ASTROSAT CZTI

Data Quality Report

Orbit 19389

Creation date: 2024-06-27T18:02:16.470011
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/AS1A05_208T03_9000002874_19389cztM0_level2.evt modeM0/AS1A05_208T03_9000002874_19389cztM0_level2_quad_clean.evt
Size (bytes)1,479,444,480151,925,760
Size1.4 GB 144.9 MB
Events in quadrant A5,969,7991,026,888
Events in quadrant B5,974,6471,035,659
Events in quadrant C5,984,364990,369
Events in quadrant D26,009,009657,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263593
B0261683
C0262443
D0860793

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12854550.427882%
B12853730.567961%
C128531030.801369%
D12853836465.074302%

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 14099 12856 10 10 0.07% 0.08%
B 14098 12854 0 0 0.00% 0.00%
C 14098 12854 0 0 0.00% 0.00%
D 14097 12852 7956 7956 56.44% 61.90%

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 5 16 94326 303.94 1517 1482 305.5
A 12 96 31348 97.77 1517 1482 305.5
A 13 254 17738 53.22 1517 1482 305.5
B 12 111 36078 119.67 1512 1472 289.2
B 11 111 31708 104.55 1512 1472 289.2
B 14 111 27730 90.8 1512 1472 289.2
C 14 238 224147 649.48 1458 1463 342.9
C 3 233 59697 169.85 1458 1463 342.9
C 8 128 10468 26.26 1458 1463 342.9
D 10 66 14940427 59192.43 1038 1007 252.4
D 7 238 4776218 18920.17 1038 1007 252.4
D 1 52 2317782 9179.44 1038 1007 252.4

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