ASTROSAT CZTI

Data Quality Report

Orbit 20220612_A10_071T36_9000005182_level2

Creation date: 2022-06-14T16:31:34.885880
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_071T36_9000005182cztM0_level2_bc.evt modeM0/AS1A10_071T36_9000005182cztM0_level2_quad_clean.evt
Size (bytes)2,666,517,120708,056,640
Size2.5 GB 675.3 MB
Events in quadrant A13,335,3954,512,800
Events in quadrant B23,310,0854,391,275
Events in quadrant C16,213,8274,433,642
Events in quadrant D23,937,1364,116,110

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011880
B011880
C011880
D011880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01204800
B01644680
C01272030
D01627900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A581881250.214821%
B5818840767.004881%
C581885080.873032%
D5818825704.416718%

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 80417 58201 10 10 0.01% 0.02%
B 80417 58187 280 280 0.35% 0.48%
C 80417 58190 75 75 0.09% 0.13%
D 80417 58179 423 423 0.53% 0.73%

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 10 83 1465202 2227.68 2978 2926 656.4
A 9 143 183009 274.34 2978 2926 656.4
A 13 254 82071 120.57 2978 2926 656.4
B 5 172 6278244 10770.85 2928 2861 582.6
B 5 236 2544783 4362.87 2928 2861 582.6
B 4 171 1410369 2415.8 2928 2861 582.6
C 15 214 2274290 3408.4 2911 2890 666.4
C 0 10 1937742 2903.39 2911 2890 666.4
C 0 207 476089 710.07 2911 2890 666.4
D 12 6 4324066 6380.12 2863 2775 677.3
D 13 171 1608822 2371.23 2863 2775 677.3
D 7 223 1548156 2281.66 2863 2775 677.3

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