ASTROSAT CZTI

Data Quality Report

Orbit 43881

Creation date: 2024-06-27T22:56:49.713676
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/AS1C07_001T10_9000005910_43881cztM0_level2.fits modeM0/AS1C07_001T10_9000005910_43881cztM0_level2_quad_clean.evt
Size (bytes)445,420,80093,401,280
Size424.8 MB 89.1 MB
Events in quadrant A4,500,029634,206
Events in quadrant B2,739,658680,873
Events in quadrant C2,522,162634,343
Events in quadrant D6,279,907477,820

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170861
B0120741
C0117811
D0226851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57363445.997211%
B5737530.923828%
C5737140.244030%
D5737116920.376503%

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 6866 5737 270 270 3.93% 4.71%
B 6867 5738 9 9 0.13% 0.16%
C 6867 5738 4 4 0.06% 0.07%
D 6867 5738 1114 1114 16.22% 19.41%

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 15 223 1121500 8563.84 635 621 130.9
A 10 83 856399 6538.39 635 621 130.9
A 7 3 29010 216.9 635 621 130.9
B 0 200 87763 712.55 637 619 122.3
B 4 170 49179 397.06 637 619 122.3
B 0 213 19413 153.67 637 619 122.3
C 3 233 42706 293.58 615 619 143.4
C 2 14 26337 179.4 615 619 143.4
C 14 254 15949 106.94 615 619 143.4
D 5 235 2064838 14517.21 562 543 142.2
D 7 80 619108 4350.07 562 543 142.2
D 1 52 456321 3205.27 562 543 142.2

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