ASTROSAT CZTI

Data Quality Report

Orbit 16983

Creation date: 2024-06-27T17:30:42.446241
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/AS1T03_058T01_9000002522_16983cztM0_level2.evt modeM0/AS1T03_058T01_9000002522_16983cztM0_level2_quad_clean.evt
Size (bytes)571,538,880120,893,760
Size545.1 MB 115.3 MB
Events in quadrant A3,437,775798,319
Events in quadrant B4,217,642801,057
Events in quadrant C4,186,222779,287
Events in quadrant D4,958,646760,976

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154681
B0174831
C0174521
D0199591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74982052.734062%
B74992963.947193%
C74992663.547140%
D74993154.200560%

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 7524 7500 0 0 0.00% 0.00%
B 7525 7501 47 47 0.62% 0.63%
C 7525 7501 0 0 0.00% 0.00%
D 7525 7501 94 94 1.25% 1.25%

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 15 174 9210 46.47 890 870 179.5
A 12 189 8845 44.44 890 870 179.5
A 0 226 7877 39.04 890 870 179.5
B 7 220 308446 1840.38 885 861 167.1
B 4 216 147365 876.58 885 861 167.1
B 15 35 70933 419.26 885 861 167.1
C 3 233 724678 3666.35 850 853 197.4
C 14 238 131911 663.84 850 853 197.4
C 0 207 11829 55.6 850 853 197.4
D 1 52 1553324 7412.43 862 833 209.4
D 2 152 51670 242.72 862 833 209.4
D 15 145 37305 174.13 862 833 209.4

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