ASTROSAT CZTI

Data Quality Report

Orbit 20220828_A09_002T01_9000005322_level2

Creation date: 2022-09-08T01:24:36.585237
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/AS1A09_002T01_9000005322cztM0_level2_bc.evt modeM0/AS1A09_002T01_9000005322cztM0_level2_quad_clean.evt
Size (bytes)11,787,773,7603,374,556,480
Size11.0 GB 3.1 GB
Events in quadrant A75,467,87021,902,625
Events in quadrant B73,320,06121,917,954
Events in quadrant C74,470,52122,136,443
Events in quadrant D118,322,59520,700,434

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05367390
B05649880
C05473920
D06934850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08780
B08770
C08780
D08780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046580
B046610
C046520
D046580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22708651442.265221%
B22706598334.330478%
C22719084183.705269%
D226832137966.082034%

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 319918 227706 1605 1605 0.50% 0.70%
B 319918 227590 1746 1746 0.55% 0.77%
C 319918 227664 1289 1289 0.40% 0.57%
D 319918 227400 5809 5809 1.82% 2.55%

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 15 222 14814958 5750.8 11675 11548 2574.1
A 10 83 9478792 3677.81 11675 11548 2574.1
A 6 10 1616421 623.46 11675 11548 2574.1
B 15 35 9521947 4172.32 11637 11425 2279.4
B 4 171 4633749 2027.84 11637 11425 2279.4
B 5 172 3801605 1662.77 11637 11425 2279.4
C 14 254 10335440 3926.22 11460 11420 2629.5
C 15 214 9100446 3456.55 11460 11420 2629.5
C 1 23 5483002 2080.84 11460 11420 2629.5
D 12 227 35427525 12800.7 11477 11156 2766.8
D 13 249 6339277 2287.2 11477 11156 2766.8
D 12 235 6119326 2207.7 11477 11156 2766.8

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