ASTROSAT CZTI

Data Quality Report

Orbit 20230505_A12_044T19_9000005600_level2

Creation date: 2023-05-06T15:55:51.762814
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/AS1A12_044T19_9000005600cztM0_level2.fits modeM0/AS1A12_044T19_9000005600cztM0_level2_quad_clean.evt
Size (bytes)449,487,360467,904,960
Size428.7 MB 446.2 MB
Events in quadrant A2,719,9802,878,512
Events in quadrant B2,567,8862,717,694
Events in quadrant C2,643,6102,711,071
Events in quadrant D2,245,6162,429,667

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010220
B010220
C010220
D010220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100810
B01246020
C01073990
D01368630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01730
B01730
C01730
D01730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A500282340.467738%
B5002821604.317582%
C500284010.801551%
D5002835267.048053%

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 65945 50028 0 0 0.00% 0.00%
B 65945 50025 0 0 0.00% 0.00%
C 65945 50023 0 0 0.00% 0.00%
D 65945 49990 0 0 0.00% 0.00%

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 7 110 2315 9.26 709 665 178.1
A 0 29 2183 8.52 709 665 178.1
A 9 19 2181 8.51 709 665 178.1
B 2 9 2189 11.44 677 644 135.0
B 3 80 1813 8.66 677 644 135.0
B 3 17 1774 8.37 677 644 135.0
C 1 81 2079 7.98 697 649 179.2
C 1 80 2046 7.8 697 649 179.2
C 3 202 2041 7.77 697 649 179.2
D 15 46 1678 6.3 642 584 173.7
D 10 189 1675 6.28 642 584 173.7
D 7 3 1642 6.09 642 584 173.7

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