ASTROSAT CZTI

Data Quality Report

Orbit 27825

Creation date: 2024-06-27T19:44:53.560111
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/AS1A10_048T08_9000004020_27825cztM0_level2.evt modeM0/AS1A10_048T08_9000004020_27825cztM0_level2_quad_clean.evt
Size (bytes)577,082,88090,072,000
Size550.3 MB 85.9 MB
Events in quadrant A3,568,217565,060
Events in quadrant B3,921,796566,827
Events in quadrant C4,091,026539,906
Events in quadrant D5,381,829528,326

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156390
B0165010
C0170350
D0211620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7586430.566834%
B75871592.095690%
C75871712.253855%
D75875156.787927%

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 7886 7586 0 0 0.00% 0.00%
B 7887 7587 72 72 0.91% 0.95%
C 7887 7587 27 27 0.34% 0.36%
D 7887 7588 483 483 6.12% 6.37%

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 13 254 12957 64.46 921 899 187.1
A 3 137 9032 43.47 921 899 187.1
A 0 226 7875 37.29 921 899 187.1
B 10 245 244984 1374.08 915 891 177.6
B 0 229 25067 136.09 915 891 177.6
B 12 111 22050 119.11 915 891 177.6
C 3 233 499361 2393.87 879 885 208.2
C 14 238 141233 674.0 879 885 208.2
C 6 112 9073 39.32 879 885 208.2
D 1 52 1938569 9220.28 871 846 210.2
D 2 250 82443 388.26 871 846 210.2
D 2 234 32437 150.32 871 846 210.2

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