ASTROSAT CZTI

Data Quality Report

Orbit 36066

Creation date: 2022-08-10T04:03:44.297111
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/AS1T04_069T01_9000005158_36066cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36066cztM0_level2_quad_clean.evt
Size (bytes)658,609,92090,190,080
Size628.1 MB 86.0 MB
Events in quadrant A3,204,507624,303
Events in quadrant B3,948,511602,755
Events in quadrant C8,005,827477,596
Events in quadrant D4,331,458556,807

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014463484
B016761677
C0302942101
D0189501556

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01462
B01453
C01437
D01462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A679090.132548%
B67662313.414129%
C6609191929.036163%
D66672413.614819%

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 8428 6957 2 2 0.02% 0.03%
B 8430 6957 163 163 1.93% 2.34%
C 8429 6862 1480 1480 17.56% 21.57%
D 8427 6883 229 229 2.72% 3.33%

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 175435 1119.65 765 749 156.0
A 9 143 49281 311.06 765 749 156.0
A 13 6 13672 82.83 765 749 156.0
B 5 236 717890 4977.92 744 725 144.1
B 5 172 75463 518.76 744 725 144.1
B 5 255 56220 385.2 744 725 144.1
C 9 187 4734711 32856.96 609 612 144.1
C 15 208 454863 3152.72 609 612 144.1
C 15 214 234711 1624.76 609 612 144.1
D 1 52 355481 2017.7 712 693 175.8
D 12 6 298897 1695.9 712 693 175.8
D 12 17 236150 1339.06 712 693 175.8

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