ASTROSAT CZTI

Data Quality Report

Orbit 24666

Creation date: 2024-06-27T19:08:32.590040
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/AS1T03_191T01_9000003618_24666cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24666cztM0_level2_quad_clean.evt
Size (bytes)455,310,720128,018,880
Size434.2 MB 122.1 MB
Events in quadrant A3,011,904895,109
Events in quadrant B3,068,814894,219
Events in quadrant C3,004,329838,023
Events in quadrant D4,295,597829,967

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126301
B0128581
C0127672
D0168311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6023921.527478%
B6024921.527224%
C60231121.859538%
D60231712.839117%

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 7248 6023 0 0 0.00% 0.00%
B 7249 6024 0 0 0.00% 0.00%
C 7248 6024 2 2 0.03% 0.03%
D 7248 6024 67 67 0.92% 1.11%

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 9907 58.88 780 765 155.3
A 0 226 6837 39.11 780 765 155.3
A 3 137 6604 37.61 780 765 155.3
B 0 189 50903 350.74 762 745 143.0
B 7 202 20973 141.45 762 745 143.0
B 12 111 16494 110.13 762 745 143.0
C 14 238 120477 726.16 722 726 164.9
C 6 96 40220 239.49 722 726 164.9
C 2 16 14436 83.13 722 726 164.9
D 1 52 1162479 6456.95 747 725 179.9
D 8 195 194650 1077.82 747 725 179.9
D 12 235 85416 470.71 747 725 179.9

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