ASTROSAT CZTI

Data Quality Report

Orbit 26696

Creation date: 2024-06-27T19:31:53.194443
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_145T01_9000003848_26696cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26696cztM0_level2_quad_clean.evt
Size (bytes)1,051,911,360159,770,880
Size1003.2 MB 152.4 MB
Events in quadrant A6,423,2541,030,535
Events in quadrant B6,740,7201,032,425
Events in quadrant C6,342,316990,726
Events in quadrant D11,502,720917,141

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265590
B0273700
C0261800
D0422350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125562171.728257%
B125573132.492634%
C125573082.452815%
D12557171213.633830%

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 13326 12558 2 2 0.02% 0.02%
B 13327 12559 34 34 0.26% 0.27%
C 13327 12559 2 2 0.02% 0.02%
D 13327 12558 1164 1164 8.73% 9.27%

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 0 13 195729 598.6 1611 1579 324.3
A 13 254 21149 60.34 1611 1579 324.3
A 3 137 14596 40.13 1611 1579 324.3
B 5 172 139747 452.02 1595 1559 305.7
B 0 189 135799 439.11 1595 1559 305.7
B 15 33 124897 403.45 1595 1559 305.7
C 14 238 244549 672.4 1539 1552 361.4
C 3 233 51980 139.54 1539 1552 361.4
C 2 16 28485 74.53 1539 1552 361.4
D 7 80 2842276 7741.92 1494 1454 366.9
D 1 52 2163087 5890.97 1494 1454 366.9
D 2 250 630768 1715.03 1494 1454 366.9

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