ASTROSAT CZTI

Data Quality Report

Orbit 36902

Creation date: 2024-06-27T21:33:02.229406
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/AS1C07_010T01_9000005246_36902cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36902cztM0_level2_quad_clean.evt
Size (bytes)129,994,56016,061,760
Size124.0 MB 15.3 MB
Events in quadrant A1,025,999115,157
Events in quadrant B358,7922,407
Events in quadrant C1,067,671116,110
Events in quadrant D1,338,129100,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08244
B08244
C07941
D08050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082994076
B041231722
C083474035
D0109585757

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A203420.098328%
B23772377100.000000%
C205750.243072%
D19161045.427975%

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 4214 2387 1 1 0.02% 0.04%
B 4210 2377 0 0 0.00% 0.00%
C 4205 2403 4 4 0.10% 0.17%
D 4196 2275 91 91 2.17% 4.00%

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 10 83 100921 2040.23 235 229 49.4
A 12 189 9246 182.7 235 229 49.4
A 13 6 4196 80.38 235 229 49.4
B 12 243 329176 131781.11 5 5 2.5
B 12 144 6435 2574.2 5 5 2.5
B 0 213 342 134.92 5 5 2.5
C 15 214 90908 1627.01 231 232 55.7
C 0 10 44976 802.85 231 232 55.7
C 3 233 29622 527.35 231 232 55.7
D 13 249 274810 5098.0 212 206 53.9
D 12 233 86638 1604.6 212 206 53.9
D 1 52 51461 951.54 212 206 53.9

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