ASTROSAT CZTI

Data Quality Report

Orbit 16943

Creation date: 2024-06-27T17:29:49.496817
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/AS1A05_206T01_9000002518_16943cztM0_level2.evt modeM0/AS1A05_206T01_9000002518_16943cztM0_level2_quad_clean.evt
Size (bytes)1,405,514,880276,384,960
Size1.3 GB 263.6 MB
Events in quadrant A12,119,2601,787,305
Events in quadrant B9,719,6791,821,261
Events in quadrant C9,481,3031,750,358
Events in quadrant D9,984,7071,726,407

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0488405
B0412054
C0404344
D0427224

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1866014917.990354%
B186613842.057768%
C186613131.677295%
D186613742.004180%

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 20861 18665 864 864 4.14% 4.63%
B 20862 18666 62 62 0.30% 0.33%
C 20862 18666 2 2 0.01% 0.01%
D 20862 18666 140 140 0.67% 0.75%

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 15 174 3633121 8550.69 2098 2045 424.7
A 12 189 391894 918.04 2098 2045 424.7
A 0 23 31546 69.47 2098 2045 424.7
B 15 35 394311 952.46 2174 2116 411.8
B 3 64 170401 408.69 2174 2116 411.8
B 0 229 106209 252.79 2174 2116 411.8
C 3 233 976305 2011.28 2085 2095 484.4
C 14 238 321501 659.42 2085 2095 484.4
C 14 225 24046 45.32 2085 2095 484.4
D 1 52 1210105 2351.18 2115 2050 513.8
D 10 199 255127 492.55 2115 2050 513.8
D 15 0 137461 263.54 2115 2050 513.8

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