ASTROSAT CZTI

Data Quality Report

Orbit 44812

Creation date: 2024-06-27T23:07:28.469861
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_024T02_9000006026_44812cztM0_level2.fits modeM0/AS1A13_024T02_9000006026_44812cztM0_level2_quad_clean.evt
Size (bytes)940,308,480117,889,920
Size896.7 MB 112.4 MB
Events in quadrant A13,956,714555,480
Events in quadrant B5,015,764863,916
Events in quadrant C3,727,246867,882
Events in quadrant D11,465,203703,512

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0472662
B0209652
C0175012
D0399372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8317332840.014428%
B83185736.888675%
C8318410.492907%
D8318122814.763164%

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 8426 8316 2929 2929 34.76% 35.22%
B 8428 8321 421 421 5.00% 5.06%
C 8428 8321 16 16 0.19% 0.19%
D 8428 8318 1114 1114 13.22% 13.39%

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 15 223 8986811 59047.39 732 715 152.2
A 10 83 1847440 12134.78 732 715 152.2
A 13 248 230182 1507.82 732 715 152.2
B 0 189 1314824 7560.64 882 853 173.8
B 5 255 60636 343.99 882 853 173.8
B 0 155 28134 156.98 882 853 173.8
C 1 3 112389 538.54 890 894 207.0
C 14 254 46598 220.76 890 894 207.0
C 2 14 43888 207.67 890 894 207.0
D 13 187 4929527 23590.66 833 807 208.9
D 1 52 2475166 11843.19 833 807 208.9
D 2 249 288612 1377.54 833 807 208.9

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