ASTROSAT CZTI

Data Quality Report

Orbit 24886

Creation date: 2024-06-27T19:11:02.146881
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_027T16_9000003642_24886cztM0_level2.evt modeM0/AS1A07_027T16_9000003642_24886cztM0_level2_quad_clean.evt
Size (bytes)467,749,44094,786,560
Size446.1 MB 90.4 MB
Events in quadrant A3,491,457598,499
Events in quadrant B3,290,198616,834
Events in quadrant C3,285,220595,139
Events in quadrant D3,638,642588,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147350
B0140610
C0139620
D0150650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67592603.846723%
B67602103.106509%
C67602053.032544%
D67601542.278107%

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 6939 6760 53 53 0.76% 0.78%
B 6940 6761 1 1 0.01% 0.01%
C 6940 6761 0 0 0.00% 0.00%
D 6940 6761 8 8 0.12% 0.12%

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 6 16 289400 1743.44 819 798 165.5
A 11 208 38978 230.64 819 798 165.5
A 13 254 10325 57.55 819 798 165.5
B 0 190 37236 233.81 815 794 155.9
B 3 209 21095 130.25 815 794 155.9
B 12 111 19240 118.35 815 794 155.9
C 14 238 124957 667.21 793 796 186.1
C 7 247 68105 361.7 793 796 186.1
C 13 61 5483 25.19 793 796 186.1
D 8 195 457115 2321.99 811 784 196.5
D 1 52 84524 426.1 811 784 196.5
D 2 234 27837 137.65 811 784 196.5

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