ASTROSAT CZTI

Data Quality Report

Orbit 20171201_C03_024T01_9000001742_level2

Creation date: 2025-11-18T21:09:28.397074
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/AS1C03_024T01_9000001742cztM0_level2.fits modeM0/AS1C03_024T01_9000001742cztM0_level2_quad_clean.evt
Size (bytes)683,896,320644,014,080
Size652.2 MB 614.2 MB
Events in quadrant A4,161,7363,908,149
Events in quadrant B3,873,1943,428,345
Events in quadrant C4,167,2263,787,031
Events in quadrant D3,518,7983,394,237

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01706930
B02552250
C01499830
D01967830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014760
B014760
C014740
D014760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7269520552.826879%
B72725851311.705741%
C727175650.776985%
D7272434974.808591%

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 84073 72641 0 0 0.00% 0.00%
B 84073 72717 0 0 0.00% 0.00%
C 84073 72745 0 0 0.00% 0.00%
D 84073 72700 0 0 0.00% 0.00%

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 0 29 4066 11.32 1084 1012 269.7
A 7 110 3377 8.77 1084 1012 269.7
A 0 30 3076 7.65 1084 1012 269.7
B 2 9 3345 11.64 1023 973 203.8
B 3 17 2627 8.12 1023 973 203.8
B 14 254 2569 7.83 1023 973 203.8
C 1 81 3039 7.04 1100 1023 286.5
C 1 80 2963 6.77 1100 1023 286.5
C 12 241 2918 6.61 1100 1023 286.5
D 3 14 2630 6.36 1004 910 270.5
D 6 231 2613 6.3 1004 910 270.5
D 7 5 2523 5.96 1004 910 270.5

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