ASTROSAT CZTI

Data Quality Report

Orbit 01170

Creation date: 2024-06-27T14:08:35.569579
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/AS1P01_997T02_9000000218_01170cztM0_level2.evt modeM0/AS1P01_997T02_9000000218_01170cztM0_level2_quad_clean.evt
Size (bytes)272,980,80019,661,760
Size260.3 MB 18.8 MB
Events in quadrant A1,381,826132,170
Events in quadrant B1,549,198134,435
Events in quadrant C1,868,988127,187
Events in quadrant D3,382,984107,622

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050091
B055040
C064270
D0109610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123910.080710%
B123940.322841%
C1239564.519774%
D123947638.418079%

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 1239 1239 18 18 1.45% 1.45%
B 1238 1238 29 29 2.34% 2.34%
C 1239 1239 220 220 17.76% 17.76%
D 1239 1239 1165 1165 94.03% 94.03%

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 13 9 1930 17.95 359 363 87.3
A 11 79 1818 16.67 359 363 87.3
A 3 111 1283 10.54 359 363 87.3
B 6 53 34137 369.81 389 393 91.2
B 2 32 16586 177.46 389 393 91.2
B 5 191 8715 91.2 389 393 91.2
C 9 83 506720 5466.67 332 343 92.6
C 15 241 59008 633.33 332 343 92.6
C 3 111 3102 29.79 332 343 92.6
D 1 239 2274432 24504.11 293 299 92.8
D 10 125 4723 47.67 293 299 92.8
D 2 170 4005 39.93 293 299 92.8

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