ASTROSAT CZTI

Data Quality Report

Orbit 25856

Creation date: 2024-06-27T19:22:09.221771
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/AS1A07_068T01_9000003756_25856cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25856cztM0_level2_quad_clean.evt
Size (bytes)928,923,84094,080,960
Size885.9 MB 89.7 MB
Events in quadrant A6,061,099595,952
Events in quadrant B3,667,229640,349
Events in quadrant C13,795,726482,438
Events in quadrant D4,100,220604,567

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232780
B0156840
C0461980
D0173980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75326789.001593%
B75311051.394237%
C7531374449.714513%
D7531961.274731%

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 8677 7534 460 460 5.30% 6.11%
B 8676 7533 0 0 0.00% 0.00%
C 8676 7533 2860 2860 32.96% 37.97%
D 8676 7533 54 54 0.62% 0.72%

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 13 2570601 14115.54 903 882 182.0
A 13 254 10676 53.8 903 882 182.0
A 3 137 8620 42.51 903 882 182.0
B 15 33 24764 133.61 919 894 178.7
B 12 111 22216 119.35 919 894 178.7
B 11 111 19891 106.33 919 894 178.7
C 7 87 10635535 58907.0 767 770 180.5
C 14 238 119491 657.61 767 770 180.5
C 7 226 24688 132.48 767 770 180.5
D 1 52 426698 2003.24 886 862 212.6
D 12 233 191174 895.27 886 862 212.6
D 7 80 88564 412.57 886 862 212.6

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