ASTROSAT CZTI

Data Quality Report

Orbit 11663

Creation date: 2024-06-27T16:16:46.192232
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_11663cztM0_level2.evt modeM0/AS1T01_207T01_9000001720_11663cztM0_level2_quad_clean.evt
Size (bytes)506,194,56066,352,320
Size482.7 MB 63.3 MB
Events in quadrant A7,081,809357,708
Events in quadrant B2,828,400441,494
Events in quadrant C2,376,301436,629
Events in quadrant D2,696,807414,534

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246031
B0117400
C0104450
D0114080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5120157130.683594%
B51201122.187500%
C5120170.332031%
D5120370.722656%

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 6256 5120 1129 1129 18.05% 22.05%
B 6256 5122 35 35 0.56% 0.68%
C 6256 5122 0 0 0.00% 0.00%
D 6256 5122 17 17 0.27% 0.33%

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 4736959 44098.06 525 514 107.4
A 1 162 114715 1063.25 525 514 107.4
A 1 178 68652 634.39 525 514 107.4
B 4 239 325469 2800.0 613 597 116.0
B 15 204 50460 429.76 613 597 116.0
B 3 64 29867 252.27 613 597 116.0
C 13 61 4425 27.21 608 613 140.1
C 14 234 2550 13.83 608 613 140.1
C 3 202 1491 6.27 608 613 140.1
D 13 104 168703 1181.75 599 584 142.3
D 10 157 116917 817.73 599 584 142.3
D 9 68 41133 285.03 599 584 142.3

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