ASTROSAT CZTI

Data Quality Report

Orbit 26549

Creation date: 2024-06-27T19:30:19.103419
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_095T02_9000003840_26549cztM0_level2.evt modeM0/AS1A09_095T02_9000003840_26549cztM0_level2_quad_clean.evt
Size (bytes)539,709,120100,618,560
Size514.7 MB 96.0 MB
Events in quadrant A3,233,371666,922
Events in quadrant B3,776,693675,991
Events in quadrant C3,219,913639,465
Events in quadrant D5,679,002615,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134800
B0152580
C0134410
D0213680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6438340.528114%
B6438871.351351%
C6438620.963032%
D64385308.232370%

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 7563 6439 3 3 0.04% 0.05%
B 7563 6439 27 27 0.36% 0.42%
C 7563 6439 1 1 0.01% 0.02%
D 7563 6439 402 402 5.32% 6.24%

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 47601 292.11 815 798 160.2
A 5 168 45018 275.99 815 798 160.2
A 13 254 10885 62.96 815 798 160.2
B 3 64 411882 2754.84 811 793 149.2
B 5 172 135279 901.23 811 793 149.2
B 3 112 34919 228.69 811 793 149.2
C 14 238 126845 709.37 774 781 177.7
C 3 233 55703 309.05 774 781 177.7
C 0 10 7763 39.29 774 781 177.7
D 7 80 1265537 6866.35 760 742 184.2
D 1 52 1224406 6643.06 760 742 184.2
D 2 250 164814 890.72 760 742 184.2

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