ASTROSAT CZTI

Data Quality Report

Orbit 27569

Creation date: 2024-06-27T19:41:43.316739
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/AS1A09_038T32_9000003962_27569cztM0_level2.evt modeM0/AS1A09_038T32_9000003962_27569cztM0_level2_quad_clean.evt
Size (bytes)297,345,60073,776,960
Size283.6 MB 70.4 MB
Events in quadrant A1,933,068495,617
Events in quadrant B2,015,845500,599
Events in quadrant C2,053,124470,635
Events in quadrant D2,704,072459,220

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088920
B089700
C091920
D0110890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4377180.411241%
B4378170.388305%
C4378491.119233%
D4378932.124258%

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 5112 4378 1 1 0.02% 0.02%
B 5113 4379 1 1 0.02% 0.02%
C 5113 4379 5 5 0.10% 0.11%
D 5113 4379 84 84 1.64% 1.92%

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 8 192 9244 86.66 497 487 101.0
A 13 254 7591 70.31 497 487 101.0
A 3 137 4808 42.76 497 487 101.0
B 15 32 17829 180.48 498 486 96.1
B 10 245 14061 141.27 498 486 96.1
B 12 111 11766 117.38 498 486 96.1
C 15 208 98720 878.77 474 475 111.8
C 14 238 77360 687.71 474 475 111.8
C 2 16 17653 153.65 474 475 111.8
D 1 52 732084 6435.89 470 456 113.7
D 2 250 47083 410.16 470 456 113.7
D 12 233 32450 281.44 470 456 113.7

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