ASTROSAT CZTI

Data Quality Report

Orbit 44037

Creation date: 2024-06-27T22:58:34.815886
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/AS1A13_025T01_9000005936_44037cztM0_level2.fits modeM0/AS1A13_025T01_9000005936_44037cztM0_level2_quad_clean.evt
Size (bytes)509,613,120108,884,160
Size486.0 MB 103.8 MB
Events in quadrant A4,720,955736,813
Events in quadrant B3,382,982762,120
Events in quadrant C3,793,292723,090
Events in quadrant D6,468,858626,367

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186972
B0144002
C0155892
D0237122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64241792.786426%
B6424681.058531%
C64241672.599626%
D64246359.884807%

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 7554 6425 39 39 0.52% 0.61%
B 7554 6424 10 10 0.13% 0.16%
C 7554 6425 128 128 1.69% 1.99%
D 7554 6425 553 553 7.32% 8.61%

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 10 83 1351735 8869.13 740 723 152.3
A 15 223 312466 2046.53 740 723 152.3
A 15 222 108759 709.23 740 723 152.3
B 0 200 167164 1154.11 742 720 144.2
B 0 213 147403 1017.09 742 720 144.2
B 0 183 38908 264.79 742 720 144.2
C 1 241 608029 3579.6 728 732 169.7
C 3 233 193809 1138.06 728 732 169.7
C 14 254 136017 797.41 728 732 169.7
D 1 52 2657083 14935.34 712 691 177.9
D 7 80 278749 1563.36 712 691 177.9
D 5 235 150029 839.64 712 691 177.9

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