ASTROSAT CZTI

Data Quality Report

Orbit 20180629_T02_054T01_9000002200_level2

Creation date: 2018-07-02T10:57:55.312961
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/AS1T02_054T01_9000002200cztM0_level2_bc.evt modeM0/AS1T02_054T01_9000002200cztM0_level2_quad_clean.evt
Size (bytes)3,775,392,0001,448,193,600
Size3.5 GB 1.3 GB
Events in quadrant A19,930,7519,665,694
Events in quadrant B29,468,6729,359,200
Events in quadrant C20,551,1299,644,474
Events in quadrant D38,329,6469,097,550

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01861540
B02246470
C01855050
D02590710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018100
B018100
C018100
D018100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A889729121.025042%
B8897251035.735512%
C889726410.720451%
D8897281399.147822%

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 103897 88975 13 13 0.01% 0.01%
B 103897 88963 858 858 0.83% 0.96%
C 103898 88976 3 3 0.00% 0.00%
D 103898 88957 1844 1844 1.77% 2.07%

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 619433 595.11 4773 4698 1033.0
A 15 239 283199 269.61 4773 4698 1033.0
A 11 29 192547 181.85 4773 4698 1033.0
B 3 64 5465494 6409.97 4622 4526 851.9
B 10 16 3434254 4025.74 4622 4526 851.9
B 0 189 840995 981.83 4622 4526 851.9
C 3 233 1879163 1820.03 4675 4631 1029.9
C 0 207 310158 296.64 4675 4631 1029.9
C 3 232 32087 26.66 4675 4631 1029.9
D 7 254 18755924 17801.76 4536 4423 1053.4
D 13 104 1000605 945.73 4536 4423 1053.4
D 2 234 328053 307.24 4536 4423 1053.4

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