ASTROSAT CZTI

Data Quality Report

Orbit 13622

Creation date: 2024-06-27T16:43:33.994879
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/AS1A04_212T03_9000002016_13622cztM0_level2.evt modeM0/AS1A04_212T03_9000002016_13622cztM0_level2_quad_clean.evt
Size (bytes)282,553,92046,883,520
Size269.5 MB 44.7 MB
Events in quadrant A2,078,298291,067
Events in quadrant B2,181,996295,083
Events in quadrant C1,870,269285,254
Events in quadrant D2,164,941277,257

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085411
B088061
C078271
D086781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3825701.830065%
B3825320.836601%
C382570.183007%
D3825782.039216%

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 3826 3826 43 43 1.12% 1.12%
B 3826 3826 2 2 0.05% 0.05%
C 3826 3826 0 0 0.00% 0.00%
D 3826 3826 60 60 1.57% 1.57%

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 69 244880 2580.12 469 460 94.7
A 1 162 14026 143.2 469 460 94.7
A 1 178 4795 45.76 469 460 94.7
B 0 219 212699 2400.96 467 457 88.4
B 0 85 98501 1109.11 467 457 88.4
B 4 142 23002 255.04 467 457 88.4
C 3 233 112061 1080.67 450 452 103.3
C 13 61 3269 27.28 450 452 103.3
C 14 234 2154 16.48 450 452 103.3
D 8 195 203504 1887.57 448 436 107.6
D 5 222 142116 1316.95 448 436 107.6
D 13 122 82728 764.93 448 436 107.6

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