ASTROSAT CZTI

Data Quality Report

Orbit 33888

Creation date: 2024-06-27T20:53:48.335981
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/AS1T04_090T01_9000004840_33888cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33888cztM0_level2_quad_clean.evt
Size (bytes)448,692,48055,229,760
Size427.9 MB 52.7 MB
Events in quadrant A2,363,855348,740
Events in quadrant B3,497,366331,852
Events in quadrant C2,860,094339,592
Events in quadrant D4,538,700311,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098172
B0133151
C0111661
D0167791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A485030.061856%
B48503737.690722%
C4850751.546392%
D48502615.381443%

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 6973 4851 1 1 0.01% 0.02%
B 6973 4851 263 263 3.77% 5.42%
C 6973 4851 47 47 0.67% 0.97%
D 6973 4851 228 228 3.27% 4.70%

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 6 14718 117.64 605 594 120.1
A 13 254 8278 64.0 605 594 120.1
A 10 83 8114 62.63 605 594 120.1
B 5 172 887389 8152.55 575 562 108.8
B 5 255 225677 2069.47 575 562 108.8
B 15 85 43246 392.39 575 562 108.8
C 0 10 230862 1716.15 585 588 134.2
C 15 214 212005 1575.62 585 588 134.2
C 3 233 71675 529.79 585 588 134.2
D 8 195 1126706 7908.35 579 562 142.4
D 12 235 556818 3906.31 579 562 142.4
D 12 16 164246 1149.47 579 562 142.4

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