ASTROSAT CZTI

Data Quality Report

Orbit 50499

Creation date: 2025-01-28T20:25:12.708148
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/AS1T05_239T01_9000006444_50499cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50499cztM0_level2_quad_clean.evt
Size (bytes)1,112,097,60073,656,000
Size1.0 GB 70.2 MB
Events in quadrant A5,347,033665,639
Events in quadrant B3,497,207737,108
Events in quadrant C14,263,089312,089
Events in quadrant D17,497,8839,436

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208650
B0155130
C0473700
D0568410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72562553.514333%
B7255390.537560%
C7255418157.629221%
D7255717398.869745%

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 7256 7256 200 200 2.76% 2.76%
B 7255 7255 25 25 0.34% 0.34%
C 7255 7255 3973 3973 54.76% 54.76%
D 7254 7254 6763 6763 93.23% 93.23%

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 10 253 907855 4785.91 770 750 189.5
A 4 3 445156 2344.7 770 750 189.5
A 3 44 167004 877.16 770 750 189.5
B 10 246 61507 368.37 772 746 164.9
B 8 128 59118 353.89 772 746 164.9
B 9 218 46883 279.71 772 746 164.9
C 15 235 3795486 23093.75 590 586 164.3
C 15 196 1849692 11252.68 590 586 164.3
C 15 236 931474 5664.89 590 586 164.3
D 7 61 12123407 140299.83 297 285 86.4
D 15 184 1516640 17548.64 297 285 86.4
D 14 67 299778 3466.01 297 285 86.4

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