ASTROSAT CZTI

Data Quality Report

Orbit 12465

Creation date: 2024-06-27T16:27:46.434015
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/AS1A04_174T01_9000001850_12465cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12465cztM0_level2_quad_clean.evt
Size (bytes)688,060,80077,961,600
Size656.2 MB 74.3 MB
Events in quadrant A9,395,831436,740
Events in quadrant B3,788,065489,011
Events in quadrant C3,351,057487,419
Events in quadrant D3,822,130451,695

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0329763
B0156182
C0146772
D0161232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7092131718.570220%
B71151752.459592%
C7115630.885453%
D71151592.234715%

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 7746 7094 806 806 10.41% 11.36%
B 7746 7116 32 32 0.41% 0.45%
C 7746 7117 0 0 0.00% 0.00%
D 7746 7118 81 81 1.05% 1.14%

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 13 251 5513159 32235.31 834 816 171.0
A 0 23 383763 2239.41 834 816 171.0
A 1 162 83862 485.64 834 816 171.0
B 4 239 198562 1163.01 883 862 170.0
B 11 51 40479 233.05 883 862 170.0
B 0 187 37201 213.77 883 862 170.0
C 13 61 6128 26.1 859 867 201.5
C 12 4 2623 8.71 859 867 201.5
C 3 202 1988 5.56 859 867 201.5
D 1 52 351492 1719.47 839 817 203.9
D 13 249 134350 654.76 839 817 203.9
D 7 71 102666 499.4 839 817 203.9

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