ASTROSAT CZTI

Data Quality Report

Orbit 20219

Creation date: 2024-06-27T18:12:35.194453
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_117T01_9000002998_20219cztM0_level2.evt modeM0/AS1A05_117T01_9000002998_20219cztM0_level2_quad_clean.evt
Size (bytes)503,326,080109,589,760
Size480.0 MB 104.5 MB
Events in quadrant A3,570,038724,290
Events in quadrant B3,658,493730,536
Events in quadrant C3,691,363699,548
Events in quadrant D3,860,678689,371

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146641
B0149831
C0149401
D0155921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6822741.084726%
B6822600.879507%
C6822921.348578%
D6821771.128867%

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 8032 6823 16 16 0.20% 0.23%
B 8032 6823 3 3 0.04% 0.04%
C 8032 6823 0 0 0.00% 0.00%
D 8031 6822 32 32 0.40% 0.47%

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 4 2 68555 373.95 906 890 180.9
A 14 238 16288 85.1 906 890 180.9
A 0 226 7828 38.34 906 890 180.9
B 7 220 58001 338.7 892 870 168.7
B 0 229 33684 194.54 892 870 168.7
B 0 198 31556 181.92 892 870 168.7
C 3 233 140756 688.08 871 880 203.3
C 14 238 136727 668.26 871 880 203.3
C 1 16 8564 37.8 871 880 203.3
D 1 52 186372 855.26 891 869 216.9
D 9 85 135774 621.97 891 869 216.9
D 11 176 61854 281.17 891 869 216.9

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