ASTROSAT CZTI

Data Quality Report

Orbit 18562

Creation date: 2024-06-27T17:51:37.288881
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/AS1A05_188T01_9000002756_18562cztM0_level2.evt modeM0/AS1A05_188T01_9000002756_18562cztM0_level2_quad_clean.evt
Size (bytes)548,547,84084,504,960
Size523.1 MB 80.6 MB
Events in quadrant A3,908,048517,135
Events in quadrant B3,670,121532,094
Events in quadrant C3,508,191504,002
Events in quadrant D5,015,341481,652

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167172
B0158802
C0154403
D0201312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75261662.205687%
B7526921.222429%
C7526801.062982%
D75263154.185490%

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 7936 7527 112 112 1.41% 1.49%
B 7936 7527 36 36 0.45% 0.48%
C 7936 7527 12 12 0.15% 0.16%
D 7936 7527 204 204 2.57% 2.71%

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 0 13 521830 2942.51 875 856 177.1
A 13 254 12256 64.39 875 856 177.1
A 0 226 7474 37.38 875 856 177.1
B 12 18 78682 455.15 889 866 171.0
B 7 220 55994 322.45 889 866 171.0
B 4 80 23148 130.33 889 866 171.0
C 14 238 132401 657.88 849 855 200.0
C 9 54 45201 221.78 849 855 200.0
C 8 128 11968 55.58 849 855 200.0
D 7 238 1309185 6340.06 844 817 206.4
D 1 52 442068 2138.2 844 817 206.4
D 7 38 50965 243.0 844 817 206.4

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