ASTROSAT CZTI

Data Quality Report

Orbit 03164

Creation date: 2024-06-27T14:25:25.785990
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/AS1G05_218T02_9000000434_03164cztM0_level2.evt modeM0/AS1G05_218T02_9000000434_03164cztM0_level2_quad_clean.evt
Size (bytes)431,556,48093,839,040
Size411.6 MB 89.5 MB
Events in quadrant A2,992,889595,786
Events in quadrant B3,183,976601,474
Events in quadrant C3,057,098593,632
Events in quadrant D3,370,349574,274

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139813
B0141512
C0140022
D0150732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6843190.277656%
B6843370.540699%
C6843300.438404%
D6843731.066784%

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 8373 6845 1 1 0.01% 0.01%
B 8373 6845 7 7 0.08% 0.10%
C 8373 6845 8 8 0.10% 0.12%
D 8373 6845 47 47 0.56% 0.69%

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 12 247 54295 343.32 755 738 156.0
A 8 15 18006 110.69 755 738 156.0
A 12 194 8297 48.46 755 738 156.0
B 5 70 67377 446.49 773 754 149.2
B 2 249 27588 179.83 773 754 149.2
B 0 219 26420 172.01 773 754 149.2
C 1 192 38243 214.73 745 748 174.6
C 1 16 36896 207.01 745 748 174.6
C 6 80 22702 125.73 745 748 174.6
D 5 233 130026 720.4 736 712 179.5
D 13 239 128691 712.96 736 712 179.5
D 13 223 109132 604.0 736 712 179.5

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