ASTROSAT CZTI

Data Quality Report

Orbit 27912

Creation date: 2024-06-27T19:45:54.307993
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/AS1A10_048T06_9000004030_27912cztM0_level2.evt modeM0/AS1A10_048T06_9000004030_27912cztM0_level2_quad_clean.evt
Size (bytes)691,344,000120,418,560
Size659.3 MB 114.8 MB
Events in quadrant A3,935,907804,592
Events in quadrant B4,470,604806,987
Events in quadrant C4,178,815762,995
Events in quadrant D7,793,043698,226

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171590
B0187300
C0176180
D0288000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8261660.798935%
B82611581.912601%
C82611732.094177%
D8261100212.129282%

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 8841 8263 1 1 0.01% 0.01%
B 8841 8263 7 7 0.08% 0.08%
C 8841 8262 0 0 0.00% 0.00%
D 8841 8263 752 752 8.51% 9.10%

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 13 254 14884 67.48 1016 994 205.8
A 8 192 11836 52.67 1016 994 205.8
A 3 137 10078 44.13 1016 994 205.8
B 0 230 244993 1240.41 1012 985 196.7
B 10 245 170246 860.44 1012 985 196.7
B 15 32 30197 148.5 1012 985 196.7
C 3 233 159039 703.73 961 965 224.6
C 14 238 153146 677.5 961 965 224.6
C 6 112 71864 315.64 961 965 224.6
D 1 52 2226801 10096.94 926 901 220.5
D 8 195 972209 4405.97 926 901 220.5
D 7 238 639269 2895.71 926 901 220.5

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