ASTROSAT CZTI

Data Quality Report

Orbit 00946

Creation date: 2024-06-27T14:05:08.379624
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/AS1P01_998T01_9000000188_00946cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00946cztM0_level2_quad_clean.evt
Size (bytes)1,441,445,760125,418,240
Size1.3 GB 119.6 MB
Events in quadrant A10,592,719820,813
Events in quadrant B10,868,548815,602
Events in quadrant C11,227,218802,364
Events in quadrant D10,418,299783,021

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373760
B0381370
C0391880
D0368480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A830190.108421%
B8301780.939646%
C8301220.265028%
D83011101.325142%

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 8356 8302 508 508 6.08% 6.12%
B 8356 8302 638 638 7.64% 7.68%
C 8356 8302 744 744 8.90% 8.96%
D 8356 8302 697 697 8.34% 8.40%

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 14 170 489039 764.95 2633 2658 635.8
A 11 79 9692 11.06 2633 2658 635.8
A 3 111 8149 8.64 2633 2658 635.8
B 5 191 155864 235.66 2764 2776 649.6
B 8 234 110757 166.23 2764 2776 649.6
B 5 249 42283 60.82 2764 2776 649.6
C 10 34 758366 1065.52 2546 2632 709.3
C 15 241 432917 606.66 2546 2632 709.3
C 3 111 38539 50.63 2546 2632 709.3
D 12 188 635325 842.29 2423 2503 751.3
D 1 4 507850 672.62 2423 2503 751.3
D 12 22 115656 150.61 2423 2503 751.3

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