ASTROSAT CZTI

Data Quality Report

Orbit 20200108_T03_175T01_9000003420_level2

Creation date: 2020-01-09T15:53:19.537453
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/AS1T03_175T01_9000003420cztM0_level2_bc.evt modeM0/AS1T03_175T01_9000003420cztM0_level2_quad_clean.evt
Size (bytes)91,180,80037,261,440
Size87.0 MB 35.5 MB
Events in quadrant A538,473235,871
Events in quadrant B580,799243,010
Events in quadrant C615,899236,408
Events in quadrant D843,299228,873

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055150
B056860
C059600
D064330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2561411.600937%
B2561702.733307%
C25611305.076142%
D2561813.162827%

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 3656 2560 0 0 0.00% 0.00%
B 3656 2560 3 3 0.08% 0.12%
C 3656 2561 0 0 0.00% 0.00%
D 3656 2561 7 7 0.19% 0.27%

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 13 254 3534 105.73 138 134 32.2
A 6 16 3187 94.94 138 134 32.2
A 0 226 908 24.07 138 134 32.2
B 10 247 26426 906.05 141 137 29.0
B 0 190 6555 221.18 141 137 29.0
B 3 209 2935 96.42 141 137 29.0
C 0 10 86439 2603.41 133 132 33.2
C 7 247 9273 275.73 133 132 33.2
C 8 208 4513 132.15 133 132 33.2
D 1 52 169907 4990.2 137 132 34.0
D 6 112 39127 1146.18 137 132 34.0
D 7 238 34616 1013.59 137 132 34.0

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