ASTROSAT CZTI

Data Quality Report

Orbit 21002

Creation date: 2024-06-27T18:22:14.028438
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_072T04_9000003094_21002cztM0_level2.evt modeM0/AS1A05_072T04_9000003094_21002cztM0_level2_quad_clean.evt
Size (bytes)467,755,20082,713,600
Size446.1 MB 78.9 MB
Events in quadrant A3,265,592527,440
Events in quadrant B3,667,366537,309
Events in quadrant C3,318,381502,915
Events in quadrant D3,473,430483,882

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135752
B0148792
C0136752
D0146392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6498130.200062%
B6497480.738803%
C6497480.738803%
D6497701.077420%

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 7863 6499 0 0 0.00% 0.00%
B 7862 6498 4 4 0.05% 0.06%
C 7862 6498 0 0 0.00% 0.00%
D 7862 6498 47 47 0.60% 0.72%

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 0 226 7338 38.65 850 832 168.3
A 3 137 6222 32.02 850 832 168.3
A 12 194 5930 30.29 850 832 168.3
B 0 189 172986 1094.19 856 839 157.3
B 7 220 49721 310.7 856 839 157.3
B 4 216 36908 229.26 856 839 157.3
C 14 238 132223 692.32 815 822 189.8
C 10 91 7702 36.25 815 822 189.8
C 13 61 5695 25.67 815 822 189.8
D 15 0 368802 1885.15 810 789 195.2
D 2 234 25397 126.05 810 789 195.2
D 1 20 14124 68.31 810 789 195.2

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