ASTROSAT CZTI

Data Quality Report

Orbit 20211017_A10_057T04_9000004728_level2

Creation date: 2021-10-21T15:33:18.702585
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A10_057T04_9000004728cztM0_level2_bc.evt modeM0/AS1A10_057T04_9000004728cztM0_level2_quad_clean.evt
Size (bytes)5,714,890,5601,384,413,120
Size5.3 GB 1.3 GB
Events in quadrant A29,458,4738,794,885
Events in quadrant B34,884,2838,663,460
Events in quadrant C26,097,4548,833,069
Events in quadrant D75,195,2118,132,315

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02464480
B02797030
C02322200
D03996730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04220
B04220
C04220
D04220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022320
B022320
C022320
D022320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10958720891.906248%
B10958760335.505215%
C1095876250.570323%
D109586102079.314146%

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 151415 109586 149 149 0.10% 0.14%
B 151415 109570 327 327 0.22% 0.30%
C 151415 109588 115 115 0.08% 0.10%
D 151415 109581 2340 2340 1.55% 2.14%

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 15 249 5388509 4326.12 5686 5605 1244.3
A 12 16 948677 757.93 5686 5605 1244.3
A 0 254 252193 198.18 5686 5605 1244.3
B 12 1 5520970 5055.99 5590 5478 1090.9
B 0 219 1482219 1353.71 5590 5478 1090.9
B 5 172 994111 906.27 5590 5478 1090.9
C 8 229 1496471 1170.91 5588 5541 1273.3
C 0 10 1083520 846.59 5588 5541 1273.3
C 8 79 413839 320.66 5588 5541 1273.3
D 8 195 27105991 20390.04 5362 5236 1329.1
D 2 250 7042029 5294.34 5362 5236 1329.1
D 7 80 4346538 3266.31 5362 5236 1329.1

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