ASTROSAT CZTI

Data Quality Report

Orbit 27946

Creation date: 2024-06-27T19:46:16.525073
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_016T01_9000004034_27946cztM0_level2.evt modeM0/AS1A10_016T01_9000004034_27946cztM0_level2_quad_clean.evt
Size (bytes)2,476,918,080371,471,040
Size2.3 GB 354.3 MB
Events in quadrant A13,693,6582,408,050
Events in quadrant B14,520,1252,434,056
Events in quadrant C14,278,8722,322,424
Events in quadrant D30,574,2162,099,562

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0595250
B0618150
C0609120
D01109620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A289001900.657439%
B289013231.117608%
C289014791.657382%
D28900461415.965398%

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 32115 28902 5 5 0.02% 0.02%
B 32116 28902 20 20 0.06% 0.07%
C 32116 28901 5 5 0.02% 0.02%
D 32115 28900 4036 4036 12.57% 13.97%

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 13 254 46902 61.37 3542 3471 707.7
A 3 137 34796 44.26 3542 3471 707.7
A 0 226 30310 37.92 3542 3471 707.7
B 0 230 314551 470.01 3504 3420 662.0
B 10 245 230956 343.73 3504 3420 662.0
B 0 229 125408 184.28 3504 3420 662.0
C 14 238 555596 695.9 3377 3395 793.5
C 3 233 476991 596.84 3377 3395 793.5
C 2 16 39855 45.95 3377 3395 793.5
D 1 52 13843358 18289.41 3176 3091 756.7
D 8 195 2557574 3375.66 3176 3091 756.7
D 2 250 1601959 2112.85 3176 3091 756.7

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