ASTROSAT CZTI

Data Quality Report

Orbit 16312

Creation date: 2024-06-27T17:20:51.121370
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/AS1A05_034T01_9000002404_16312cztM0_level2.evt modeM0/AS1A05_034T01_9000002404_16312cztM0_level2_quad_clean.evt
Size (bytes)468,239,04061,398,720
Size446.5 MB 58.6 MB
Events in quadrant A3,860,726333,813
Events in quadrant B3,368,652376,082
Events in quadrant C3,245,093370,571
Events in quadrant D3,302,186362,511

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148522
B0135261
C0130801
D0132691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59543696.197514%
B5954881.477998%
C59541011.696339%
D5954961.612361%

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 7310 5956 256 256 3.50% 4.30%
B 7310 5956 8 8 0.11% 0.13%
C 7310 5956 0 0 0.00% 0.00%
D 7310 5956 27 27 0.37% 0.45%

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 15 174 851427 5447.11 783 767 156.2
A 0 226 6856 38.99 783 767 156.2
A 12 194 5784 32.13 783 767 156.2
B 0 198 41478 269.77 818 803 150.8
B 15 35 40477 263.13 818 803 150.8
B 4 173 25736 165.36 818 803 150.8
C 14 238 125382 683.84 796 804 182.2
C 3 233 15890 82.81 796 804 182.2
C 13 61 5797 27.41 796 804 182.2
D 2 122 148111 756.8 797 780 194.7
D 10 70 102277 521.36 797 780 194.7
D 2 234 21611 107.0 797 780 194.7

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