ASTROSAT CZTI

Data Quality Report

Orbit 10439

Creation date: 2024-06-27T15:59:17.245831
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/AS1A03_126T01_9000001512_10439cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10439cztM0_level2_quad_clean.evt
Size (bytes)655,372,80085,726,080
Size625.0 MB 81.8 MB
Events in quadrant A6,612,319519,006
Events in quadrant B4,251,699537,856
Events in quadrant C3,326,835535,883
Events in quadrant D5,169,786501,051

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02498191
B01732241
C01488233
D02027635

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71983234.487358%
B72113224.465400%
C72101301.803051%
D72152623.631324%

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 7626 7223 32 32 0.42% 0.44%
B 7626 7225 106 106 1.39% 1.47%
C 7626 7226 2 2 0.03% 0.03%
D 7626 7226 99 99 1.30% 1.37%

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 13 251 3113036 17928.23 849 829 173.6
A 3 80 154721 886.51 849 829 173.6
A 8 5 45572 257.74 849 829 173.6
B 4 239 728508 4457.95 848 827 163.2
B 11 51 85215 516.98 848 827 163.2
B 0 214 42744 256.79 848 827 163.2
C 14 234 20424 100.24 841 843 195.3
C 8 128 12716 60.78 841 843 195.3
C 8 112 6435 28.63 841 843 195.3
D 1 20 768620 3810.37 833 807 201.5
D 8 195 443052 2194.7 833 807 201.5
D 5 222 287088 1420.71 833 807 201.5

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