ASTROSAT CZTI

Data Quality Report

Orbit 20863

Creation date: 2024-06-27T18:20:30.268350
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_160T01_9000003078_20863cztM0_level2.evt modeM0/AS1A05_160T01_9000003078_20863cztM0_level2_quad_clean.evt
Size (bytes)298,347,84036,414,720
Size284.5 MB 34.7 MB
Events in quadrant A1,621,272227,100
Events in quadrant B1,672,246232,231
Events in quadrant C1,660,703213,777
Events in quadrant D3,854,753193,694

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114019473023680846
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091082240
B091732216
C090432160
D0190865515

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08818
B08721
C09222
D08721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A334590.269058%
B3356110.327771%
C3351220.656520%
D31812116.633134%

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 7778 3497 0 0 0.00% 0.00%
B 7779 3502 2 2 0.03% 0.06%
C 7777 3509 0 0 0.00% 0.00%
D 7758 3348 92 92 1.19% 2.75%

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 12835 143.56 417 407 86.6
A 0 226 3623 37.15 417 407 86.6
A 3 137 3569 36.52 417 407 86.6
B 0 189 14643 175.11 418 407 81.3
B 0 190 14429 172.48 418 407 81.3
B 12 111 10001 118.01 418 407 81.3
C 14 238 62198 660.01 396 398 93.6
C 3 233 45878 485.71 396 398 93.6
C 9 54 2992 27.7 396 398 93.6
D 1 239 2182958 23502.79 378 366 92.9
D 5 222 85836 920.37 378 366 92.9
D 7 38 54036 577.93 378 366 92.9

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