ASTROSAT CZTI

Data Quality Report

Orbit 16031

Creation date: 2024-06-27T17:17:01.326033
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/AS1G08_012T01_9000002370_16031cztM0_level2.evt modeM0/AS1G08_012T01_9000002370_16031cztM0_level2_quad_clean.evt
Size (bytes)99,921,60019,687,680
Size95.3 MB 18.8 MB
Events in quadrant A745,155119,627
Events in quadrant B740,863122,095
Events in quadrant C727,430119,161
Events in quadrant D703,011118,913

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032132
B031881
C031781
D032041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156580.511182%
B1565130.830671%
C1565110.702875%
D156510.063898%

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 1566 1566 2 2 0.13% 0.13%
B 1566 1566 0 0 0.00% 0.00%
C 1566 1566 0 0 0.00% 0.00%
D 1566 1566 0 0 0.00% 0.00%

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 9 143 13340 324.76 190 186 40.5
A 0 226 1738 38.32 190 186 40.5
A 12 194 1401 30.0 190 186 40.5
B 0 189 5675 141.33 188 184 38.9
B 12 111 4411 108.79 188 184 38.9
B 11 111 3676 89.88 188 184 38.9
C 14 238 27688 629.68 178 180 43.7
C 13 61 1239 24.24 178 180 43.7
C 3 233 1210 23.58 178 180 43.7
D 13 238 10549 224.1 183 176 46.3
D 2 234 4434 91.99 183 176 46.3
D 3 238 2235 44.48 183 176 46.3

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