ASTROSAT CZTI

Data Quality Report

Orbit 16427

Creation date: 2024-06-27T17:22:31.124906
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/AS1A05_069T03_9000002426_16427cztM0_level2.evt modeM0/AS1A05_069T03_9000002426_16427cztM0_level2_quad_clean.evt
Size (bytes)454,858,56089,729,280
Size433.8 MB 85.6 MB
Events in quadrant A3,085,133579,515
Events in quadrant B3,520,722603,939
Events in quadrant C3,198,284568,614
Events in quadrant D3,553,164535,423

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130603
B0144642
C0133152
D0147592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6153490.796359%
B6153570.926377%
C6153671.088900%
D61531812.941654%

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 7434 6155 19 19 0.26% 0.31%
B 7434 6155 3 3 0.04% 0.05%
C 7434 6155 0 0 0.00% 0.00%
D 7434 6155 159 159 2.14% 2.58%

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 15 174 102075 659.25 774 757 153.7
A 0 226 6718 38.79 774 757 153.7
A 12 194 5775 32.65 774 757 153.7
B 15 35 243865 1664.94 785 768 146.0
B 0 198 39657 266.34 785 768 146.0
B 0 189 39202 263.23 785 768 146.0
C 3 233 124280 706.51 749 757 174.8
C 14 238 117023 665.0 749 757 174.8
C 7 247 33849 189.27 749 757 174.8
D 12 218 484601 2694.97 738 717 179.6
D 15 0 144580 801.24 738 717 179.6
D 5 222 61073 336.15 738 717 179.6

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