ASTROSAT CZTI

Data Quality Report

Orbit 09083

Creation date: 2024-06-27T15:40:56.116884
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/AS1A03_120T01_9000001266_09083cztM0_level2.evt modeM0/AS1A03_120T01_9000001266_09083cztM0_level2_quad_clean.evt
Size (bytes)874,405,440163,425,600
Size833.9 MB 155.9 MB
Events in quadrant A7,344,9801,020,885
Events in quadrant B6,372,0311,035,299
Events in quadrant C5,653,2241,024,703
Events in quadrant D6,249,685989,245

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030404213
B027745142
C026148143
D027651162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127041881.479849%
B127251481.163065%
C12719550.432424%
D127181461.147979%

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 14168 12787 46 46 0.32% 0.36%
B 14168 12789 42 42 0.30% 0.33%
C 14168 12786 5 5 0.04% 0.04%
D 14168 12786 86 86 0.61% 0.67%

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 5 1277459 4326.22 1456 1423 295.0
A 15 174 142411 478.0 1456 1423 295.0
A 1 162 128175 429.73 1456 1423 295.0
B 4 48 259549 928.33 1466 1434 278.0
B 4 80 96041 340.26 1466 1434 278.0
B 5 174 86302 305.23 1466 1434 278.0
C 14 234 59436 175.33 1430 1436 330.8
C 13 61 10604 27.71 1430 1436 330.8
C 8 128 7792 19.21 1430 1436 330.8
D 13 104 230006 653.04 1426 1383 350.1
D 8 195 150069 424.71 1426 1383 350.1
D 1 52 143131 404.89 1426 1383 350.1

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