ASTROSAT CZTI

Data Quality Report

Orbit 21383

Creation date: 2024-06-27T18:27:08.815565
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/AS1C04_001T01_9000003156_21383cztM0_level2.evt modeM0/AS1C04_001T01_9000003156_21383cztM0_level2_quad_clean.evt
Size (bytes)575,879,040115,816,320
Size549.2 MB 110.5 MB
Events in quadrant A3,531,947774,303
Events in quadrant B3,598,296778,178
Events in quadrant C4,082,786738,924
Events in quadrant D5,737,130712,374

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152802
B0156122
C0167972
D0220402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7236330.456053%
B7236570.787728%
C72361592.197347%
D72366038.333333%

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 7611 7236 3 3 0.04% 0.04%
B 7611 7237 15 15 0.20% 0.21%
C 7611 7237 41 41 0.54% 0.57%
D 7611 7237 429 429 5.64% 5.93%

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 5 168 112670 651.12 855 836 171.8
A 5 16 84170 485.18 855 836 171.8
A 15 174 15069 82.87 855 836 171.8
B 0 228 51829 314.44 854 833 162.2
B 0 229 45232 273.77 854 833 162.2
B 0 189 38292 230.97 854 833 162.2
C 3 233 736969 3890.53 821 825 189.2
C 14 238 128327 673.85 821 825 189.2
C 0 236 7795 36.84 821 825 189.2
D 13 174 1211478 6121.28 819 796 197.8
D 1 52 825801 4171.28 819 796 197.8
D 12 235 285072 1437.32 819 796 197.8

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