ASTROSAT CZTI

Data Quality Report

Orbit 36106

Creation date: 2022-08-10T11:24:50.151257
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/AS1T04_069T01_9000005158_36106cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36106cztM0_level2_quad_clean.evt
Size (bytes)470,730,24077,135,040
Size448.9 MB 73.6 MB
Events in quadrant A2,762,055499,352
Events in quadrant B3,494,800494,552
Events in quadrant C2,958,053491,694
Events in quadrant D4,650,971448,340

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117973
B0139822
C0122272
D0176592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5748100.173974%
B57481502.609603%
C5748330.574113%
D57485319.237996%

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 7151 5749 1 1 0.01% 0.02%
B 7151 5749 89 89 1.24% 1.55%
C 7151 5749 20 20 0.28% 0.35%
D 7151 5749 421 421 5.89% 7.32%

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 10 83 185956 1384.34 661 649 133.9
A 8 144 8867 61.39 661 649 133.9
A 13 6 7161 48.65 661 649 133.9
B 5 236 491795 3872.83 650 633 126.8
B 5 172 264954 2084.18 650 633 126.8
B 0 190 83967 657.09 650 633 126.8
C 15 214 259916 1741.7 637 642 148.9
C 0 207 135048 902.89 637 642 148.9
C 0 10 66852 444.77 637 642 148.9
D 1 52 1045333 6887.69 616 598 151.7
D 12 6 393941 2593.22 616 598 151.7
D 13 249 276457 1818.67 616 598 151.7

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