ASTROSAT CZTI

Data Quality Report

Orbit 35106

Creation date: 2022-03-31T14:56:49.558536
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/AS1T05_015T01_9000005026_35106cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35106cztM0_level2_quad_clean.evt
Size (bytes)535,461,12087,776,640
Size510.7 MB 83.7 MB
Events in quadrant A4,842,243541,883
Events in quadrant B2,910,548597,415
Events in quadrant C2,933,392592,979
Events in quadrant D5,171,824554,687

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180993
B0120412
C0117512
D0191902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A529874013.967535%
B5298561.057003%
C52981202.265006%
D5298851.604379%

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 7000 5299 590 590 8.43% 11.13%
B 7000 5299 29 29 0.41% 0.55%
C 7000 5299 79 79 1.13% 1.49%
D 7000 5299 56 56 0.80% 1.06%

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 15 169 2508515 21205.93 580 569 118.3
A 10 83 78137 655.88 580 569 118.3
A 13 6 9355 74.29 580 569 118.3
B 5 172 194838 1652.4 616 599 117.5
B 0 189 75889 640.5 616 599 117.5
B 5 255 64424 542.96 616 599 117.5
C 0 10 298488 2118.77 606 610 140.6
C 15 214 219074 1553.91 606 610 140.6
C 12 250 23997 166.35 606 610 140.6
D 8 195 2538841 17320.55 602 585 146.5
D 2 250 75281 509.71 602 585 146.5
D 13 249 47104 317.43 602 585 146.5

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