ASTROSAT CZTI

Data Quality Report

Orbit 36084

Creation date: 2022-08-10T07:06:37.870775
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_36084cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36084cztM0_level2_quad_clean.evt
Size (bytes)1,330,750,080239,823,360
Size1.2 GB 228.7 MB
Events in quadrant A8,178,3391,580,721
Events in quadrant B10,081,2651,558,963
Events in quadrant C9,034,9341,524,462
Events in quadrant D11,832,1711,399,870

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357636
B0411154
C0380334
D0469014

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17384220.126553%
B173845373.089047%
C173842091.202255%
D1738410906.270133%

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 37606 17388 2 2 0.01% 0.01%
B 37606 17388 407 407 1.08% 2.34%
C 37606 17388 153 153 0.41% 0.88%
D 37606 17388 1002 1002 2.66% 5.76%

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 469224 1181.55 1970 1930 395.5
A 9 143 64018 156.99 1970 1930 395.5
A 13 6 25451 59.47 1970 1930 395.5
B 5 172 1579344 4270.37 1929 1882 369.4
B 0 190 210514 564.79 1929 1882 369.4
B 5 255 175000 468.65 1929 1882 369.4
C 15 214 714539 1624.68 1880 1892 438.6
C 0 10 483010 1096.84 1880 1892 438.6
C 15 208 474886 1078.32 1880 1892 438.6
D 1 52 1981229 4426.66 1824 1774 447.2
D 12 227 715575 1596.27 1824 1774 447.2
D 12 6 625416 1394.65 1824 1774 447.2

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