ASTROSAT CZTI

Data Quality Report

Orbit 17768

Creation date: 2024-06-27T17:41:30.279520
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/AS1T03_070T09_9000002648_17768cztM0_level2.evt modeM0/AS1T03_070T09_9000002648_17768cztM0_level2_quad_clean.evt
Size (bytes)222,520,32048,075,840
Size212.2 MB 45.8 MB
Events in quadrant A1,368,555313,986
Events in quadrant B1,621,432316,968
Events in quadrant C2,082,977298,019
Events in quadrant D1,449,956302,641

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063130
B069780
C082490
D065720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A315220.063452%
B3153130.412306%
C31532206.977482%
D315380.253727%

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 3152 3152 0 0 0.00% 0.00%
B 3153 3153 7 7 0.22% 0.22%
C 3153 3153 165 165 5.23% 5.23%
D 3153 3153 10 10 0.32% 0.32%

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 15 174 4832 61.13 354 347 73.4
A 0 226 3198 38.86 354 347 73.4
A 12 194 2660 31.52 354 347 73.4
B 10 245 93185 1375.17 351 343 67.5
B 7 220 73653 1085.86 351 343 67.5
B 4 142 32626 478.17 351 343 67.5
C 4 254 694390 8948.69 328 331 77.6
C 14 238 51006 653.37 328 331 77.6
C 5 218 27614 351.77 328 331 77.6
D 7 238 91229 1098.01 342 334 82.8
D 2 152 22517 267.97 342 334 82.8
D 2 165 15375 181.7 342 334 82.8

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