ASTROSAT CZTI

Data Quality Report

Orbit 20220409_T05_023T01_9000005058_level2

Creation date: 2022-04-13T13:22:54.543689
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/AS1T05_023T01_9000005058cztM0_level2_bc.evt modeM0/AS1T05_023T01_9000005058cztM0_level2_quad_clean.evt
Size (bytes)4,935,680,640952,770,240
Size4.6 GB 908.6 MB
Events in quadrant A25,518,4986,333,298
Events in quadrant B54,658,9955,409,007
Events in quadrant C23,135,6226,303,099
Events in quadrant D40,990,8815,581,594

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01854570
B03400620
C01725990
D02505670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02970
B02970
C02970
D02970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015540
B015540
C015540
D015540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A761587400.971664%
B761582240729.421729%
C761589831.290738%
D7615870799.295150%

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 104216 76172 104 104 0.10% 0.14%
B 104215 76119 275 275 0.26% 0.36%
C 104215 76157 173 173 0.17% 0.23%
D 104215 76130 1336 1336 1.28% 1.75%

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 15 169 8454662 9676.89 3971 3913 873.3
A 10 83 973614 1110.4 3971 3913 873.3
A 9 143 188258 211.09 3971 3913 873.3
B 5 236 27813295 39841.01 3494 3424 698.0
B 5 172 12892841 18465.65 3494 3424 698.0
B 5 200 253416 358.14 3494 3424 698.0
C 15 214 2962449 3334.33 3880 3851 887.3
C 0 10 2702362 3041.21 3880 3851 887.3
C 4 254 963958 1082.04 3880 3851 887.3
D 8 195 6591631 7575.44 3720 3613 869.7
D 7 80 4641723 5333.28 3720 3613 869.7
D 10 203 4180834 4803.31 3720 3613 869.7

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