ASTROSAT CZTI

Data Quality Report

Orbit 20446

Creation date: 2024-06-27T18:15:29.945747
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_160T02_9000003022_20446cztM0_level2.evt modeM0/AS1A05_160T02_9000003022_20446cztM0_level2_quad_clean.evt
Size (bytes)980,887,680170,118,720
Size935.4 MB 162.2 MB
Events in quadrant A6,477,3791,104,734
Events in quadrant B7,198,5241,105,587
Events in quadrant C6,254,0351,062,847
Events in quadrant D8,902,189985,749

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275773
B0296213
C0265903
D0351493

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129313232.497873%
B129322782.149706%
C129311941.500271%
D129319387.253886%

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 14201 12931 18 18 0.13% 0.14%
B 14202 12932 66 66 0.46% 0.51%
C 14201 12931 0 0 0.00% 0.00%
D 14201 12931 718 718 5.06% 5.55%

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 15 222 258897 809.87 1563 1531 317.8
A 5 16 145871 454.21 1563 1531 317.8
A 14 111 43968 133.54 1563 1531 317.8
B 7 220 336406 1109.73 1568 1527 301.8
B 0 189 265233 873.88 1568 1527 301.8
B 0 197 146298 479.75 1568 1527 301.8
C 14 238 232903 653.76 1510 1517 353.9
C 3 233 104644 291.38 1510 1517 353.9
C 8 128 10734 26.04 1510 1517 353.9
D 12 218 1201246 3281.96 1494 1451 365.6
D 1 52 814157 2223.11 1494 1451 365.6
D 7 38 326531 889.24 1494 1451 365.6

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