ASTROSAT CZTI

Data Quality Report

Orbit 23280

Creation date: 2024-06-27T18:52:17.424030
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_005T01_9000003440_23280cztM0_level2.evt modeM0/AS1C05_005T01_9000003440_23280cztM0_level2_quad_clean.evt
Size (bytes)519,433,920111,643,200
Size495.4 MB 106.5 MB
Events in quadrant A3,491,585723,900
Events in quadrant B3,694,666737,819
Events in quadrant C3,957,200706,164
Events in quadrant D4,079,553692,579

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01564
B01562
C01562
D01562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015826271
B016083289
C017082272
D017606281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7486450.601122%
B7481861.149579%
C74862052.738445%
D74841281.710315%

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 8383 7525 0 0 0.00% 0.00%
B 8384 7521 2 2 0.02% 0.03%
C 8383 7530 46 46 0.55% 0.61%
D 8383 7519 64 64 0.76% 0.85%

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 12315 62.58 904 884 182.7
A 3 137 8275 40.46 904 884 182.7
A 0 226 7776 37.73 904 884 182.7
B 4 206 103880 594.6 906 882 173.2
B 12 111 21385 118.36 906 882 173.2
B 11 111 18874 103.86 906 882 173.2
C 10 9 381650 1854.64 874 880 205.3
C 14 238 138118 668.45 874 880 205.3
C 2 16 18212 84.42 874 880 205.3
D 7 238 279800 1313.65 879 854 212.3
D 12 238 112469 525.63 879 854 212.3
D 12 233 101800 475.39 879 854 212.3

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