ASTROSAT CZTI

Data Quality Report

Orbit 24714

Creation date: 2024-06-27T19:09:05.312018
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_194T01_9000003620_24714cztM0_level2.evt modeM0/AS1T03_194T01_9000003620_24714cztM0_level2_quad_clean.evt
Size (bytes)556,600,320104,425,920
Size530.8 MB 99.6 MB
Events in quadrant A3,485,860678,248
Events in quadrant B3,762,076679,426
Events in quadrant C4,607,674646,922
Events in quadrant D4,496,002639,787

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153481
B0160201
C0185541
D0183132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7442290.389680%
B7443600.806127%
C74431512.028752%
D74421271.706531%

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 7822 7443 0 0 0.00% 0.00%
B 7823 7444 6 6 0.08% 0.08%
C 7823 7443 41 41 0.52% 0.55%
D 7822 7443 68 68 0.87% 0.91%

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 11481 58.51 902 882 181.2
A 3 137 8442 41.73 902 882 181.2
A 10 255 8378 41.38 902 882 181.2
B 0 230 106681 611.49 891 867 173.0
B 0 189 78553 448.94 891 867 173.0
B 3 64 66345 378.39 891 867 173.0
C 7 247 803018 3941.85 863 869 203.5
C 2 16 281233 1377.74 863 869 203.5
C 14 238 133176 650.17 863 869 203.5
D 1 52 1012122 4734.63 878 852 213.6
D 8 195 132288 615.37 878 852 213.6
D 2 234 28695 130.36 878 852 213.6

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