ASTROSAT CZTI

Data Quality Report

Orbit 20200512_C05_013T04_9000003660_level2

Creation date: 2020-05-14T17:01:32.995260
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/AS1C05_013T04_9000003660cztM0_level2_bc.evt modeM0/AS1C05_013T04_9000003660cztM0_level2_quad_clean.evt
Size (bytes)259,827,840140,532,480
Size247.8 MB 134.0 MB
Events in quadrant A1,490,315952,352
Events in quadrant B1,534,169971,732
Events in quadrant C1,794,860921,066
Events in quadrant D2,533,722892,753

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155990
B0157110
C0163590
D0183810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74462984.002149%
B74462833.800698%
C74462423.250067%
D74463204.297609%

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 7801 7447 0 0 0.00% 0.00%
B 7801 7446 0 0 0.00% 0.00%
C 7801 7446 0 0 0.00% 0.00%
D 7801 7446 6 6 0.08% 0.08%

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 6 16 14669 163.38 381 373 87.5
A 13 254 11510 127.28 381 373 87.5
A 12 194 2437 23.59 381 373 87.5
B 0 190 14971 193.18 387 377 75.5
B 0 230 8084 102.02 387 377 75.5
B 0 245 5230 64.24 387 377 75.5
C 7 247 356914 4030.69 367 364 88.5
C 3 233 19530 216.67 367 364 88.5
C 2 16 3486 35.29 367 364 88.5
D 7 238 569538 6235.34 371 356 91.3
D 1 52 290614 3179.75 371 356 91.3
D 8 195 132049 1442.69 371 356 91.3

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