ASTROSAT CZTI

Data Quality Report

Orbit 30706

Creation date: 2024-06-27T20:18:41.807992
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/AS1A10_058T14_9000004430_30706cztM0_level2.evt modeM0/AS1A10_058T14_9000004430_30706cztM0_level2_quad_clean.evt
Size (bytes)853,992,000106,421,760
Size814.4 MB 101.5 MB
Events in quadrant A4,204,878709,883
Events in quadrant B6,000,303702,686
Events in quadrant C4,238,798674,735
Events in quadrant D10,913,264611,713

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172382
B0232592
C0173472
D0376575

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75152583.433134%
B75152903.858949%
C75163104.124534%
D7515117515.635396%

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 7645 7515 68 68 0.89% 0.90%
B 7645 7515 22 22 0.29% 0.29%
C 7646 7516 39 39 0.51% 0.52%
D 7644 7514 931 931 12.18% 12.39%

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 0 13 515051 2666.33 955 935 192.8
A 13 254 14812 71.97 955 935 192.8
A 3 137 9780 45.87 955 935 192.8
B 6 159 2094295 11678.56 936 912 179.3
B 0 190 64900 356.98 936 912 179.3
B 5 172 64384 354.1 936 912 179.3
C 10 22 417803 1971.98 904 911 211.4
C 14 238 146622 689.24 904 911 211.4
C 3 233 115138 540.31 904 911 211.4
D 8 195 6063525 28554.83 885 862 212.3
D 12 218 482801 2269.91 885 862 212.3
D 13 174 441559 2075.66 885 862 212.3

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