ASTROSAT CZTI

Data Quality Report

Orbit 18197

Creation date: 2024-06-27T17:46:35.588354
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/AS1A05_160T02_9000002710_18197cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18197cztM0_level2_quad_clean.evt
Size (bytes)522,933,12072,270,720
Size498.7 MB 68.9 MB
Events in quadrant A3,410,563433,259
Events in quadrant B3,497,593434,380
Events in quadrant C3,750,641421,423
Events in quadrant D4,711,778420,082

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143572
B0146092
C0153872
D0186002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6874731.061973%
B6874851.236543%
C68741912.778586%
D68732062.997236%

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 7679 6876 1 1 0.01% 0.01%
B 7679 6876 1 1 0.01% 0.01%
C 7679 6876 50 50 0.65% 0.73%
D 7678 6875 98 98 1.28% 1.43%

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 38441 212.58 874 857 176.8
A 4 2 10032 51.9 874 857 176.8
A 0 226 7766 39.08 874 857 176.8
B 7 220 32005 185.22 866 844 168.2
B 4 171 21396 122.16 866 844 168.2
B 12 111 19451 110.6 866 844 168.2
C 4 254 375030 1915.58 831 838 195.3
C 14 238 129531 658.81 831 838 195.3
C 13 61 5978 26.31 831 838 195.3
D 5 222 942116 4511.45 849 825 208.6
D 7 238 440160 2105.66 849 825 208.6
D 10 70 45204 212.7 849 825 208.6

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