ASTROSAT CZTI

Data Quality Report

Orbit 18362

Creation date: 2024-06-27T17:48:50.814949
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/AS1A06_006T01_9000002720_18362cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18362cztM0_level2_quad_clean.evt
Size (bytes)1,303,548,480223,735,680
Size1.2 GB 213.4 MB
Events in quadrant A8,491,2361,410,373
Events in quadrant B9,513,4181,407,290
Events in quadrant C9,513,1591,369,664
Events in quadrant D10,741,8391,345,962

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373983
B0399638
C0400853
D0441603

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18034850.471332%
B180332731.513891%
C180333622.007431%
D180334752.634060%

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 20089 18037 2 2 0.01% 0.01%
B 20088 18036 118 118 0.59% 0.65%
C 20088 18036 139 139 0.69% 0.77%
D 20088 18036 354 354 1.76% 1.96%

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 4 2 161901 366.04 2156 2110 436.5
A 11 29 29938 63.75 2156 2110 436.5
A 0 226 19011 38.72 2156 2110 436.5
B 3 64 447235 1089.57 2151 2096 408.5
B 7 220 330281 803.3 2151 2096 408.5
B 0 189 124160 298.78 2151 2096 408.5
C 0 207 832050 1727.7 2056 2075 480.4
C 3 233 335305 693.66 2056 2075 480.4
C 14 238 312418 646.02 2056 2075 480.4
D 1 52 2393139 4697.98 2081 2016 509.0
D 12 110 274844 536.04 2081 2016 509.0
D 2 234 83127 159.36 2081 2016 509.0

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