ASTROSAT CZTI

Data Quality Report

Orbit 22752

Creation date: 2024-06-27T18:45:10.940598
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/AS1A08_007T01_9000003362_22752cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22752cztM0_level2_quad_clean.evt
Size (bytes)480,614,40099,383,040
Size458.3 MB 94.8 MB
Events in quadrant A3,047,846656,665
Events in quadrant B3,176,915672,527
Events in quadrant C3,147,565647,367
Events in quadrant D4,774,105612,266

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127171
B0130141
C0130421
D0181161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6029420.696633%
B6029600.995190%
C6029761.260574%
D60293896.452148%

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 7239 6030 0 0 0.00% 0.00%
B 7239 6030 3 3 0.04% 0.05%
C 7239 6030 0 0 0.00% 0.00%
D 7239 6030 208 208 2.87% 3.45%

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 13 254 10120 59.93 790 776 155.9
A 0 226 7008 39.97 790 776 155.9
A 3 137 6032 33.71 790 776 155.9
B 0 190 38940 262.86 785 766 145.2
B 0 230 32115 215.86 785 766 145.2
B 12 111 16505 108.37 785 766 145.2
C 14 238 121716 667.19 775 779 181.3
C 13 61 5395 25.47 775 779 181.3
C 10 22 5102 23.85 775 779 181.3
D 1 52 1712881 9339.36 762 743 183.3
D 2 152 128794 698.49 762 743 183.3
D 2 234 25456 134.8 762 743 183.3

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