ASTROSAT CZTI

Data Quality Report

Orbit 11936

Creation date: 2024-06-27T16:20:17.682563
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/AS1A04_124T01_9000001766_11936cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11936cztM0_level2_quad_clean.evt
Size (bytes)1,341,535,680276,171,840
Size1.2 GB 263.4 MB
Events in quadrant A10,020,9351,876,750
Events in quadrant B9,787,2381,890,576
Events in quadrant C6,830,9671,851,290
Events in quadrant D12,941,4391,674,307

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400374
B0392393
C0314633
D0485363

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155296864.417541%
B155297664.932707%
C155291220.785627%
D15529184311.868118%

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 17895 15530 431 431 2.41% 2.78%
B 17895 15530 434 434 2.43% 2.79%
C 17895 15530 1 1 0.01% 0.01%
D 17895 15530 1437 1437 8.03% 9.25%

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 14 63 2079978 5772.65 1784 1746 360.0
A 1 162 246746 680.53 1784 1746 360.0
A 13 251 188727 519.37 1784 1746 360.0
B 4 239 1676764 4962.41 1783 1738 337.5
B 15 204 514431 1518.9 1783 1738 337.5
B 0 85 222129 652.93 1783 1738 337.5
C 0 207 13751 30.05 1742 1742 399.6
C 14 238 13717 29.97 1742 1742 399.6
C 13 61 12886 27.89 1742 1742 399.6
D 1 52 3749492 9423.35 1647 1597 397.7
D 7 80 1021770 2565.03 1647 1597 397.7
D 8 195 703239 1764.14 1647 1597 397.7

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