ASTROSAT CZTI

Data Quality Report

Orbit 20180720_T02_069T01_9000002242_level2

Creation date: 2018-07-30T18:03:48.065631
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/AS1T02_069T01_9000002242cztM0_level2_bc.evt modeM0/AS1T02_069T01_9000002242cztM0_level2_quad_clean.evt
Size (bytes)1,943,006,400618,033,600
Size1.8 GB 589.4 MB
Events in quadrant A10,786,9613,969,533
Events in quadrant B18,210,8433,810,182
Events in quadrant C14,515,8223,851,640
Events in quadrant D12,005,3383,741,599

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09960
B09960
C09960
D09960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01025940
B01347030
C01187990
D01074640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487327471.532874%
B4873240858.382582%
C4873222454.606829%
D487329321.912501%

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 59366 48713 7 7 0.01% 0.01%
B 59366 48707 341 341 0.57% 0.70%
C 59366 48715 197 197 0.33% 0.40%
D 59366 48717 104 104 0.18% 0.21%

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 12 189 859147 1554.09 2523 2471 551.2
A 13 248 112732 200.02 2523 2471 551.2
A 15 239 75197 131.93 2523 2471 551.2
B 3 112 6905561 14907.24 2469 2406 463.1
B 3 64 583790 1255.49 2469 2406 463.1
B 0 229 343774 737.18 2469 2406 463.1
C 3 233 4832671 9023.08 2430 2398 535.3
C 7 247 149037 273.93 2430 2398 535.3
C 13 61 14454 22.52 2430 2398 535.3
D 2 33 604103 1050.76 2469 2379 572.7
D 13 172 581829 1011.87 2469 2379 572.7
D 13 104 276131 478.04 2469 2379 572.7

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