ASTROSAT CZTI

Data Quality Report

Orbit 20180223_A04_216T01_9000001916_level2

Creation date: 2019-11-20T14:16:10.958852
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/AS1A04_216T01_9000001916cztM0_level2_bc.evt modeM0/AS1A04_216T01_9000001916cztM0_level2_quad_clean.evt
Size (bytes)6,594,641,2802,057,685,120
Size6.1 GB 1.9 GB
Events in quadrant A38,951,60313,482,301
Events in quadrant B63,719,28911,606,082
Events in quadrant C31,456,76513,606,675
Events in quadrant D54,791,43512,764,254

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032280
B032280
C032280
D032280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03465070
B05062270
C03242440
D04013490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15848927231.718100%
B1584893041219.188713%
C15848914280.901009%
D15848964434.065266%

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 182010 158490 68 68 0.04% 0.04%
B 182010 157838 2205 2205 1.21% 1.40%
C 182010 158490 2 2 0.00% 0.00%
D 182010 158475 1344 1344 0.74% 0.85%

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 2784218 1594.18 7984 7829 1741.6
A 8 15 2689263 1539.66 7984 7829 1741.6
A 15 223 1048594 597.6 7984 7829 1741.6
B 4 239 27187657 20244.62 7104 6916 1342.6
B 3 64 3719719 2765.35 7104 6916 1342.6
B 0 85 2694431 2001.7 7104 6916 1342.6
C 14 234 143463 77.31 7965 7867 1753.9
C 12 4 66931 33.68 7965 7867 1753.9
C 8 222 57802 28.47 7965 7867 1753.9
D 1 52 18639821 10130.85 7814 7534 1839.2
D 8 195 4071272 2209.56 7814 7534 1839.2
D 14 34 1300165 702.84 7814 7534 1839.2

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