ASTROSAT CZTI

Data Quality Report

Orbit 31167

Creation date: 2024-06-27T20:24:35.046517
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/AS1C06_001T01_9000004508_31167cztM0_level2.evt modeM0/AS1C06_001T01_9000004508_31167cztM0_level2_quad_clean.evt
Size (bytes)571,521,60099,725,760
Size545.0 MB 95.1 MB
Events in quadrant A3,361,622658,327
Events in quadrant B5,253,762657,156
Events in quadrant C3,556,988631,242
Events in quadrant D4,694,532618,451

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139782
B0198522
C0144552
D0185972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6527741.133752%
B65271572.405393%
C65272203.370614%
D65271151.761912%

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 7567 6528 1 1 0.01% 0.02%
B 7567 6528 0 0 0.00% 0.00%
C 7567 6528 14 14 0.19% 0.21%
D 7567 6528 19 19 0.25% 0.29%

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 8 255 14608 80.57 863 848 170.8
A 13 254 11230 60.79 863 848 170.8
A 11 47 11016 59.54 863 848 170.8
B 6 159 1858017 11361.35 854 833 163.5
B 0 190 35542 212.33 854 833 163.5
B 12 111 19790 115.97 854 833 163.5
C 14 238 137713 704.66 831 839 194.2
C 0 10 130825 669.2 831 839 194.2
C 3 233 23027 114.23 831 839 194.2
D 8 195 1331133 5989.16 834 823 222.1
D 2 250 69539 309.36 834 823 222.1
D 12 79 67555 300.43 834 823 222.1

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