ASTROSAT CZTI

Data Quality Report

Orbit 51163

Creation date: 2025-03-15T08:07:30.087613
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_51163cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51163cztM0_level2_quad_clean.evt
Size (bytes)625,559,04079,269,120
Size596.6 MB 75.6 MB
Events in quadrant A5,919,721498,857
Events in quadrant B3,801,549582,331
Events in quadrant C5,382,031498,914
Events in quadrant D7,596,930407,668

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021913186
B015709155
C020337231
D027216545

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A590373512.451296%
B59112614.415497%
C58865098.647638%
D5867123120.981762%

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 6832 5942 652 652 9.54% 10.97%
B 6833 5941 119 119 1.74% 2.00%
C 6833 5941 487 487 7.13% 8.20%
D 6833 5912 1253 1253 18.34% 21.19%

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 14 254 1797195 12456.88 583 570 144.2
A 12 3 824485 5712.61 583 570 144.2
A 4 4 250761 1734.7 583 570 144.2
B 5 185 333680 2579.41 601 580 129.1
B 4 171 310174 2397.39 601 580 129.1
B 10 60 192447 1485.75 601 580 129.1
C 4 12 658194 4246.36 565 560 154.9
C 12 247 510737 3294.23 565 560 154.9
C 1 60 368870 2378.19 565 560 154.9
D 8 176 4170980 27244.71 539 518 153.1
D 12 2 604595 3946.3 539 518 153.1
D 2 216 260780 1700.23 539 518 153.1

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