ASTROSAT CZTI

Data Quality Report

Orbit 20171114_A04_022T05_9000001690_level2

Creation date: 2018-01-09T04:23:12.365837
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/AS1A04_022T05_9000001690cztM0_level2_bc.evt modeM0/AS1A04_022T05_9000001690cztM0_level2_quad_clean.evt
Size (bytes)2,992,711,680842,500,800
Size2.8 GB 803.5 MB
Events in quadrant A27,850,3905,046,926
Events in quadrant B20,823,6355,214,523
Events in quadrant C13,096,0555,556,032
Events in quadrant D24,355,4415,156,453

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013480
B013480
C013480
D013480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02048000
B01672400
C01354150
D01734350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0950
C0950
D0950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6624162039.364291%
B6624127284.118295%
C662413610.544980%
D6624118132.736976%

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 75757 66235 264 264 0.35% 0.40%
B 75757 66242 15 15 0.02% 0.02%
C 75757 66242 0 0 0.00% 0.00%
D 75757 66244 224 224 0.30% 0.34%

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 8 5 14503543 21148.46 3167 3103 685.6
A 9 143 541881 785.79 3167 3103 685.6
A 1 162 283270 408.61 3167 3103 685.6
B 4 239 5606282 9029.04 3278 3190 620.6
B 15 204 869741 1396.39 3278 3190 620.6
B 11 51 405932 648.99 3278 3190 620.6
C 13 61 19426 20.7 3338 3263 780.9
C 14 67 18470 19.47 3338 3263 780.9
C 7 236 14409 14.27 3338 3263 780.9
D 1 52 3081083 3942.22 3306 3179 780.8
D 5 222 2038354 2606.68 3306 3179 780.8
D 13 152 1676713 2143.48 3306 3179 780.8

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