ASTROSAT CZTI

Data Quality Report

Orbit 31672

Creation date: 2024-06-27T20:31:21.370910
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/AS1A10_056T01_9000004626_31672cztM0_level2.evt modeM0/AS1A10_056T01_9000004626_31672cztM0_level2_quad_clean.evt
Size (bytes)559,805,760121,138,560
Size533.9 MB 115.5 MB
Events in quadrant A3,330,900817,339
Events in quadrant B5,156,381839,657
Events in quadrant C4,013,801798,604
Events in quadrant D4,029,543777,036

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138952
B0194833
C0160322
D0160512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62561051.678389%
B62551792.861711%
C62563735.962276%
D62561231.966113%

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 8991 6258 7 7 0.08% 0.11%
B 8990 6257 3 3 0.03% 0.05%
C 8991 6258 108 108 1.20% 1.73%
D 8991 6258 32 32 0.36% 0.51%

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 12 96 61220 363.95 840 827 165.9
A 0 13 26547 155.0 840 827 165.9
A 13 254 11886 66.64 840 827 165.9
B 6 159 1712180 11008.87 844 826 155.5
B 0 190 37380 235.15 844 826 155.5
B 4 80 29107 181.93 844 826 155.5
C 0 10 382704 2049.54 810 818 186.3
C 3 233 263350 1408.98 810 818 186.3
C 14 238 133566 712.44 810 818 186.3
D 8 195 771541 4017.83 824 807 191.8
D 2 250 46537 238.39 824 807 191.8
D 13 249 44679 228.7 824 807 191.8

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