ASTROSAT CZTI

Data Quality Report

Orbit 20200404_T03_183T01_9000003606_level2

Creation date: 2020-06-10T02:59:34.588106
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/AS1T03_183T01_9000003606cztM0_level2_bc.evt modeM0/AS1T03_183T01_9000003606cztM0_level2_quad_clean.evt
Size (bytes)25,177,872,96010,170,429,120
Size23.4 GB 9.5 GB
Events in quadrant A145,713,16769,691,991
Events in quadrant B180,696,31169,639,211
Events in quadrant C146,034,28666,917,782
Events in quadrant D252,571,08964,036,327

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013129940
B014410510
C013120830
D016532270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060050
B060050
C060050
D060050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09660
B09670
C09670
D09670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A590338119112.017658%
B590338299315.070146%
C590338166932.827702%
D590337283154.796413%

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 691051 590346 245 245 0.04% 0.04%
B 691049 590268 3385 3385 0.49% 0.57%
C 691049 590323 1763 1763 0.26% 0.30%
D 691049 590306 5830 5830 0.84% 0.99%

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 14 111 20821891 3010.17 31691 31245 6906.8
A 4 2 2466463 352.58 31691 31245 6906.8
A 13 254 885442 123.67 31691 31245 6906.8
B 3 64 53193775 8957.74 31621 30971 5934.8
B 4 200 1392935 229.49 31621 30971 5934.8
B 5 172 1121988 183.83 31621 30971 5934.8
C 2 16 22379599 3118.35 30299 30251 7167.0
C 10 9 3412825 471.96 30299 30251 7167.0
C 7 247 2513676 346.51 30299 30251 7167.0
D 1 52 62296064 8748.03 30427 29453 7117.8
D 12 218 31159136 4373.51 30427 29453 7117.8
D 8 195 23770926 3335.51 30427 29453 7117.8

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