ASTROSAT CZTI

Data Quality Report

Orbit 20200506_A08_003T16_9000003650_level2

Creation date: 2020-05-11T11:26:18.997239
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/AS1A08_003T16_9000003650cztM0_level2_bc.evt modeM0/AS1A08_003T16_9000003650cztM0_level2_quad_clean.evt
Size (bytes)1,638,910,080565,427,520
Size1.5 GB 539.2 MB
Events in quadrant A9,973,2533,603,134
Events in quadrant B10,238,4673,679,946
Events in quadrant C13,641,2413,425,869
Events in quadrant D12,730,6843,346,730

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09100
B09100
C09100
D09100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0939160
B0952130
C01087930
D01031270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730
B0730
C0730
D0730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A447336671.491069%
B447337631.705676%
C4473312122.709409%
D447336731.504482%

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 52093 44733 1 1 0.00% 0.00%
B 52093 44733 5 5 0.01% 0.01%
C 52093 44733 67 67 0.13% 0.15%
D 52093 44731 43 43 0.08% 0.10%

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 15 223 205361 383.74 2504 2464 528.7
A 13 254 64714 117.73 2504 2464 528.7
A 15 239 55212 99.76 2504 2464 528.7
B 0 189 266146 563.3 2542 2484 468.1
B 4 80 117129 244.93 2542 2484 468.1
B 0 190 61859 126.85 2542 2484 468.1
C 7 247 4403105 7947.41 2382 2375 553.7
C 2 16 48310 82.96 2382 2375 553.7
C 0 10 27346 45.1 2382 2375 553.7
D 1 52 2000714 3633.98 2419 2340 549.9
D 8 195 569164 1030.75 2419 2340 549.9
D 2 244 348815 630.05 2419 2340 549.9

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