ASTROSAT CZTI

Data Quality Report

Orbit 01084

Creation date: 2024-06-27T14:07:13.123837
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/AS1P01_180T10_9000000204_01084cztM0_level2.evt modeM0/AS1P01_180T10_9000000204_01084cztM0_level2_quad_clean.evt
Size (bytes)568,952,64057,507,840
Size542.6 MB 54.8 MB
Events in quadrant A4,265,130382,184
Events in quadrant B4,398,357376,567
Events in quadrant C4,295,089361,039
Events in quadrant D4,027,005362,023

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152761
B0156551
C0153711
D0145531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3665340.927694%
B3665320.873124%
C3665290.791269%
D3665401.091405%

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 3679 3665 98 98 2.66% 2.67%
B 3679 3665 118 118 3.21% 3.22%
C 3679 3665 89 89 2.42% 2.43%
D 3679 3665 100 100 2.72% 2.73%

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 12 243 5276 15.75 1109 1114 264.3
A 11 79 4578 13.11 1109 1114 264.3
A 13 9 4056 11.13 1109 1114 264.3
B 5 249 27842 100.21 1134 1139 266.5
B 8 219 21693 77.13 1134 1139 266.5
B 4 187 16108 56.18 1134 1139 266.5
C 15 241 172789 595.18 1043 1082 288.5
C 3 79 20828 68.44 1043 1082 288.5
C 3 111 16603 53.8 1043 1082 288.5
D 2 216 88600 275.08 1033 1070 318.2
D 10 125 58546 180.63 1033 1070 318.2
D 13 13 7088 18.91 1033 1070 318.2

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