ASTROSAT CZTI

Data Quality Report

Orbit 18080

Creation date: 2024-06-27T17:44:48.386854
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/AS1A06_006T01_9000002684_18080cztM0_level2.evt modeM0/AS1A06_006T01_9000002684_18080cztM0_level2_quad_clean.evt
Size (bytes)553,322,88084,847,680
Size527.7 MB 80.9 MB
Events in quadrant A3,078,296567,201
Events in quadrant B3,102,728561,847
Events in quadrant C2,946,972537,565
Events in quadrant D7,225,107485,533

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130331
B0128521
C0126051
D0255601

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59661161.944351%
B59671111.860231%
C59671141.910508%
D596693215.621857%

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 7076 5967 14 14 0.20% 0.23%
B 7077 5968 6 6 0.08% 0.10%
C 7077 5968 0 0 0.00% 0.00%
D 7076 5967 971 971 13.72% 16.27%

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 4 2 152985 1002.62 751 736 151.9
A 14 4 33163 213.54 751 736 151.9
A 0 226 6676 39.12 751 736 151.9
B 7 220 35031 240.54 748 729 142.6
B 0 244 34780 238.78 748 729 142.6
B 0 189 31654 216.86 748 729 142.6
C 14 238 111066 674.75 705 711 163.5
C 3 233 63226 382.24 705 711 163.5
C 0 207 12647 72.98 705 711 163.5
D 5 222 2300480 13665.86 695 677 168.3
D 11 176 1738133 10324.29 695 677 168.3
D 7 38 287714 1705.63 695 677 168.3

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