ASTROSAT CZTI

Data Quality Report

Orbit 36173

Creation date: 2022-06-28T12:07:42.982085
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_059T08_9000005160_36173cztM0_level2.evt modeM0/AS1A11_059T08_9000005160_36173cztM0_level2_quad_clean.evt
Size (bytes)24,361,9204,403,520
Size23.2 MB 4.2 MB
Events in quadrant A151,04928,617
Events in quadrant B175,83028,770
Events in quadrant C264,66326,329
Events in quadrant D130,30527,941

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05891
B06511
C09221
D05171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18142.209945%
B1812513.812155%
C1815731.491713%
D18110.552486%

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 181 181 3 3 1.66% 1.66%
B 181 181 16 16 8.84% 8.84%
C 181 181 46 46 25.41% 25.41%
D 181 181 0 0 0.00% 0.00%

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 36861 5213.69 25 24 7.1
A 9 143 14929 2109.57 25 24 7.1
A 10 67 1842 257.31 25 24 7.1
B 5 172 57787 8649.68 24 23 6.7
B 4 171 16823 2515.66 24 23 6.7
B 0 190 2063 305.47 24 23 6.7
C 0 10 115670 15780.15 23 23 7.3
C 1 23 48239 6579.12 23 23 7.3
C 15 214 9808 1335.17 23 23 7.3
D 2 250 15483 2034.03 24 23 7.6
D 13 171 5993 785.46 24 23 7.6
D 12 6 4323 565.74 24 23 7.6

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