ASTROSAT CZTI

Data Quality Report

Orbit 31762

Creation date: 2024-06-27T20:32:26.143516
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/AS1A10_059T02_9000004636_31762cztM0_level2.evt modeM0/AS1A10_059T02_9000004636_31762cztM0_level2_quad_clean.evt
Size (bytes)1,057,832,64093,346,560
Size1008.8 MB 89.0 MB
Events in quadrant A11,859,859452,450
Events in quadrant B6,273,771655,271
Events in quadrant C7,979,105579,829
Events in quadrant D5,436,313632,401

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0402952
B0240462
C0286163
D0211312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7246433459.812310%
B72464576.306928%
C7245136118.785369%
D72452823.892340%

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 7676 7247 2476 2476 32.26% 34.17%
B 7676 7247 209 209 2.72% 2.88%
C 7675 7246 939 939 12.23% 12.96%
D 7675 7246 193 193 2.51% 2.66%

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 0 13 9648559 83970.58 571 560 114.9
A 13 254 9867 81.0 571 560 114.9
A 3 137 5779 45.42 571 560 114.9
B 6 159 2013278 12429.79 843 822 161.9
B 5 172 716830 4422.37 843 822 161.9
B 5 255 100655 616.61 843 822 161.9
C 3 233 3397366 18965.86 769 772 179.1
C 0 10 1034399 5771.55 769 772 179.1
C 10 22 386123 2151.72 769 772 179.1
D 8 195 1160009 5794.22 834 810 200.1
D 12 218 369358 1842.18 834 810 200.1
D 13 249 187010 930.72 834 810 200.1

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