ASTROSAT CZTI

Data Quality Report

Orbit 20170321_A02_165T03_9000001098_level2

Creation date: 2017-09-23T11:21:44.534819
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/AS1A02_165T03_9000001098cztM0_level2.evt modeM0/AS1A02_165T03_9000001098cztM0_level2_quad_clean.evt
Size (bytes)581,221,440118,632,960
Size554.3 MB 113.1 MB
Events in quadrant A3,922,398740,687
Events in quadrant B4,130,026765,306
Events in quadrant C3,959,622775,368
Events in quadrant D5,019,798727,546

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174580
B0179270
C0175290
D0207850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8409590.701629%
B84091011.201094%
C8409640.761089%
D84091621.926507%

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 11105 8411 0 0 0.00% 0.00%
B 11105 8411 4 4 0.04% 0.05%
C 11105 8411 0 0 0.00% 0.00%
D 11105 8411 81 81 0.73% 0.96%

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 0 226 9471 41.77 1012 991 203.0
A 13 14 8968 39.29 1012 991 203.0
A 12 194 8784 38.39 1012 991 203.0
B 4 239 45243 231.48 1027 1003 191.1
B 5 255 44509 227.63 1027 1003 191.1
B 12 111 21084 105.07 1027 1003 191.1
C 1 16 19481 80.05 1007 1014 230.7
C 13 61 7641 28.73 1007 1014 230.7
C 9 236 3546 10.98 1007 1014 230.7
D 1 52 476332 1993.77 987 963 238.4
D 11 144 410668 1718.37 987 963 238.4
D 2 14 271410 1134.3 987 963 238.4

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