ASTROSAT CZTI

Data Quality Report

Orbit 20533

Creation date: 2024-06-27T18:16:29.205624
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/AS1A05_115T03_9000003032_20533cztM0_level2.evt modeM0/AS1A05_115T03_9000003032_20533cztM0_level2_quad_clean.evt
Size (bytes)1,562,339,520236,983,680
Size1.5 GB 226.0 MB
Events in quadrant A9,918,8741,529,600
Events in quadrant B10,403,3651,538,802
Events in quadrant C9,085,5001,473,873
Events in quadrant D16,617,2611,317,515

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0418824
B0428884
C0393664
D0621404

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191045302.774288%
B191045452.852806%
C191044602.407873%
D19104252513.217127%

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 20984 19108 110 110 0.52% 0.58%
B 20984 19108 63 63 0.30% 0.33%
C 20984 19108 3 3 0.01% 0.02%
D 20984 19107 2159 2159 10.29% 11.30%

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 6 16 930531 1989.85 2305 2247 466.5
A 5 203 41240 83.58 2305 2247 466.5
A 11 29 28467 56.2 2305 2247 466.5
B 7 220 638133 1443.52 2300 2242 440.5
B 0 197 215455 484.01 2300 2242 440.5
B 0 189 138658 309.68 2300 2242 440.5
C 14 238 338887 649.57 2211 2215 518.3
C 9 221 47239 86.87 2211 2215 518.3
C 8 208 28290 50.31 2211 2215 518.3
D 1 52 3307921 6392.63 2125 2065 517.1
D 12 238 2564039 4954.16 2125 2065 517.1
D 7 238 918260 1771.67 2125 2065 517.1

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