ASTROSAT CZTI

Data Quality Report

Orbit 09399

Creation date: 2024-06-27T15:45:35.173281
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/AS1G07_044T09_9000001334_09399cztM0_level2.evt modeM0/AS1G07_044T09_9000001334_09399cztM0_level2_quad_clean.evt
Size (bytes)506,401,92096,013,440
Size482.9 MB 91.6 MB
Events in quadrant A4,081,007588,849
Events in quadrant B3,540,567600,668
Events in quadrant C3,471,677605,224
Events in quadrant D3,722,706579,953

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169573
B0159042
C0158572
D0167732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76612663.472132%
B76612753.589610%
C76611461.905756%
D76612353.067485%

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 8116 7664 1 1 0.01% 0.01%
B 8116 7664 1 1 0.01% 0.01%
C 8116 7664 0 0 0.00% 0.00%
D 8116 7664 38 38 0.47% 0.50%

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 446570 2408.1 900 879 185.1
A 12 236 69495 370.73 900 879 185.1
A 13 251 69482 370.66 900 879 185.1
B 12 111 20226 110.24 904 879 175.5
B 11 111 16208 87.34 904 879 175.5
B 14 111 12100 63.93 904 879 175.5
C 13 61 6730 28.34 888 890 206.1
C 1 3 3727 13.77 888 890 206.1
C 8 222 3130 10.87 888 890 206.1
D 1 52 193043 917.57 869 849 209.5
D 7 71 90665 428.8 869 849 209.5
D 9 64 51134 240.07 869 849 209.5

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