ASTROSAT CZTI

Data Quality Report

Orbit 20160714_G05_219T01_9000000540_level2

Creation date: 2019-11-11T16:32:18.196874
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/AS1G05_219T01_9000000540cztM0_level2_bc.evt modeM0/AS1G05_219T01_9000000540cztM0_level2_quad_clean.evt
Size (bytes)19,410,966,7203,667,893,120
Size18.1 GB 3.4 GB
Events in quadrant A76,207,98424,664,503
Events in quadrant B323,761,98817,773,176
Events in quadrant C78,953,09123,846,249
Events in quadrant D87,736,13123,408,835

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063620
B063620
C063640
D063620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04940
B04940
C04930
D04940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07024970
B015248640
C07357060
D07308820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31206268132.183220%
B31158912460039.988575%
C312076126234.044848%
D31188285222.732444%

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 363927 312733 310 310 0.09% 0.10%
B 363927 312233 71992 71992 19.78% 23.06%
C 363926 312730 382 382 0.10% 0.12%
D 363927 312643 952 952 0.26% 0.30%

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 13 251 7054817 2066.35 15326 14976 3406.9
A 0 13 2707982 790.46 15326 14976 3406.9
A 15 234 2609950 761.68 15326 14976 3406.9
B 3 0 264093804 114359.02 11953 11588 2309.2
B 14 167 4648339 2007.91 11953 11588 2309.2
B 15 204 2761441 1190.81 11953 11588 2309.2
C 9 247 16755333 5162.2 14628 14358 3243.0
C 9 144 2176032 666.57 14628 14358 3243.0
C 9 16 1595989 487.71 14628 14358 3243.0
D 13 53 7377845 2083.16 15021 14412 3534.7
D 2 63 4840640 1365.37 15021 14412 3534.7
D 2 136 4284104 1207.92 15021 14412 3534.7

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