ASTROSAT CZTI

Data Quality Report

Orbit 23762

Creation date: 2024-06-27T18:58:25.542740
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/AS1C05_007T01_9000003518_23762cztM0_level2.evt modeM0/AS1C05_007T01_9000003518_23762cztM0_level2_quad_clean.evt
Size (bytes)1,287,915,840183,389,760
Size1.2 GB 174.9 MB
Events in quadrant A8,022,1581,110,075
Events in quadrant B10,149,2471,106,993
Events in quadrant C8,883,9271,088,594
Events in quadrant D10,797,5291,072,433

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03480
B03480
C03480
D03480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349353
B0407933
C0371423
D0430584

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170452081.220299%
B170457874.617190%
C170464202.463921%
D170454432.599003%

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 19315 17045 0 0 0.00% 0.00%
B 19315 17045 357 357 1.85% 2.09%
C 19316 17046 100 100 0.52% 0.59%
D 19315 17045 218 218 1.13% 1.28%

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 13 254 29875 66.67 2077 2027 417.7
A 3 137 18731 39.99 2077 2027 417.7
A 0 226 17811 37.79 2077 2027 417.7
B 3 64 1850820 4752.13 2034 1980 389.1
B 0 229 117872 297.88 2034 1980 389.1
B 0 189 116725 294.93 2034 1980 389.1
C 10 9 693924 1472.03 2008 2023 470.0
C 14 238 315042 665.95 2008 2023 470.0
C 7 247 30346 60.26 2008 2023 470.0
D 8 195 1576245 3179.11 2026 1967 495.2
D 1 52 818925 1649.77 2026 1967 495.2
D 13 174 315985 634.13 2026 1967 495.2

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