ASTROSAT CZTI

Data Quality Report

Orbit 35387

Creation date: 2022-04-21T11:42:14.141522
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_099T01_9000005068_35387cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35387cztM0_level2_quad_clean.evt
Size (bytes)2,690,147,520185,662,080
Size2.5 GB 177.1 MB
Events in quadrant A8,660,2431,322,169
Events in quadrant B35,790,896730,627
Events in quadrant C10,446,9251,281,882
Events in quadrant D25,342,3761,016,592

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379195
B01187854
C0422244
D0877384

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18377370.201339%
B183771239867.464766%
C183772851.550852%
D18377517628.165642%

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 31371 18381 11 11 0.04% 0.06%
B 31371 18381 10324 10324 32.91% 56.17%
C 31371 18381 205 205 0.65% 1.12%
D 31371 18381 5430 5430 17.31% 29.54%

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 326938 760.09 2117 2073 427.4
A 9 143 76661 174.51 2117 2073 427.4
A 13 6 46623 104.23 2117 2073 427.4
B 4 251 28617838 109829.92 1371 1335 260.6
B 5 236 642063 2459.11 1371 1335 260.6
B 5 172 545416 2088.18 1371 1335 260.6
C 0 10 892178 1879.13 2049 2067 473.7
C 15 214 745074 1568.58 2049 2067 473.7
C 0 207 601008 1264.44 2049 2067 473.7
D 7 80 14104064 30859.99 1853 1798 457.0
D 12 235 1376035 3007.24 1853 1798 457.0
D 10 118 752323 1642.37 1853 1798 457.0

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