ASTROSAT CZTI

Data Quality Report

Orbit 45277

Creation date: 2024-06-27T23:11:51.850631
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_024T03_9000006064_45277cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45277cztM0_level2_quad_clean.evt
Size (bytes)578,275,200125,625,600
Size551.5 MB 119.8 MB
Events in quadrant A6,367,032845,087
Events in quadrant B3,806,963878,020
Events in quadrant C4,380,685812,466
Events in quadrant D6,235,884716,371

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244626
B0167590
C0187730
D0239748

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79351321.663516%
B7937790.995338%
C79382332.935248%
D79375577.017765%

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 7937 7936 37 37 0.47% 0.47%
B 7937 7937 14 14 0.18% 0.18%
C 7938 7938 216 216 2.72% 2.72%
D 7938 7937 487 487 6.14% 6.14%

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 10 83 2731615 14697.97 896 877 185.8
A 13 248 163183 873.6 896 877 185.8
A 3 137 10583 52.24 896 877 185.8
B 5 32 37186 205.64 896 872 176.6
B 15 36 36453 201.49 896 872 176.6
B 0 183 29040 159.51 896 872 176.6
C 14 254 613269 3019.69 865 867 202.8
C 12 2 341346 1678.86 865 867 202.8
C 3 233 22772 108.01 865 867 202.8
D 13 249 1377150 6405.85 849 822 214.9
D 5 222 433956 2015.94 849 822 214.9
D 2 249 300646 1395.47 849 822 214.9

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