ASTROSAT CZTI

Data Quality Report

Orbit 50705

Creation date: 2025-02-11T18:22:01.361875
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/AS1T05_241T01_9000006446_50705cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50705cztM0_level2_quad_clean.evt
Size (bytes)2,011,541,760233,340,480
Size1.9 GB 222.5 MB
Events in quadrant A15,278,1931,614,599
Events in quadrant B10,017,8131,843,171
Events in quadrant C29,375,273949,304
Events in quadrant D18,344,9381,366,746

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0577082
B0433322
C01002382
D0676372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1871916578.851969%
B187197393.947860%
C18719828044.233132%
D18719249813.344730%

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 19659 18721 1507 1507 7.67% 8.05%
B 19659 18721 272 272 1.38% 1.45%
C 19659 18717 5869 5869 29.85% 31.36%
D 19659 18721 2114 2114 10.75% 11.29%

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 12 80 3773745 7632.13 1985 1931 494.2
A 4 3 537196 1083.09 1985 1931 494.2
A 8 47 520147 1048.59 1985 1931 494.2
B 2 249 309897 726.87 1991 1917 423.7
B 4 216 233602 546.8 1991 1917 423.7
B 0 213 231916 542.82 1991 1917 423.7
C 0 193 8274289 20136.86 1489 1479 410.8
C 5 10 4838832 11774.61 1489 1479 410.8
C 15 148 2537935 6173.99 1489 1479 410.8
D 7 60 2266603 4331.46 1868 1804 522.9
D 15 108 1553461 2967.57 1868 1804 522.9
D 2 249 1299493 2481.85 1868 1804 522.9

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