ASTROSAT CZTI

Data Quality Report

Orbit 19882

Creation date: 2024-06-27T18:08:16.204099
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/AS1T03_118T01_9000002962_19882cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19882cztM0_level2_quad_clean.evt
Size (bytes)1,289,577,600211,982,400
Size1.2 GB 202.2 MB
Events in quadrant A9,852,1991,320,120
Events in quadrant B8,868,2311,336,295
Events in quadrant C8,794,2761,271,277
Events in quadrant D10,305,7511,233,801

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410003
B0377453
C0375853
D0425583

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182634392.403767%
B182632421.325084%
C182632581.412692%
D182645723.131844%

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 20278 18263 136 136 0.67% 0.74%
B 20278 18263 14 14 0.07% 0.08%
C 20278 18263 2 2 0.01% 0.01%
D 20279 18264 418 418 2.06% 2.29%

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 14 238 1135508 2555.47 2207 2159 443.5
A 5 16 211817 472.74 2207 2159 443.5
A 0 226 18881 37.7 2207 2159 443.5
B 3 64 69016 159.25 2198 2138 420.0
B 7 220 58108 133.27 2198 2138 420.0
B 12 111 52812 120.66 2198 2138 420.0
C 14 238 329721 659.04 2120 2129 497.1
C 9 221 179414 356.66 2120 2129 497.1
C 7 220 17841 31.61 2120 2129 497.1
D 1 20 1347626 2561.57 2145 2083 525.3
D 7 238 337818 639.15 2145 2083 525.3
D 1 52 246303 464.93 2145 2083 525.3

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