ASTROSAT CZTI

Data Quality Report

Orbit 00714

Creation date: 2024-06-27T14:01:56.869276
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/AS1P01_147T01_9000000106_00714cztM0_level2.evt modeM0/AS1P01_147T01_9000000106_00714cztM0_level2_quad_clean.evt
Size (bytes)1,246,645,44075,323,520
Size1.2 GB 71.8 MB
Events in quadrant A8,514,962462,625
Events in quadrant B8,848,597464,337
Events in quadrant C9,818,301448,491
Events in quadrant D10,128,083434,769

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300731
B0311101
C0338791
D0348671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6756550.814091%
B6756520.769686%
C6756410.606868%
D67561351.998224%

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 6801 6757 474 474 6.97% 7.01%
B 6801 6757 480 480 7.06% 7.10%
C 6801 6757 585 585 8.60% 8.66%
D 6801 6757 926 926 13.62% 13.70%

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 15 171 188435 353.05 2163 2182 527.5
A 15 53 11442 17.55 2163 2182 527.5
A 10 133 9413 13.71 2163 2182 527.5
B 7 221 150869 279.78 2241 2255 531.2
B 5 247 61255 111.07 2241 2255 531.2
B 0 220 32591 57.11 2241 2255 531.2
C 3 95 444275 780.46 2013 2081 566.6
C 3 31 411057 721.83 2013 2081 566.6
C 3 15 323386 567.09 2013 2081 566.6
D 0 25 1997554 3236.9 1971 2047 616.5
D 6 226 175407 281.21 1971 2047 616.5
D 14 52 158444 253.69 1971 2047 616.5

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