ASTROSAT CZTI

Data Quality Report

Orbit 22268

Creation date: 2024-06-27T18:38:48.971709
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/AS1A07_018T07_9000003294_22268cztM0_level2.evt modeM0/AS1A07_018T07_9000003294_22268cztM0_level2_quad_clean.evt
Size (bytes)481,993,920100,923,840
Size459.7 MB 96.2 MB
Events in quadrant A3,417,728651,347
Events in quadrant B3,495,856656,054
Events in quadrant C3,432,208625,553
Events in quadrant D3,752,976612,909

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150371
B0151551
C0150391
D0160951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7330781.064120%
B7331911.241304%
C7331901.227663%
D73311061.445915%

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 7725 7331 0 0 0.00% 0.00%
B 7726 7332 1 1 0.01% 0.01%
C 7726 7332 1 1 0.01% 0.01%
D 7726 7332 41 41 0.53% 0.56%

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 13 254 9408 47.42 887 867 180.1
A 3 137 7860 38.83 887 867 180.1
A 0 226 7430 36.44 887 867 180.1
B 12 111 21238 120.09 878 855 169.7
B 11 111 19007 106.94 878 855 169.7
B 3 64 18941 106.55 878 855 169.7
C 14 238 132626 662.64 845 852 198.9
C 10 22 8387 37.89 845 852 198.9
C 13 61 5863 25.2 845 852 198.9
D 1 52 385963 1845.58 861 837 208.7
D 2 234 31109 145.07 861 837 208.7
D 13 172 26271 121.88 861 837 208.7

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