ASTROSAT CZTI

Data Quality Report

Orbit 21822

Creation date: 2024-06-27T18:32:40.246412
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_004T01_9000003230_21822cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21822cztM0_level2_quad_clean.evt
Size (bytes)492,834,240101,894,400
Size470.0 MB 97.2 MB
Events in quadrant A3,337,336662,736
Events in quadrant B3,639,278671,712
Events in quadrant C3,300,267647,319
Events in quadrant D4,179,496622,821

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143812
B0151292
C0143002
D0171042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6909640.926328%
B6910871.259045%
C6910811.172214%
D69101812.619392%

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 7799 6909 3 3 0.04% 0.04%
B 7800 6910 17 17 0.22% 0.25%
C 7800 6910 0 0 0.00% 0.00%
D 7800 6910 112 112 1.44% 1.62%

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 2 79 18226 99.79 855 838 174.2
A 13 254 13133 70.56 855 838 174.2
A 13 252 9091 47.36 855 838 174.2
B 0 245 114487 692.63 848 825 164.1
B 3 64 94264 569.4 848 825 164.1
B 0 190 30853 182.98 848 825 164.1
C 14 238 126542 659.71 812 817 190.6
C 13 61 5604 25.12 812 817 190.6
C 3 248 4251 18.02 812 817 190.6
D 1 52 611017 3070.99 817 793 198.7
D 7 238 280567 1407.98 817 793 198.7
D 13 172 42885 211.83 817 793 198.7

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