ASTROSAT CZTI

Data Quality Report

Orbit 20220324_T05_015T01_9000005026_level2

Creation date: 2022-03-30T15:22:03.098450
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/AS1T05_015T01_9000005026cztM0_level2_bc.evt modeM0/AS1T05_015T01_9000005026cztM0_level2_quad_clean.evt
Size (bytes)8,647,709,7601,892,808,000
Size8.1 GB 1.8 GB
Events in quadrant A46,670,62011,910,649
Events in quadrant B48,178,11212,229,665
Events in quadrant C43,752,60412,153,149
Events in quadrant D113,486,58311,120,064

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029580
B029580
C029580
D029580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06000
B06000
C06000
D06030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03587760
B03655610
C03294000
D05724160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14475661494.247838%
B14475655553.837492%
C14475621141.460389%
D144755124058.569652%

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 303444 144757 329 329 0.11% 0.23%
B 303444 144759 453 453 0.15% 0.31%
C 303444 144758 805 805 0.27% 0.56%
D 303444 144757 1675 1675 0.55% 1.16%

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 15 169 14093098 8373.38 7734 7636 1682.2
A 10 83 1607679 951.18 7734 7636 1682.2
A 13 6 294182 170.34 7734 7636 1682.2
B 5 172 11311307 7470.12 7826 7679 1513.2
B 0 190 2204676 1451.91 7826 7679 1513.2
B 0 189 1641406 1079.67 7826 7679 1513.2
C 15 214 5687642 3273.82 7711 7688 1735.0
C 0 10 3217290 1849.96 7711 7688 1735.0
C 14 128 1636290 938.7 7711 7688 1735.0
D 8 195 63432761 35638.85 7539 7322 1779.7
D 2 250 5612533 3149.58 7539 7322 1779.7
D 13 249 3582286 2008.78 7539 7322 1779.7

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