ASTROSAT CZTI

Data Quality Report

Orbit 35936

Creation date: 2024-06-27T21:20:13.863821
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/AS1A11_080T01_9000005146_35936cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35936cztM0_level2_quad_clean.evt
Size (bytes)1,245,896,640249,756,480
Size1.2 GB 238.2 MB
Events in quadrant A7,664,2971,676,248
Events in quadrant B11,192,3061,597,671
Events in quadrant C8,118,2891,647,045
Events in quadrant D9,701,4781,565,298

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325715
B0434434
C0333914
D0393084

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15628460.294343%
B1562813628.715127%
C156281761.126184%
D156292521.612387%

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 19808 15631 33 33 0.17% 0.21%
B 19808 15631 930 930 4.70% 5.95%
C 19808 15631 125 125 0.63% 0.80%
D 19809 15632 177 177 0.89% 1.13%

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 10 83 405791 1089.26 1831 1804 370.9
A 15 169 117223 311.2 1831 1804 370.9
A 9 143 35045 89.63 1831 1804 370.9
B 5 172 3935290 11768.0 1745 1705 334.3
B 5 255 175640 520.36 1745 1705 334.3
B 4 232 53854 156.01 1745 1705 334.3
C 15 214 641832 1556.39 1766 1786 411.2
C 0 10 508585 1232.38 1766 1786 411.2
C 0 207 90847 216.57 1766 1786 411.2
D 8 195 1003687 2322.29 1761 1718 431.5
D 1 52 604950 1398.13 1761 1718 431.5
D 10 118 492448 1137.38 1761 1718 431.5

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