ASTROSAT CZTI

Data Quality Report

Orbit 16887

Creation date: 2024-06-27T17:28:59.939591
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_004T06_9000002506_16887cztM0_level2.evt modeM0/AS1A05_004T06_9000002506_16887cztM0_level2_quad_clean.evt
Size (bytes)615,844,80047,652,480
Size587.3 MB 45.4 MB
Events in quadrant A4,311,581258,786
Events in quadrant B3,052,506267,703
Events in quadrant C2,907,209256,692
Events in quadrant D7,961,007227,030

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168552
B0129681
C0126531
D0279401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61922193.536822%
B6192320.516796%
C6192460.742894%
D6192157225.387597%

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 7268 6194 102 102 1.40% 1.65%
B 7268 6194 0 0 0.00% 0.00%
C 7268 6194 0 0 0.00% 0.00%
D 7268 6194 1208 1208 16.62% 19.50%

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 1466771 9960.37 730 714 147.2
A 9 143 15396 99.75 730 714 147.2
A 4 2 14410 93.05 730 714 147.2
B 0 229 49837 346.99 740 721 141.6
B 10 16 44565 309.74 740 721 141.6
B 15 35 21840 149.2 740 721 141.6
C 14 238 109877 657.93 711 716 165.9
C 3 233 12621 71.75 711 716 165.9
C 14 225 7663 41.87 711 716 165.9
D 1 52 5482232 35572.39 629 610 154.1
D 13 112 68680 441.73 629 610 154.1
D 2 234 27735 176.02 629 610 154.1

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