ASTROSAT CZTI

Data Quality Report

Orbit 20151124_P01_156T01_9000000118_level2

Creation date: 2017-10-26T21:00:33.682968
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/AS1P01_156T01_9000000118cztM0_level2.evt modeM0/AS1P01_156T01_9000000118cztM0_level2_quad_clean.evt
Size (bytes)5,928,085,440462,070,080
Size5.5 GB 440.7 MB
Events in quadrant A44,063,7702,897,908
Events in quadrant B47,677,1882,916,720
Events in quadrant C43,301,6882,897,288
Events in quadrant D42,101,1142,790,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01566500
B01674800
C01544070
D01508800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07380
B07380
C07380
D07380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A362963450.950518%
B362965731.578686%
C362963200.881640%
D362964951.363787%

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 40475 36299 1481 1481 3.66% 4.08%
B 40475 36300 2313 2313 5.71% 6.37%
C 40475 36299 1260 1260 3.11% 3.47%
D 40475 36298 1852 1852 4.58% 5.10%

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 0 231 166251 56.02 11409 11541 2761.7
A 15 171 121129 39.68 11409 11541 2761.7
A 15 17 47091 12.87 11409 11541 2761.7
B 5 191 526336 184.79 11886 11968 2783.6
B 8 234 325996 112.82 11886 11968 2783.6
B 5 249 308096 106.38 11886 11968 2783.6
C 15 241 207898 64.8 10910 11334 3033.5
C 3 111 148487 45.21 10910 11334 3033.5
C 12 4 86164 24.67 10910 11334 3033.5
D 7 207 1389829 420.81 10576 10985 3276.6
D 10 85 503512 150.32 10576 10985 3276.6
D 1 4 387152 114.8 10576 10985 3276.6

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