ASTROSAT CZTI

Data Quality Report

Orbit 16966

Creation date: 2024-06-27T17:30:09.357676
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_188T01_9000002520_16966cztM0_level2.evt modeM0/AS1A05_188T01_9000002520_16966cztM0_level2_quad_clean.evt
Size (bytes)584,055,36084,821,760
Size557.0 MB 80.9 MB
Events in quadrant A3,060,804554,455
Events in quadrant B7,153,307485,238
Events in quadrant C3,630,288544,919
Events in quadrant D3,405,903533,303

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131711
B0253711
C0146081
D0139411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64491031.597147%
B6450188029.147287%
C64501432.217054%
D6450951.472868%

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 7370 6451 0 0 0.00% 0.00%
B 7371 6452 1317 1317 17.87% 20.41%
C 7371 6452 0 0 0.00% 0.00%
D 7371 6452 9 9 0.12% 0.14%

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 0 226 7255 40.34 794 777 160.6
A 12 194 5772 31.11 794 777 160.6
A 15 174 5761 31.04 794 777 160.6
B 3 64 4409259 34941.36 664 645 126.2
B 15 35 41151 321.04 664 645 126.2
B 0 229 28034 217.08 664 645 126.2
C 3 233 494871 2759.57 772 778 179.0
C 14 238 118519 657.6 772 778 179.0
C 13 61 5523 26.5 772 778 179.0
D 1 52 311238 1615.15 786 764 192.2
D 10 70 43028 219.87 786 764 192.2
D 15 145 27714 140.2 786 764 192.2

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