ASTROSAT CZTI

Data Quality Report

Orbit 20210824_C06_002T04_9000004660_level2

Creation date: 2021-08-27T15:04:18.947921
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/AS1C06_002T04_9000004660cztM0_level2_bc.evt modeM0/AS1C06_002T04_9000004660cztM0_level2_quad_clean.evt
Size (bytes)5,711,990,4001,366,695,360
Size5.3 GB 1.3 GB
Events in quadrant A19,627,3339,614,234
Events in quadrant B59,633,1838,608,911
Events in quadrant C44,263,5418,456,387
Events in quadrant D43,483,3558,667,690

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018080
B017990
C018030
D018040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01845810
B03384090
C02953680
D02692840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01360
C01320
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A884167530.851656%
B879431384315.740878%
C878101244214.169229%
D8808750645.748862%

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 114925 89127 3 3 0.00% 0.00%
B 114925 88733 1161 1161 1.01% 1.31%
C 114925 88425 138 138 0.12% 0.16%
D 114926 88797 231 231 0.20% 0.26%

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 12 96 612528 582.24 4856 4788 1043.8
A 13 254 166061 154.51 4856 4788 1043.8
A 13 6 150725 139.81 4856 4788 1043.8
B 6 159 22756069 26898.09 4442 4347 845.8
B 4 80 13753360 16254.69 4442 4347 845.8
B 5 172 2138812 2523.46 4442 4347 845.8
C 3 233 22858018 22229.19 4329 4322 1028.1
C 0 10 3968319 3855.68 4329 4322 1028.1
C 14 254 284811 272.82 4329 4322 1028.1
D 8 195 12512408 11755.65 4647 4521 1064.0
D 12 33 6456785 6064.22 4647 4521 1064.0
D 13 249 2537836 2380.96 4647 4521 1064.0

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