ASTROSAT CZTI

Data Quality Report

Orbit 20191221_A07_049T01_9000003380_level2

Creation date: 2019-12-23T12:31:19.741519
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_049T01_9000003380cztM0_level2_bc.evt modeM0/AS1A07_049T01_9000003380cztM0_level2_quad_clean.evt
Size (bytes)1,879,971,840640,442,880
Size1.8 GB 610.8 MB
Events in quadrant A10,407,1324,070,884
Events in quadrant B10,788,9834,114,173
Events in quadrant C10,074,5983,912,441
Events in quadrant D22,126,8003,740,405

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01066570
B01076080
C01069690
D01473860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09500
B010600
C010600
D010600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A519643650.702409%
B519654920.946791%
C519656351.221976%
D5196220393.924021%

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 58240 51967 1 1 0.00% 0.00%
B 58240 51966 11 11 0.02% 0.02%
C 58240 51969 0 0 0.00% 0.00%
D 58240 51965 316 316 0.54% 0.61%

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 79587 131.79 2680 2631 583.9
A 0 23 26352 40.62 2680 2631 583.9
A 0 226 18392 26.99 2680 2631 583.9
B 0 189 150403 289.12 2694 2624 511.1
B 0 190 112851 215.65 2694 2624 511.1
B 0 228 66502 124.97 2694 2624 511.1
C 10 22 104273 166.29 2568 2551 611.7
C 7 247 66822 105.06 2568 2551 611.7
C 2 16 28807 42.92 2568 2551 611.7
D 7 238 6000174 9829.17 2597 2505 610.2
D 1 52 2238543 3664.49 2597 2505 610.2
D 12 233 1416880 2317.92 2597 2505 610.2

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