ASTROSAT CZTI

Data Quality Report

Orbit 11666

Creation date: 2024-06-27T16:16:48.731040
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/AS1T01_207T01_9000001720_11666cztM0_level2.evt modeM0/AS1T01_207T01_9000001720_11666cztM0_level2_quad_clean.evt
Size (bytes)517,705,92085,072,320
Size493.7 MB 81.1 MB
Events in quadrant A4,359,974531,599
Events in quadrant B3,694,913549,667
Events in quadrant C3,129,986544,320
Events in quadrant D4,071,285515,463

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171413
B0146701
C0130761
D0160281

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62362443.912765%
B62361572.517640%
C6236610.978191%
D62361792.870430%

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 7498 6239 92 92 1.23% 1.47%
B 7498 6239 36 36 0.48% 0.58%
C 7498 6239 0 0 0.00% 0.00%
D 7498 6239 102 102 1.36% 1.63%

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 5 843451 5271.1 800 784 159.9
A 1 162 156940 976.8 800 784 159.9
A 1 178 90380 560.45 800 784 159.9
B 4 239 405614 2737.74 807 787 147.9
B 15 204 54614 364.02 807 787 147.9
B 3 64 51712 344.39 807 787 147.9
C 13 61 5761 27.19 803 810 182.1
C 3 202 1969 6.36 803 810 182.1
C 3 203 1754 5.18 803 810 182.1
D 13 104 482478 2564.4 790 770 187.8
D 1 52 431266 2291.77 790 770 187.8
D 13 249 48784 255.6 790 770 187.8

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