ASTROSAT CZTI

Data Quality Report

Orbit 51208

Creation date: 2025-03-17T15:03:41.923711
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_001T01_9000006454_51208cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51208cztM0_level2_quad_clean.evt
Size (bytes)709,139,52092,928,960
Size676.3 MB 88.6 MB
Events in quadrant A4,136,879647,500
Events in quadrant B6,878,571571,746
Events in quadrant C8,686,260522,431
Events in quadrant D5,997,638576,712

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173641
B0253931
C0307911
D0229351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71101482.081575%
B7110161922.770745%
C7110156822.053446%
D71104095.752461%

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 7190 7111 69 69 0.96% 0.97%
B 7190 7111 968 968 13.46% 13.61%
C 7190 7111 1340 1340 18.64% 18.84%
D 7190 7111 400 400 5.56% 5.63%

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 3 130 203501 1092.13 746 728 185.7
A 13 248 160802 862.16 746 728 185.7
A 9 160 120884 647.16 746 728 185.7
B 12 32 2064912 14549.51 660 635 141.9
B 5 172 1289642 9085.23 660 635 141.9
B 8 128 184706 1297.38 660 635 141.9
C 4 12 2708982 14984.2 656 653 180.7
C 10 171 1233749 6822.27 656 653 180.7
C 9 38 892760 4935.7 656 653 180.7
D 2 62 1059709 5337.03 702 677 198.4
D 3 12 762444 3838.95 702 677 198.4
D 8 176 305794 1537.65 702 677 198.4

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