ASTROSAT CZTI

Data Quality Report

Orbit 28921

Creation date: 2024-06-27T19:57:58.476139
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/AS1A10_048T07_9000004148_28921cztM0_level2.evt modeM0/AS1A10_048T07_9000004148_28921cztM0_level2_quad_clean.evt
Size (bytes)913,921,920187,715,520
Size871.6 MB 179.0 MB
Events in quadrant A5,974,5011,236,294
Events in quadrant B6,183,6501,292,070
Events in quadrant C6,594,0691,197,433
Events in quadrant D8,131,7821,147,294

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249493
B0255283
C0268113
D0320703

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11747870.740615%
B117461481.260003%
C117463012.562574%
D117473432.919894%

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 15632 11750 0 0 0.00% 0.00%
B 15631 11749 3 3 0.02% 0.03%
C 15631 11749 13 13 0.08% 0.11%
D 15632 11750 207 207 1.32% 1.76%

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 13 254 21110 63.94 1546 1518 306.4
A 3 137 14304 41.73 1546 1518 306.4
A 0 226 13038 37.6 1546 1518 306.4
B 5 255 70520 238.33 1553 1516 289.5
B 12 111 34901 115.31 1553 1516 289.5
B 11 111 31445 103.37 1553 1516 289.5
C 3 233 350486 1019.16 1478 1491 342.4
C 14 238 270983 786.99 1478 1491 342.4
C 15 208 90706 260.53 1478 1491 342.4
D 8 195 1854533 5387.12 1464 1431 344.0
D 1 52 594299 1723.51 1464 1431 344.0
D 13 104 86596 247.58 1464 1431 344.0

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