ASTROSAT CZTI

Data Quality Report

Orbit 20085

Creation date: 2024-06-27T18:11:04.938455
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_180T01_9000002992_20085cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20085cztM0_level2_quad_clean.evt
Size (bytes)2,201,336,640395,170,560
Size2.1 GB 376.9 MB
Events in quadrant A14,859,1372,577,421
Events in quadrant B14,611,8642,576,942
Events in quadrant C16,503,5102,421,790
Events in quadrant D18,720,2612,387,025

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05020
B05424
C0409
D05121

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0686485952
B0675945845
C0735055775
D0835088438

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065242
B065855
C066357
D065845

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A291404131.417296%
B291734311.477393%
C2920113934.770385%
D2887111143.858543%

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 35078 31636 82 82 0.23% 0.26%
B 35078 31666 32 32 0.09% 0.10%
C 35078 31707 535 535 1.53% 1.69%
D 35078 31637 704 704 2.01% 2.23%

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 462378 630.74 3624 3557 727.4
A 4 2 335805 456.74 3624 3557 727.4
A 13 254 34885 43.07 3624 3557 727.4
B 4 80 154171 220.61 3597 3513 682.9
B 0 183 106963 151.48 3597 3513 682.9
B 12 111 83090 116.52 3597 3513 682.9
C 4 254 2632468 3291.42 3414 3446 798.7
C 14 238 535293 665.85 3414 3446 798.7
C 13 61 23738 25.4 3414 3446 798.7
D 1 52 3909458 4690.67 3449 3358 832.7
D 7 238 818913 979.36 3449 3358 832.7
D 12 218 476082 567.67 3449 3358 832.7

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