ASTROSAT CZTI

Data Quality Report

Orbit 21337

Creation date: 2024-06-27T18:26:33.410737
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_108T01_9000003146_21337cztM0_level2.evt modeM0/AS1A05_108T01_9000003146_21337cztM0_level2_quad_clean.evt
Size (bytes)528,920,640111,709,440
Size504.4 MB 106.5 MB
Events in quadrant A4,102,659734,417
Events in quadrant B3,786,370754,848
Events in quadrant C3,584,937709,770
Events in quadrant D4,067,761695,140

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166332
B0157332
C0151193
D0167872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70243384.812073%
B70252293.259786%
C70242203.132118%
D70242493.544989%

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 9514 7025 62 62 0.65% 0.88%
B 9515 7025 21 21 0.22% 0.30%
C 9514 7024 0 0 0.00% 0.00%
D 9514 7025 87 87 0.91% 1.24%

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 15 236 418391 2277.7 923 907 183.3
A 5 168 112482 608.73 923 907 183.3
A 13 254 11193 56.12 923 907 183.3
B 3 64 80854 458.1 926 905 174.5
B 0 244 25458 140.69 926 905 174.5
B 0 230 23632 130.22 926 905 174.5
C 14 238 141619 689.02 882 887 204.2
C 13 61 6251 26.26 882 887 204.2
C 0 10 5076 20.51 882 887 204.2
D 1 52 393779 1838.63 886 861 213.7
D 13 174 209734 977.41 886 861 213.7
D 1 20 39744 181.95 886 861 213.7

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