ASTROSAT CZTI

Data Quality Report

Orbit 13371

Creation date: 2024-06-27T16:39:45.860638
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/AS1G08_082T01_9000001986_13371cztM0_level2.evt modeM0/AS1G08_082T01_9000001986_13371cztM0_level2_quad_clean.evt
Size (bytes)1,311,828,480213,016,320
Size1.2 GB 203.1 MB
Events in quadrant A8,372,3691,339,813
Events in quadrant B8,758,0061,358,128
Events in quadrant C8,755,8531,311,487
Events in quadrant D12,659,8711,235,037

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365674
B0376453
C0374743
D0493043

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03540
B03540
C03540
D03540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175061931.102479%
B175063141.793671%
C175062301.313835%
D175069445.392437%

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 18157 17510 18 18 0.10% 0.10%
B 18157 17510 39 39 0.21% 0.22%
C 18157 17510 31 31 0.17% 0.18%
D 18157 17510 576 576 3.17% 3.29%

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 9 143 250580 585.16 2088 2037 424.7
A 1 162 30342 66.64 2088 2037 424.7
A 15 69 24203 52.19 2088 2037 424.7
B 3 64 382252 956.23 2089 2034 397.6
B 0 189 72301 176.72 2089 2034 397.6
B 0 230 63100 153.58 2089 2034 397.6
C 14 220 627391 1320.75 2043 2052 473.5
C 3 233 150021 312.52 2043 2052 473.5
C 13 61 14999 27.34 2043 2052 473.5
D 1 52 3554581 7383.28 1992 1930 481.2
D 8 195 708910 1469.28 1992 1930 481.2
D 9 85 251240 518.13 1992 1930 481.2

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