ASTROSAT CZTI

Data Quality Report

Orbit 18088

Creation date: 2024-06-27T17:45:16.943265
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_080T01_9000002686_18088cztM0_level2.evt modeM0/AS1T03_080T01_9000002686_18088cztM0_level2_quad_clean.evt
Size (bytes)401,595,840120,119,040
Size383.0 MB 114.6 MB
Events in quadrant A2,981,352813,432
Events in quadrant B2,900,189813,048
Events in quadrant C2,845,898789,444
Events in quadrant D3,011,859788,339

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130111
B0127081
C0126491
D0133341

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6217430.691652%
B6217410.659482%
C6218470.755870%
D6218400.643294%

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 7222 6218 1 1 0.01% 0.02%
B 7222 6218 0 0 0.00% 0.00%
C 7223 6219 0 0 0.00% 0.00%
D 7223 6219 17 17 0.24% 0.27%

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 4 2 123776 833.79 735 720 147.6
A 15 174 31818 210.71 735 720 147.6
A 0 226 6394 38.45 735 720 147.6
B 0 189 20505 142.93 727 709 138.5
B 12 111 16340 112.86 727 709 138.5
B 11 111 14281 97.99 727 709 138.5
C 14 238 109348 658.87 697 699 164.9
C 3 233 12433 71.16 697 699 164.9
C 9 160 5724 30.47 697 699 164.9
D 11 176 276845 1594.1 710 688 173.2
D 2 234 24172 135.56 710 688 173.2
D 2 152 16152 89.26 710 688 173.2

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