ASTROSAT CZTI

Data Quality Report

Orbit 51006

Creation date: 2025-03-03T23:12:37.644663
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_51006cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51006cztM0_level2_quad_clean.evt
Size (bytes)687,870,72098,573,760
Size656.0 MB 94.0 MB
Events in quadrant A7,998,844601,289
Events in quadrant B5,033,649710,208
Events in quadrant C6,284,155571,394
Events in quadrant D5,581,533593,456

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289230
B0201441
C0238100
D0216880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7297106114.540222%
B72963444.714912%
C729791212.498287%
D72972753.768672%

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 7297 7297 1014 1014 13.90% 13.90%
B 7296 7296 196 196 2.69% 2.69%
C 7297 7297 770 770 10.55% 10.55%
D 7297 7297 250 250 3.43% 3.43%

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 2696061 14757.68 730 712 182.6
A 12 80 812188 4443.02 730 712 182.6
A 4 249 279970 1529.0 730 712 182.6
B 4 171 544311 3427.85 743 719 158.6
B 12 32 510064 3211.89 743 719 158.6
B 4 81 268364 1687.75 743 719 158.6
C 13 3 2103151 10946.52 688 683 192.1
C 15 147 316056 1641.99 688 683 192.1
C 15 224 285798 1484.45 688 683 192.1
D 8 176 402166 1959.45 728 699 204.9
D 2 216 365588 1780.92 728 699 204.9
D 15 108 326307 1589.2 728 699 204.9

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