ASTROSAT CZTI

Data Quality Report

Orbit 27081

Creation date: 2024-06-27T19:36:15.994963
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_236T01_9000003908_27081cztM0_level2.evt modeM0/AS1T03_236T01_9000003908_27081cztM0_level2_quad_clean.evt
Size (bytes)549,181,440100,434,240
Size523.7 MB 95.8 MB
Events in quadrant A4,358,671636,711
Events in quadrant B3,857,058669,742
Events in quadrant C3,600,231664,685
Events in quadrant D4,387,583629,223

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172180
B0157780
C0149050
D0174610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63233355.298118%
B63241882.972802%
C63241702.688172%
D63242463.889943%

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 8783 6325 151 151 1.72% 2.39%
B 8784 6326 49 49 0.56% 0.77%
C 8784 6326 0 0 0.00% 0.00%
D 8784 6326 124 124 1.41% 1.96%

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 14 235 950909 5489.44 874 862 173.1
A 12 189 23031 128.09 874 862 173.1
A 13 254 10716 56.94 874 862 173.1
B 0 189 216201 1289.64 891 871 167.0
B 3 112 133734 795.74 891 871 167.0
B 12 111 19254 110.1 891 871 167.0
C 14 238 142001 690.19 884 892 204.4
C 15 208 10049 44.79 884 892 204.4
C 13 61 6131 25.62 884 892 204.4
D 1 52 970799 4726.17 873 855 205.2
D 2 250 106856 516.5 873 855 205.2
D 2 234 29731 140.7 873 855 205.2

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