ASTROSAT CZTI

Data Quality Report

Orbit 21490

Creation date: 2024-06-27T18:28:32.357160
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/AS1T03_141T01_9000003174_21490cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21490cztM0_level2_quad_clean.evt
Size (bytes)430,128,00078,842,880
Size410.2 MB 75.2 MB
Events in quadrant A3,050,742484,502
Events in quadrant B3,207,911499,483
Events in quadrant C3,157,123481,994
Events in quadrant D3,170,545470,013

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131800
B0135510
C0134000
D0137170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6470190.293663%
B6471350.540875%
C6470470.726430%
D6470280.432767%

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 7545 6470 0 0 0.00% 0.00%
B 7546 6471 3 3 0.04% 0.05%
C 7545 6470 0 0 0.00% 0.00%
D 7545 6470 6 6 0.08% 0.09%

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 10155 58.97 791 777 159.0
A 0 226 6721 37.37 791 777 159.0
A 3 137 6516 36.08 791 777 159.0
B 0 244 26419 169.16 799 779 151.6
B 0 190 23735 151.45 799 779 151.6
B 0 230 22277 141.83 799 779 151.6
C 14 238 122245 677.44 768 773 179.3
C 3 233 32954 179.47 768 773 179.3
C 0 239 6746 33.31 768 773 179.3
D 7 38 58838 295.42 767 748 196.6
D 13 153 45000 225.04 767 748 196.6
D 12 235 34553 171.92 767 748 196.6

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