ASTROSAT CZTI

Data Quality Report

Orbit 27568

Creation date: 2024-06-27T19:41:41.912652
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_038T31_9000003960_27568cztM0_level2.evt modeM0/AS1A09_038T31_9000003960_27568cztM0_level2_quad_clean.evt
Size (bytes)304,692,48078,652,800
Size290.6 MB 75.0 MB
Events in quadrant A1,922,595532,490
Events in quadrant B2,388,579531,115
Events in quadrant C2,071,442511,082
Events in quadrant D2,547,391500,265

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088360
B0101010
C091670
D0105390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4366250.572607%
B43661252.863033%
C4366300.687128%
D4366681.557490%

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 4981 4367 3 3 0.06% 0.07%
B 4981 4367 66 66 1.33% 1.51%
C 4981 4367 4 4 0.08% 0.09%
D 4981 4367 68 68 1.37% 1.56%

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 8 192 8485 79.23 494 484 101.0
A 13 254 8310 77.5 494 484 101.0
A 13 248 5369 48.37 494 484 101.0
B 4 52 321675 3398.91 487 475 94.5
B 10 245 102545 1080.1 487 475 94.5
B 15 32 17926 184.67 487 475 94.5
C 15 208 102414 917.15 468 469 111.2
C 14 238 76332 682.5 468 469 111.2
C 2 16 50894 453.65 468 469 111.2
D 1 52 569916 5039.76 468 455 113.0
D 7 80 81640 718.49 468 455 113.0
D 2 250 62553 549.57 468 455 113.0

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