ASTROSAT CZTI

Data Quality Report

Orbit 31191

Creation date: 2024-06-27T20:24:31.235609
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_31191cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31191cztM0_level2_quad_clean.evt
Size (bytes)385,096,32046,252,800
Size367.3 MB 44.1 MB
Events in quadrant A2,039,983286,114
Events in quadrant B3,215,694283,411
Events in quadrant C2,159,111269,932
Events in quadrant D3,964,082266,018

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084560
B0126110
C088140
D0149480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A418030.071770%
B4181160.382684%
C4181210.502272%
D41811142.726620%

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 4180 4180 0 0 0.00% 0.00%
B 4181 4181 1 1 0.02% 0.02%
C 4181 4181 1 1 0.02% 0.02%
D 4181 4181 77 77 1.84% 1.84%

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 8349 74.22 528 518 105.5
A 3 137 5113 43.55 528 518 105.5
A 0 226 4474 37.49 528 518 105.5
B 6 159 1101751 11074.11 516 504 99.4
B 0 230 43192 429.27 516 504 99.4
B 4 80 12285 118.47 516 504 99.4
C 0 10 130783 1109.32 495 498 117.4
C 14 238 81222 687.33 495 498 117.4
C 2 114 9286 74.83 495 498 117.4
D 8 195 1953666 15572.38 501 490 125.4
D 2 250 36091 283.84 501 490 125.4
D 12 233 34791 273.48 501 490 125.4

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