ASTROSAT CZTI

Data Quality Report

Orbit 27540

Creation date: 2024-06-27T19:41:14.875611
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_038T26_9000003948_27540cztM0_level2.evt modeM0/AS1A09_038T26_9000003948_27540cztM0_level2_quad_clean.evt
Size (bytes)223,392,96039,991,680
Size213.0 MB 38.1 MB
Events in quadrant A1,356,008261,421
Events in quadrant B1,446,236266,438
Events in quadrant C1,589,069253,089
Events in quadrant D2,188,669236,179

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056110
B058790
C063940
D083620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2711200.737735%
B2711381.401697%
C2710792.915129%
D27102338.597786%

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 3636 2711 0 0 0.00% 0.00%
B 3636 2711 2 2 0.06% 0.07%
C 3635 2710 13 13 0.36% 0.48%
D 3635 2711 184 184 5.06% 6.79%

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 13 254 4852 62.82 350 342 71.8
A 3 137 3541 44.56 350 342 71.8
A 0 226 2954 36.38 350 342 71.8
B 0 230 27175 389.62 348 340 68.9
B 10 245 23406 334.9 348 340 68.9
B 0 244 13167 186.24 348 340 68.9
C 7 221 233135 2923.44 331 331 79.6
C 14 238 53170 663.53 331 331 79.6
C 2 16 10964 133.52 331 331 79.6
D 1 52 881920 11119.29 326 315 79.3
D 2 250 41919 524.73 326 315 79.3
D 7 80 23232 289.04 326 315 79.3

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