ASTROSAT CZTI

Data Quality Report

Orbit 17594

Creation date: 2024-06-27T17:38:23.918403
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_056T01_9000002604_17594cztM0_level2.evt modeM0/AS1A05_056T01_9000002604_17594cztM0_level2_quad_clean.evt
Size (bytes)610,128,000112,288,320
Size581.9 MB 107.1 MB
Events in quadrant A5,436,267715,572
Events in quadrant B3,766,313731,926
Events in quadrant C4,777,609691,934
Events in quadrant D3,940,267689,789

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218582
B0168062
C0198602
D0177872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82164074.953749%
B8216430.523369%
C8216790.961538%
D82161591.935248%

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 8786 8217 252 252 2.87% 3.07%
B 8786 8217 0 0 0.00% 0.00%
C 8786 8217 0 0 0.00% 0.00%
D 8786 8217 120 120 1.37% 1.46%

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 14 237 1779365 9261.33 949 930 192.0
A 0 13 10321 48.9 949 930 192.0
A 0 226 8254 38.14 949 930 192.0
B 12 111 22845 119.06 959 937 184.0
B 11 111 19584 101.34 959 937 184.0
B 14 111 16838 86.42 959 937 184.0
C 3 233 986288 4566.6 912 916 215.8
C 14 238 139791 643.6 912 916 215.8
C 5 218 67581 308.95 912 916 215.8
D 1 52 271703 1201.29 918 890 225.4
D 13 189 125653 553.43 918 890 225.4
D 2 120 62875 274.96 918 890 225.4

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