ASTROSAT CZTI

Data Quality Report

Orbit 52447

Creation date: 2025-06-27T22:32:43.901039
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_037T01_9000006476_52447cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52447cztM0_level2_quad_clean.evt
Size (bytes)1,188,233,28095,641,920
Size1.1 GB 91.2 MB
Events in quadrant A7,934,058683,339
Events in quadrant B5,237,089829,353
Events in quadrant C10,552,607583,254
Events in quadrant D19,599,189204,012

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02949314
B02153914
C03733629
D064246171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8579129315.071687%
B85782122.471439%
C8573202523.620670%
D8561638674.594089%

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 8859 8582 1179 1179 13.31% 13.74%
B 8860 8584 55 55 0.62% 0.64%
C 8859 8579 1883 1883 21.26% 21.95%
D 8859 8564 6359 6359 71.78% 74.25%

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 8 249 2896125 13866.79 848 826 208.8
A 4 61 986149 4719.12 848 826 208.8
A 13 248 310106 1481.27 848 826 208.8
B 10 254 872555 4567.6 881 850 190.8
B 4 171 297378 1553.76 881 850 190.8
B 12 32 111606 580.34 881 850 190.8
C 15 231 3565353 16621.3 784 778 214.5
C 15 224 1201884 5600.65 784 778 214.5
C 15 248 611989 2850.02 784 778 214.5
D 2 153 7656179 51098.83 519 494 149.8
D 6 42 2938003 19606.77 519 494 149.8
D 12 17 2481389 16559.05 519 494 149.8

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