ASTROSAT CZTI

Data Quality Report

Orbit 12505

Creation date: 2024-06-27T16:28:21.023130
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/AS1A04_174T01_9000001850_12505cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12505cztM0_level2_quad_clean.evt
Size (bytes)119,073,60032,515,200
Size113.6 MB 31.0 MB
Events in quadrant A884,309222,176
Events in quadrant B881,578229,086
Events in quadrant C692,755222,947
Events in quadrant D1,049,827205,905

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036030
B034760
C028560
D040410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139870.500715%
B1398151.072961%
C139800.000000%
D1398352.503577%

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 1399 1399 1 1 0.07% 0.07%
B 1399 1399 12 12 0.86% 0.86%
C 1399 1399 0 0 0.00% 0.00%
D 1399 1399 30 30 2.14% 2.14%

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 1 162 68232 1783.54 177 174 38.2
A 1 178 40593 1059.23 177 174 38.2
A 1 161 34368 896.09 177 174 38.2
B 4 239 148980 4146.52 180 176 35.9
B 11 51 16764 462.24 180 176 35.9
B 0 230 7669 208.8 180 176 35.9
C 14 234 11400 265.38 174 176 42.3
C 13 61 1365 28.11 174 176 42.3
C 14 67 595 9.91 174 176 42.3
D 1 52 249543 5771.89 169 165 43.2
D 13 104 85637 1978.26 169 165 43.2
D 13 249 19925 457.35 169 165 43.2

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