ASTROSAT CZTI

Data Quality Report

Orbit 27140

Creation date: 2024-06-27T19:36:55.900021
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/AS1T03_244T01_9000003912_27140cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27140cztM0_level2_quad_clean.evt
Size (bytes)546,246,720106,441,920
Size520.9 MB 101.5 MB
Events in quadrant A3,383,543728,213
Events in quadrant B3,519,766738,270
Events in quadrant C3,435,654696,940
Events in quadrant D5,782,628626,058

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139140
B0143800
C0140460
D0214170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6218741.190093%
B6219781.254221%
C62191462.347644%
D621999616.015437%

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 7563 6219 6 6 0.08% 0.10%
B 7564 6220 5 5 0.07% 0.08%
C 7564 6220 8 8 0.11% 0.13%
D 7564 6220 577 577 7.63% 9.28%

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 14 235 62047 364.35 855 839 168.0
A 13 254 10767 59.1 855 839 168.0
A 8 192 9655 52.48 855 839 168.0
B 3 112 91808 586.4 846 826 155.2
B 10 246 61012 387.91 846 826 155.2
B 10 245 21998 136.46 846 826 155.2
C 14 238 130838 683.04 819 825 190.3
C 2 16 79562 413.66 819 825 190.3
C 15 208 31696 162.19 819 825 190.3
D 1 52 2546362 13243.33 751 739 192.2
D 7 38 160145 829.29 751 739 192.2
D 2 250 157610 816.1 751 739 192.2

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