ASTROSAT CZTI

Data Quality Report

Orbit 20201019_A09_038T13_9000003928_level2

Creation date: 2021-01-07T17:22:05.844388
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/AS1A09_038T13_9000003928cztM0_level2_bc.evt modeM0/AS1A09_038T13_9000003928cztM0_level2_quad_clean.evt
Size (bytes)324,368,640133,050,240
Size309.3 MB 126.9 MB
Events in quadrant A1,682,919928,867
Events in quadrant B1,652,116937,621
Events in quadrant C3,626,889816,302
Events in quadrant D2,403,290885,015

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145830
B0144260
C0221270
D0167210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66282093.153289%
B66282343.530477%
C6628114117.214846%
D66282643.983102%

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 7917 6627 0 0 0.00% 0.00%
B 7917 6626 0 0 0.00% 0.00%
C 7917 6626 140 140 1.77% 2.11%
D 7917 6627 21 21 0.27% 0.32%

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 78643 884.9 408 404 88.4
A 6 16 24114 268.17 408 404 88.4
A 13 254 10935 119.11 408 404 88.4
B 7 205 18188 226.67 410 404 78.5
B 15 33 17523 218.19 410 404 78.5
B 0 229 14955 185.46 410 404 78.5
C 2 16 1828887 21238.68 361 361 86.1
C 15 208 408237 4737.56 361 361 86.1
C 1 16 2530 25.19 361 361 86.1
D 1 52 701244 7554.58 396 388 92.8
D 2 250 112013 1203.21 396 388 92.8
D 2 120 30309 322.52 396 388 92.8

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