ASTROSAT CZTI

Data Quality Report

Orbit 20210302_T03_279T01_9000004218_level2

Creation date: 2021-03-08T17:51:35.096603
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1T03_279T01_9000004218cztM0_level2_bc.evt modeM0/AS1T03_279T01_9000004218cztM0_level2_quad_clean.evt
Size (bytes)12,579,632,6402,785,599,360
Size11.7 GB 2.6 GB
Events in quadrant A49,376,32918,749,625
Events in quadrant B52,036,87118,936,671
Events in quadrant C87,343,22917,718,451
Events in quadrant D178,341,43614,966,569

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041540
B041540
C041540
D041540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03290
B03290
C03290
D03290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04401340
B04541840
C05795150
D09964390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20425135481.737078%
B20425143442.126795%
C204252154557.566633%
D2042526891133.738225%

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 242231 204262 482 482 0.20% 0.24%
B 242231 204258 85 85 0.04% 0.04%
C 242231 204235 818 818 0.34% 0.40%
D 242231 204116 10506 10506 4.34% 5.15%

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 1 113 1941817 771.57 11545 11367 2502.0
A 14 235 1410713 559.3 11545 11367 2502.0
A 15 174 758537 298.63 11545 11367 2502.0
B 10 245 2612565 1200.28 11541 11324 2167.2
B 5 172 1428968 654.14 11541 11324 2167.2
B 0 229 866038 394.39 11541 11324 2167.2
C 3 233 33333823 12815.44 10921 10941 2600.2
C 10 9 10451739 4015.36 10921 10941 2600.2
C 14 254 617468 233.26 10921 10941 2600.2
D 1 52 53467047 24242.82 9505 9217 2205.1
D 12 33 47074824 21343.98 9505 9217 2205.1
D 7 80 17672939 8010.4 9505 9217 2205.1

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