ASTROSAT CZTI

Data Quality Report

Orbit 11816

Creation date: 2024-06-27T16:18:40.589596
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/AS1A04_022T04_9000001746_11816cztM0_level2.evt modeM0/AS1A04_022T04_9000001746_11816cztM0_level2_quad_clean.evt
Size (bytes)580,006,08094,389,120
Size553.1 MB 90.0 MB
Events in quadrant A3,569,837589,561
Events in quadrant B6,075,308580,636
Events in quadrant C3,359,636600,648
Events in quadrant D4,057,635571,291

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155412
B0230731
C0152551
D0169911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74102583.481781%
B74107279.811066%
C74101552.091768%
D74102573.468286%

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 7456 7412 0 0 0.00% 0.00%
B 7456 7412 301 301 4.04% 4.06%
C 7456 7412 1 1 0.01% 0.01%
D 7456 7412 61 61 0.82% 0.82%

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 1 162 75137 409.95 877 858 181.2
A 1 178 37525 202.37 877 858 181.2
A 1 161 33006 177.42 877 858 181.2
B 4 239 1047985 6345.17 860 835 165.0
B 10 16 1008663 6106.9 860 835 165.0
B 3 64 544911 3296.81 860 835 165.0
C 8 208 8489 38.22 857 858 199.7
C 13 61 6458 28.05 857 858 199.7
C 14 234 2933 10.39 857 858 199.7
D 1 52 410871 1978.37 854 826 207.3
D 13 104 100456 480.69 854 826 207.3
D 8 195 82812 395.56 854 826 207.3

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