ASTROSAT CZTI

Data Quality Report

Orbit 24066

Creation date: 2024-06-27T19:01:43.136817
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/AS1A07_165T01_9000003558_24066cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24066cztM0_level2_quad_clean.evt
Size (bytes)621,005,760148,173,120
Size592.2 MB 141.3 MB
Events in quadrant A3,640,9381,010,459
Events in quadrant B3,867,9661,032,421
Events in quadrant C4,714,748981,637
Events in quadrant D6,061,401927,328

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156872
B0162152
C0186662
D0231012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7708370.480021%
B7709470.609677%
C77091431.854975%
D77096057.847970%

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 9448 7710 0 0 0.00% 0.00%
B 9449 7711 1 1 0.01% 0.01%
C 9449 7711 32 32 0.34% 0.41%
D 9449 7710 446 446 4.72% 5.78%

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 6 16 11852 57.62 940 921 189.7
A 13 254 11353 54.99 940 921 189.7
A 3 137 8182 38.28 940 921 189.7
B 0 197 81018 451.71 941 918 177.3
B 7 202 44817 247.56 941 918 177.3
B 15 33 25691 139.7 941 918 177.3
C 7 247 589495 2778.5 906 912 211.8
C 0 239 446349 2102.76 906 912 211.8
C 14 238 144377 677.25 906 912 211.8
D 2 82 1817043 8426.4 888 863 215.5
D 8 195 613651 2843.11 888 863 215.5
D 1 52 112155 516.35 888 863 215.5

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