ASTROSAT CZTI

Data Quality Report

Orbit 20220728_A11_024T01_9000005250_level2

Creation date: 2022-07-30T12:53:39.007013
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/AS1A11_024T01_9000005250cztM0_level2_bc.evt modeM0/AS1A11_024T01_9000005250cztM0_level2_quad_clean.evt
Size (bytes)2,958,877,440838,114,560
Size2.8 GB 799.3 MB
Events in quadrant A15,570,2655,365,713
Events in quadrant B21,643,5905,312,419
Events in quadrant C20,729,8265,295,389
Events in quadrant D27,269,7334,979,338

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013260
B013260
C013260
D013260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01351740
B01637160
C01532550
D01789560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A646181400.216658%
B6461822863.537714%
C6461815302.367761%
D6461834605.354545%

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 90402 64633 14 14 0.02% 0.02%
B 90402 64613 153 153 0.17% 0.24%
C 90402 64620 168 168 0.19% 0.26%
D 90402 64614 1249 1249 1.38% 1.93%

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 10 83 2245827 3074.99 3308 3258 729.3
A 13 6 115980 154.56 3308 3258 729.3
A 13 254 103915 138.02 3308 3258 729.3
B 5 184 2412526 3677.13 3278 3204 655.2
B 0 229 1459656 2222.85 3278 3204 655.2
B 5 172 1397915 2128.62 3278 3204 655.2
C 14 254 3881993 5243.11 3205 3184 739.8
C 15 214 2600542 3510.93 3205 3184 739.8
C 0 10 1395434 1881.95 3205 3184 739.8
D 12 17 5861901 7780.87 3171 3079 753.0
D 2 250 1491447 1976.64 3171 3079 753.0
D 2 153 1231302 1631.15 3171 3079 753.0

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