ASTROSAT CZTI

Data Quality Report

Orbit 25791

Creation date: 2024-06-27T19:21:27.951815
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_25791cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25791cztM0_level2_quad_clean.evt
Size (bytes)620,536,320103,374,720
Size591.8 MB 98.6 MB
Events in quadrant A7,755,675601,088
Events in quadrant B3,313,937721,070
Events in quadrant C3,293,185675,208
Events in quadrant D3,987,577677,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274030
B0140380
C0140540
D0163150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6530209232.036753%
B6530661.010720%
C65311021.561782%
D65311041.592405%

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 7635 6530 1853 1853 24.27% 28.38%
B 7635 6530 1 1 0.01% 0.02%
C 7636 6531 2 2 0.03% 0.03%
D 7636 6531 44 44 0.58% 0.67%

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 4859476 32326.18 750 737 150.3
A 13 254 8644 52.61 750 737 150.3
A 3 137 6639 39.27 750 737 150.3
B 12 111 18956 113.99 835 816 159.1
B 11 111 17018 101.82 835 816 159.1
B 14 111 15102 89.77 835 816 159.1
C 14 238 127590 680.21 798 802 186.4
C 0 207 30595 159.84 798 802 186.4
C 3 233 25615 133.12 798 802 186.4
D 1 52 762691 3882.27 818 798 196.2
D 8 195 71288 359.19 818 798 196.2
D 2 234 27875 137.97 818 798 196.2

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