ASTROSAT CZTI

Data Quality Report

Orbit 53529

Creation date: 2025-08-20T20:43:30.079447
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/AS1A14_004T05_9000006502_53529cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53529cztM0_level2_quad_clean.evt
Size (bytes)644,310,72077,253,120
Size614.5 MB 73.7 MB
Events in quadrant A4,346,927575,919
Events in quadrant B3,634,327612,420
Events in quadrant C9,711,057267,128
Events in quadrant D5,714,088483,759

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167111
B0147271
C0328496
D0208301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57203225.629371%
B57202023.531469%
C5720315355.122378%
D572071212.447552%

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 6910 5721 211 211 3.05% 3.69%
B 6910 5721 79 79 1.14% 1.38%
C 6909 5720 2845 2845 41.18% 49.74%
D 6910 5721 615 615 8.90% 10.75%

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 62 893901 5704.05 630 614 156.6
A 0 8 241796 1540.06 630 614 156.6
A 3 63 217948 1387.78 630 614 156.6
B 10 28 439848 3347.53 622 600 131.2
B 2 249 332046 2525.97 622 600 131.2
B 5 185 54154 408.14 622 600 131.2
C 15 217 5857351 52186.49 402 399 112.2
C 15 224 1868718 16647.06 402 399 112.2
C 1 241 167885 1492.33 402 399 112.2
D 6 239 887810 5261.18 594 569 168.6
D 7 96 698965 4141.36 594 569 168.6
D 3 12 674717 3997.57 594 569 168.6

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