199.1
C 8 128 6131 26.48 855 860 199.1
D 2 14 187391 898.77 845 818 207.6
D 1 52 147256 705.43 845 818 207.6
D 13 105 108148 517.04 845 818 207.6

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