ASTROSAT CZTI

Data Quality Report

Orbit 27540

Creation date: 2024-06-27T19:41:14.094713
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_038T25_9000003946_27540cztM0_level2.evt modeM0/AS1A09_038T25_9000003946_27540cztM0_level2_quad_clean.evt
Size (bytes)342,627,84073,575,360
Size326.8 MB 70.2 MB
Events in quadrant A1,888,846499,334
Events in quadrant B2,026,721507,394
Events in quadrant C1,896,951481,236
Events in quadrant D4,275,538441,794

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086160
B088730
C086090
D0156250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4233280.661469%
B4233420.992204%
C4233360.850461%
D423360314.245216%

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 4973 4233 0 0 0.00% 0.00%
B 4973 4233 3 3 0.06% 0.07%
C 4973 4233 0 0 0.00% 0.00%
D 4973 4233 455 455 9.15% 10.75%

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 7462 69.96 487 476 99.9
A 3 137 4838 43.68 487 476 99.9
A 0 226 4175 37.04 487 476 99.9
B 10 245 45336 477.22 487 474 94.0
B 0 230 31713 332.3 487 474 94.0
B 15 32 14083 144.77 487 474 94.0
C 14 238 75506 677.45 464 465 110.8
C 7 221 10547 91.02 464 465 110.8
C 2 16 3841 30.48 464 465 110.8
D 1 52 2470303 23184.02 442 428 106.5
D 7 80 53572 498.85 442 428 106.5
D 2 250 40864 379.56 442 428 106.5

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