ASTROSAT CZTI

Data Quality Report

Orbit 51510

Creation date: 2025-04-06T22:20:40.911417
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_090T01_9000006458_51510cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51510cztM0_level2_quad_clean.evt
Size (bytes)789,431,04081,938,880
Size752.9 MB 78.1 MB
Events in quadrant A5,914,340573,855
Events in quadrant B4,123,924679,871
Events in quadrant C3,789,905612,630
Events in quadrant D14,889,684160,668

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217851
B0165942
C0156171
D0487531

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A650682012.603750%
B65062944.518906%
C65061862.858899%
D6506500076.852136%

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 7581 6507 589 589 7.77% 9.05%
B 7581 6507 92 92 1.21% 1.41%
C 7581 6507 114 114 1.50% 1.75%
D 7581 6507 4930 4930 65.03% 75.76%

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 7 64 751934 4477.67 689 671 167.8
A 4 175 543443 3235.02 689 671 167.8
A 12 3 454090 2702.46 689 671 167.8
B 7 252 279455 1823.3 721 695 152.9
B 0 171 202167 1317.78 721 695 152.9
B 15 52 184727 1203.71 721 695 152.9
C 13 3 277912 1406.22 713 706 197.1
C 15 1 206953 1046.25 713 706 197.1
C 12 247 146284 738.49 713 706 197.1
D 8 176 12133771 102180.31 424 409 118.7
D 8 192 362790 3051.77 424 409 118.7
D 13 84 279758 2352.52 424 409 118.7

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