ASTROSAT CZTI

Data Quality Report

Orbit 31173

Creation date: 2024-06-27T20:24:16.381349
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/AS1A10_058T02_9000004510_31173cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31173cztM0_level2_quad_clean.evt
Size (bytes)1,648,091,520242,648,640
Size1.5 GB 231.4 MB
Events in quadrant A9,225,4961,542,261
Events in quadrant B14,892,6771,536,852
Events in quadrant C9,789,3941,477,512
Events in quadrant D14,699,6271,456,961

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0401044
B0593244
C0414844
D0574884

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193931750.902387%
B193934852.500902%
C193934752.449337%
D193943311.706713%

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 21483 19397 0 0 0.00% 0.00%
B 21483 19397 35 35 0.16% 0.18%
C 21483 19397 22 22 0.10% 0.11%
D 21484 19398 60 60 0.28% 0.31%

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 13 254 29575 56.75 2387 2338 479.9
A 3 137 25178 47.59 2387 2338 479.9
A 0 226 19802 36.39 2387 2338 479.9
B 6 159 5260744 11563.13 2355 2294 454.8
B 4 80 234162 509.87 2355 2294 454.8
B 12 111 57668 121.77 2355 2294 454.8
C 14 238 383452 709.77 2274 2290 537.0
C 0 10 181643 333.98 2274 2290 537.0
C 10 22 146230 268.03 2274 2290 537.0
D 8 195 5644971 9453.75 2277 2234 596.9
D 12 233 167668 277.17 2277 2234 596.9
D 2 250 103729 170.04 2277 2234 596.9

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