ASTROSAT CZTI

Data Quality Report

Orbit 27065

Creation date: 2024-06-27T19:36:04.305352
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/AS1A09_120T02_9000003904_27065cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27065cztM0_level2_quad_clean.evt
Size (bytes)737,910,72070,977,600
Size703.7 MB 67.7 MB
Events in quadrant A4,192,780460,684
Events in quadrant B7,796,465413,256
Events in quadrant C3,599,724451,887
Events in quadrant D6,322,975372,858

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166500
B0273930
C0147140
D0232000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64431622.514357%
B6443201731.305293%
C64431382.141859%
D644391014.123855%

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 7563 6444 62 62 0.82% 0.96%
B 7563 6444 1741 1741 23.02% 27.02%
C 7563 6444 10 10 0.13% 0.16%
D 7563 6444 916 916 12.11% 14.21%

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 14 235 713491 4092.19 878 862 174.1
A 6 16 86801 493.49 878 862 174.1
A 13 254 10415 54.86 878 862 174.1
B 0 189 4663938 32334.43 764 748 144.2
B 10 246 104050 716.29 764 748 144.2
B 12 111 16699 110.6 764 748 144.2
C 14 238 139487 696.86 854 865 198.9
C 15 208 128356 640.9 854 865 198.9
C 13 61 6044 26.04 854 865 198.9
D 1 52 2954439 15439.01 813 796 191.3
D 2 250 243506 1268.67 813 796 191.3
D 2 234 28702 145.87 813 796 191.3

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