ASTROSAT CZTI

Data Quality Report

Orbit 28227

Creation date: 2024-06-27T19:49:24.298074
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/AS1C05_019T04_9000004074_28227cztM0_level2.evt modeM0/AS1C05_019T04_9000004074_28227cztM0_level2_quad_clean.evt
Size (bytes)585,227,520120,000,960
Size558.1 MB 114.4 MB
Events in quadrant A3,100,381832,374
Events in quadrant B4,923,584840,113
Events in quadrant C3,116,272796,659
Events in quadrant D6,148,246716,961

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132800
B0189100
C0133840
D0226830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6418360.560922%
B64173275.095839%
C6417600.935016%
D641795514.882344%

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 7703 6420 1 1 0.01% 0.02%
B 7702 6418 132 132 1.71% 2.06%
C 7702 6419 0 0 0.00% 0.00%
D 7702 6419 846 846 10.98% 13.18%

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 10276 59.73 801 788 158.9
A 13 254 9422 54.35 801 788 158.9
A 3 137 7458 41.99 801 788 158.9
B 5 255 1392491 9564.41 786 768 145.5
B 10 245 378396 2595.19 786 768 145.5
B 0 183 47304 319.81 786 768 145.5
C 14 238 125242 712.51 758 762 174.7
C 3 233 25496 141.58 758 762 174.7
C 5 37 14597 79.19 758 762 174.7
D 1 52 2946517 17379.03 715 695 169.5
D 8 195 232775 1369.16 715 695 169.5
D 5 222 211094 1241.26 715 695 169.5

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