ASTROSAT CZTI

Data Quality Report

Orbit 20181008_A05_069T05_9000002420_level2

Creation date: 2018-10-10T11:04:31.717429
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_069T05_9000002420cztM0_level2_bc.evt modeM0/AS1A05_069T05_9000002420cztM0_level2_quad_clean.evt
Size (bytes)2,317,872,960829,442,880
Size2.2 GB 791.0 MB
Events in quadrant A15,280,4515,257,276
Events in quadrant B17,790,6775,354,537
Events in quadrant C14,036,4085,085,147
Events in quadrant D18,583,8874,893,493

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01419080
B01522200
C01383710
D01558660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013480
B013480
C013480
D013480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01030
C01030
D01030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6609511121.682427%
B6609514382.175656%
C660959971.508435%
D6609515822.393524%

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 76436 66096 37 37 0.05% 0.06%
B 76436 66096 58 58 0.08% 0.09%
C 76436 66097 1 1 0.00% 0.00%
D 76436 66096 53 53 0.07% 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 15 174 1086325 1472.59 3447 3382 735.4
A 9 143 517503 699.1 3447 3382 735.4
A 15 223 309039 415.63 3447 3382 735.4
B 10 16 1103081 1659.66 3513 3421 662.6
B 15 35 845519 1270.94 3513 3421 662.6
B 0 189 527309 790.68 3513 3421 662.6
C 3 233 1083925 1394.54 3334 3316 774.9
C 10 169 71487 87.98 3334 3316 774.9
C 8 128 25012 28.0 3334 3316 774.9
D 2 122 2976699 3845.1 3354 3235 773.3
D 10 70 1158265 1493.61 3354 3235 773.3
D 12 218 1041680 1342.85 3354 3235 773.3

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