ASTROSAT CZTI

Data Quality Report

Orbit 34928

Creation date: 2022-03-15T03:18:09.649996
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/AS1A11_086T01_9000005002_34928cztM0_level2.evt modeM0/AS1A11_086T01_9000005002_34928cztM0_level2_quad_clean.evt
Size (bytes)414,789,12077,814,720
Size395.6 MB 74.2 MB
Events in quadrant A3,272,651439,332
Events in quadrant B2,936,590531,799
Events in quadrant C2,826,522534,308
Events in quadrant D3,186,494500,391

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131243
B0117672
C0114282
D0128722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499457211.453744%
B49941032.062475%
C4994340.680817%
D4994440.881057%

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 7027 4994 121 121 1.72% 2.42%
B 7028 4995 73 73 1.04% 1.46%
C 7028 4995 25 25 0.36% 0.50%
D 7028 4995 36 36 0.51% 0.72%

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 1131211 10626.39 537 529 106.4
A 10 83 48885 454.46 537 529 106.4
A 13 254 8053 70.71 537 529 106.4
B 5 172 333926 2955.05 600 587 112.8
B 5 255 200148 1769.11 600 587 112.8
B 0 245 36834 321.33 600 587 112.8
C 15 214 212027 1537.81 602 610 137.5
C 0 10 207970 1508.3 602 610 137.5
C 2 16 34355 245.45 602 610 137.5
D 8 195 627599 4367.55 596 581 143.6
D 13 249 46906 322.68 596 581 143.6
D 2 250 42275 290.42 596 581 143.6

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