ASTROSAT CZTI

Data Quality Report

Orbit 20181201_A05_185T04_9000002548_level2

Creation date: 2018-12-10T11:32:13.759304
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/AS1A05_185T04_9000002548cztM0_level2_bc.evt modeM0/AS1A05_185T04_9000002548cztM0_level2_quad_clean.evt
Size (bytes)11,308,259,5204,208,129,280
Size10.5 GB 3.9 GB
Events in quadrant A66,956,61027,034,408
Events in quadrant B71,380,78227,062,012
Events in quadrant C82,878,49625,681,995
Events in quadrant D98,993,86925,290,855

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05090
B05090
C05090
D05090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06759160
B06944930
C07430760
D07860420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066720
B066720
C066720
D066720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A32700134141.044034%
B32700146861.433023%
C32700063131.930581%
D32700094882.901529%

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 378428 327002 28 28 0.01% 0.01%
B 378428 327000 45 45 0.01% 0.01%
C 378427 327000 41 41 0.01% 0.01%
D 378427 326994 1693 1693 0.45% 0.52%

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 1508539 408.1 16817 16506 3656.0
A 4 2 398308 104.43 16817 16506 3656.0
A 0 23 268984 69.06 16817 16506 3656.0
B 7 220 1284598 398.3 16891 16455 3183.9
B 0 219 961650 296.87 16891 16455 3183.9
B 0 189 946103 291.99 16891 16455 3183.9
C 3 233 18789066 5035.75 16067 15963 3728.0
C 4 254 1913577 509.02 16067 15963 3728.0
C 13 61 95734 21.4 16067 15963 3728.0
D 5 222 18242929 4704.24 16492 15891 3874.6
D 1 52 5328560 1371.15 16492 15891 3874.6
D 11 176 2482488 636.61 16492 15891 3874.6

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