ASTROSAT CZTI

Data Quality Report

Orbit 11090

Creation date: 2024-06-27T16:08:10.485951
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/AS1G08_071T02_9000001620_11090cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11090cztM0_level2_quad_clean.evt
Size (bytes)649,091,52085,256,640
Size619.0 MB 81.3 MB
Events in quadrant A3,836,512527,331
Events in quadrant B5,350,894520,894
Events in quadrant C3,661,757525,296
Events in quadrant D6,291,199476,533

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162560
B0208430
C0160970
D0239350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76332683.511070%
B76336178.083322%
C76331902.489192%
D763376710.048474%

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 9178 7634 0 0 0.00% 0.00%
B 9178 7635 186 186 2.03% 2.44%
C 9178 7636 1 1 0.01% 0.01%
D 9178 7635 486 486 5.30% 6.37%

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 54331 270.49 957 934 197.4
A 15 174 48336 240.13 957 934 197.4
A 11 29 13580 64.06 957 934 197.4
B 4 239 1452220 7876.73 946 922 184.3
B 10 16 108731 585.12 946 922 184.3
B 15 204 34577 182.66 946 922 184.3
C 9 204 22623 98.59 933 937 220.0
C 13 61 6923 27.21 933 937 220.0
C 14 234 2584 7.49 933 937 220.0
D 10 157 1215877 5586.35 891 864 217.5
D 10 253 1140011 5237.54 891 864 217.5
D 14 34 269295 1234.18 891 864 217.5

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