ASTROSAT CZTI

Data Quality Report

Orbit 43798

Creation date: 2024-06-27T22:55:54.828656
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/AS1A13_018T01_9000005906_43798cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43798cztM0_level2_quad_clean.evt
Size (bytes)728,795,520113,520,960
Size695.0 MB 108.3 MB
Events in quadrant A4,685,472812,822
Events in quadrant B4,360,373823,660
Events in quadrant C8,772,050662,896
Events in quadrant D8,585,174620,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189260
B0180150
C0312120
D0306610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7428781.050081%
B74282353.163705%
C7428152420.516963%
D7428134618.120625%

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 7428 7428 43 43 0.58% 0.58%
B 7428 7428 137 137 1.84% 1.84%
C 7428 7428 1394 1394 18.77% 18.77%
D 7428 7428 1058 1058 14.24% 14.24%

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 1039513 5874.01 845 828 176.8
A 15 223 249871 1408.4 845 828 176.8
A 13 248 97864 548.76 845 828 176.8
B 5 235 287660 1733.87 838 813 165.4
B 0 200 117933 707.94 838 813 165.4
B 15 36 116078 696.73 838 813 165.4
C 15 174 3032501 17125.43 752 756 177.0
C 15 158 1911055 10790.71 752 756 177.0
C 3 233 344118 1939.55 752 756 177.0
D 12 33 2576151 12846.1 775 752 200.5
D 5 222 781093 3892.34 775 752 200.5
D 1 52 540625 2692.89 775 752 200.5

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