ASTROSAT CZTI

Data Quality Report

Orbit 20181026_A05_002T09_9000002456_level2

Creation date: 2018-10-27T11:00:02.271026
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/AS1A05_002T09_9000002456cztM0_level2_bc.evt modeM0/AS1A05_002T09_9000002456cztM0_level2_quad_clean.evt
Size (bytes)301,006,080140,238,720
Size287.1 MB 133.7 MB
Events in quadrant A1,841,080951,319
Events in quadrant B2,265,899970,568
Events in quadrant C2,369,452902,321
Events in quadrant D2,109,010889,156

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166910
B0185710
C0185540
D0172160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7682911.184587%
B76821752.278053%
C76821471.913564%
D7682931.210622%

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 9022 7682 0 0 0.00% 0.00%
B 9022 7682 0 0 0.00% 0.00%
C 9023 7683 11 11 0.12% 0.14%
D 9022 7682 3 3 0.03% 0.04%

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 96 31331 305.01 467 460 101.2
A 15 223 6981 64.43 467 460 101.2
A 3 1 4667 41.57 467 460 101.2
B 15 35 280753 3136.31 474 465 89.4
B 0 229 42684 472.41 474 465 89.4
B 0 198 41079 454.45 474 465 89.4
C 7 247 561867 5439.31 440 440 103.2
C 3 233 115894 1118.56 440 440 103.2
C 13 61 2661 21.52 440 440 103.2
D 5 222 146800 1402.24 451 437 104.4
D 1 52 101815 971.26 451 437 104.4
D 2 33 66097 629.06 451 437 104.4

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