ASTROSAT CZTI

Data Quality Report

Orbit 20898

Creation date: 2024-06-27T18:20:52.813548
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/AS1A06_002T03_9000003080_20898cztM0_level2.evt modeM0/AS1A06_002T03_9000003080_20898cztM0_level2_quad_clean.evt
Size (bytes)455,823,36090,725,760
Size434.7 MB 86.5 MB
Events in quadrant A3,205,997575,907
Events in quadrant B3,514,366587,765
Events in quadrant C3,196,855568,727
Events in quadrant D3,434,361550,384

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138358
B01461015
C0136484
D01469210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6671400.599610%
B6670380.569715%
C6673380.569459%
D6671410.614601%

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 7804 6674 23 23 0.29% 0.34%
B 7804 6674 8 8 0.10% 0.12%
C 7804 6674 0 0 0.00% 0.00%
D 7804 6674 52 52 0.67% 0.78%

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 66263 397.7 812 797 164.6
A 5 16 20249 118.17 812 797 164.6
A 0 226 6955 37.41 812 797 164.6
B 7 220 137629 888.35 818 800 154.0
B 0 189 53630 343.0 818 800 154.0
B 0 229 35088 222.61 818 800 154.0
C 14 238 126709 687.87 786 792 183.1
C 13 61 5571 26.11 786 792 183.1
C 9 54 2221 7.81 786 792 183.1
D 5 222 196494 1027.86 787 767 190.4
D 1 20 110459 576.05 787 767 190.4
D 1 52 58261 301.93 787 767 190.4

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