ASTROSAT CZTI

Data Quality Report

Orbit 48612

Creation date: 2024-09-23T18:18:37.334342
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/AS1A13_037T01_9000006436_48612cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48612cztM0_level2_quad_clean.evt
Size (bytes)681,330,240131,313,600
Size649.8 MB 125.2 MB
Events in quadrant A9,403,138863,545
Events in quadrant B7,352,330805,434
Events in quadrant C3,702,535892,257
Events in quadrant D4,082,777805,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341630
B0280730
C0178100
D0187430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87715185.905826%
B8771131514.992589%
C877140.045605%
D8771410.467450%

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 8771 8771 321 321 3.66% 3.66%
B 8770 8770 638 638 7.27% 7.27%
C 8771 8771 0 0 0.00% 0.00%
D 8771 8771 31 31 0.35% 0.35%

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 83 4611402 23607.03 934 913 195.3
A 13 248 1172007 5996.34 934 913 195.3
A 13 254 16240 78.48 934 913 195.3
B 12 16 3694670 20769.77 903 872 177.8
B 0 197 34608 189.69 903 872 177.8
B 5 255 30274 165.32 903 872 177.8
C 3 233 17495 74.78 939 941 221.4
C 12 250 10476 43.07 939 941 221.4
C 1 241 8216 32.86 939 941 221.4
D 10 199 215308 925.57 926 894 231.7
D 2 165 160768 690.13 926 894 231.7
D 6 252 75190 320.72 926 894 231.7

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