ASTROSAT CZTI

Data Quality Report

Orbit 20181110_T03_034T01_9000002500_level2

Creation date: 2018-11-15T15:34:46.842899
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_034T01_9000002500cztM0_level2_bc.evt modeM0/AS1T03_034T01_9000002500cztM0_level2_quad_clean.evt
Size (bytes)1,924,479,360525,441,600
Size1.8 GB 501.1 MB
Events in quadrant A9,869,1843,318,805
Events in quadrant B10,771,5013,377,173
Events in quadrant C9,044,8003,249,355
Events in quadrant D25,601,8282,952,965

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0933630
B0963940
C0913140
D01631140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08980
B08980
C08980
D08980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A439026521.485126%
B439037571.724256%
C439037531.715145%
D43902768317.500342%

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 54246 43903 4 4 0.01% 0.01%
B 54246 43904 7 7 0.01% 0.02%
C 54246 43903 1 1 0.00% 0.00%
D 54246 43892 728 728 1.34% 1.66%

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 23 443030 866.33 2372 2323 508.7
A 15 174 244414 475.9 2372 2323 508.7
A 9 143 52195 98.04 2372 2323 508.7
B 15 35 498280 1113.79 2389 2327 445.3
B 10 16 228491 507.91 2389 2327 445.3
B 0 229 196390 435.82 2389 2327 445.3
C 3 233 144069 267.02 2297 2286 531.0
C 0 207 55301 99.84 2297 2286 531.0
C 13 61 13642 21.39 2297 2286 531.0
D 1 52 16485880 32828.7 2179 2100 502.1
D 10 70 293015 579.38 2179 2100 502.1
D 2 234 183035 360.35 2179 2100 502.1

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