ASTROSAT CZTI

Data Quality Report

Orbit 50976

Creation date: 2025-03-01T23:10:08.990926
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_001T02_9000006452_50976cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50976cztM0_level2_quad_clean.evt
Size (bytes)760,245,12093,764,160
Size725.0 MB 89.4 MB
Events in quadrant A11,040,657445,931
Events in quadrant B4,333,242709,785
Events in quadrant C6,034,925598,336
Events in quadrant D6,166,500575,900

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377670
B0181970
C0230550
D0235310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7311280638.380523%
B73113765.142935%
C731174610.203802%
D73116649.082205%

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 7311 7311 2505 2505 34.26% 34.26%
B 7311 7311 245 245 3.35% 3.35%
C 7311 7311 656 656 8.97% 8.97%
D 7311 7311 601 601 8.22% 8.22%

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 14 254 7165047 45260.69 624 606 158.3
A 4 3 319708 2015.9 624 606 158.3
A 8 43 226143 1424.81 624 606 158.3
B 4 206 593122 3717.84 749 721 159.3
B 4 81 303890 1902.65 749 721 159.3
B 8 128 99574 620.39 749 721 159.3
C 15 147 693864 3544.9 716 710 195.5
C 13 49 592824 3028.17 716 710 195.5
C 0 177 571071 2916.92 716 710 195.5
D 8 176 1346207 6740.91 716 688 199.6
D 10 181 932655 4669.05 716 688 199.6
D 2 216 155285 774.51 716 688 199.6

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