ASTROSAT CZTI

Data Quality Report

Orbit 18121

Creation date: 2024-06-27T17:45:13.246577
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/AS1A05_019T01_9000002688_18121cztM0_level2.evt modeM0/AS1A05_019T01_9000002688_18121cztM0_level2_quad_clean.evt
Size (bytes)506,580,480101,787,840
Size483.1 MB 97.1 MB
Events in quadrant A3,746,502685,856
Events in quadrant B3,680,598692,092
Events in quadrant C3,386,729636,126
Events in quadrant D4,103,564631,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151812
B0148722
C0139242
D0160742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62611582.523559%
B62611412.252036%
C62611201.916627%
D62612213.529788%

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 7546 6262 20 20 0.27% 0.32%
B 7546 6261 27 27 0.36% 0.43%
C 7546 6262 2 2 0.03% 0.03%
D 7546 6262 124 124 1.64% 1.98%

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 333644 1896.72 884 868 175.4
A 15 174 15818 85.21 884 868 175.4
A 0 226 7686 38.86 884 868 175.4
B 5 172 102289 619.94 874 855 163.6
B 4 171 47631 285.89 874 855 163.6
B 6 36 31133 185.05 874 855 163.6
C 14 238 130793 685.74 817 822 189.5
C 3 233 30098 154.46 817 822 189.5
C 9 160 20023 101.31 817 822 189.5
D 7 238 517927 2549.96 841 819 202.8
D 11 176 237339 1166.32 841 819 202.8
D 13 104 62700 305.15 841 819 202.8

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