ASTROSAT CZTI

Data Quality Report

Orbit 03695

Creation date: 2024-06-27T14:32:32.486116
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/AS1G05_009T01_9000000482_03695cztM0_level2.evt modeM0/AS1G05_009T01_9000000482_03695cztM0_level2_quad_clean.evt
Size (bytes)551,730,24089,144,640
Size526.2 MB 85.0 MB
Events in quadrant A4,629,701530,987
Events in quadrant B4,560,738551,446
Events in quadrant C3,463,977553,319
Events in quadrant D3,543,060538,739

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190623
B0186392
C0157272
D0161912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75514195.548934%
B75511872.476493%
C7551300.397298%
D7551630.834327%

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 7846 7553 307 307 3.91% 4.06%
B 7846 7553 81 81 1.03% 1.07%
C 7846 7553 5 5 0.06% 0.07%
D 7846 7553 32 32 0.41% 0.42%

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 13 251 901289 5009.7 871 850 179.7
A 13 164 187240 1037.0 871 850 179.7
A 0 50 118455 654.31 871 850 179.7
B 15 204 380532 2151.09 902 879 176.5
B 14 167 189750 1070.13 902 879 176.5
B 4 81 163646 922.23 902 879 176.5
C 9 247 40402 192.57 871 873 205.3
C 2 53 11961 54.02 871 873 205.3
C 13 61 7277 31.2 871 873 205.3
D 13 239 101867 474.53 869 843 212.9
D 5 233 78829 366.32 869 843 212.9
D 13 223 33558 153.67 869 843 212.9

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
Veto Counter