ASTROSAT CZTI

Data Quality Report

Orbit 42540

Creation date: 2024-06-27T22:41:24.072238
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_002T01_9000005810_42540cztM0_level2.fits modeM0/AS1A09_002T01_9000005810_42540cztM0_level2_quad_clean.evt
Size (bytes)573,716,160155,445,120
Size547.1 MB 148.2 MB
Events in quadrant A4,976,6331,040,401
Events in quadrant B4,315,2851,065,271
Events in quadrant C4,473,8641,019,661
Events in quadrant D6,713,090904,516

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206642
B0200212
C0198402
D0272792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9765190.194572%
B9765340.348182%
C9765180.184332%
D97655035.151050%

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 11107 9766 5 5 0.05% 0.05%
B 11107 9766 16 16 0.14% 0.16%
C 11107 9766 5 5 0.05% 0.05%
D 11107 9766 412 412 3.71% 4.22%

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 10 83 861781 4012.46 1047 1026 214.5
A 2 79 28127 126.33 1047 1026 214.5
A 13 248 20948 92.87 1047 1026 214.5
B 0 245 113696 565.82 1039 1010 199.2
B 5 255 65247 322.55 1039 1010 199.2
B 5 172 47868 235.28 1039 1010 199.2
C 15 214 398109 1669.45 1021 1025 237.9
C 14 254 37520 153.43 1021 1025 237.9
C 5 250 32986 134.37 1021 1025 237.9
D 2 249 1385529 5677.97 998 969 243.8
D 2 16 649388 2659.11 998 969 243.8
D 1 47 266128 1087.4 998 969 243.8

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