ASTROSAT CZTI

Data Quality Report

Orbit 27710

Creation date: 2024-06-27T19:43:24.797209
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_262T01_9000003988_27710cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27710cztM0_level2_quad_clean.evt
Size (bytes)509,483,52088,822,080
Size485.9 MB 84.7 MB
Events in quadrant A3,595,397547,992
Events in quadrant B3,861,634549,549
Events in quadrant C3,731,614535,307
Events in quadrant D3,721,931525,360

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157470
B0162410
C0159320
D0165200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76391552.029061%
B76401892.473822%
C76401852.421466%
D76401221.596859%

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 7819 7639 1 1 0.01% 0.01%
B 7820 7640 0 0 0.00% 0.00%
C 7820 7640 3 3 0.04% 0.04%
D 7820 7640 19 19 0.24% 0.25%

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 6 16 12524 61.55 927 905 188.8
A 13 254 12348 60.62 927 905 188.8
A 3 137 9120 43.52 927 905 188.8
B 0 230 113977 631.27 923 898 179.1
B 3 112 88140 487.03 923 898 179.1
B 12 111 22731 121.88 923 898 179.1
C 14 238 143375 674.2 896 900 211.3
C 3 233 55928 260.4 896 900 211.3
C 15 208 28056 128.5 896 900 211.3
D 1 52 156402 716.56 897 870 217.1
D 2 250 136556 625.13 897 870 217.1
D 2 234 29909 133.79 897 870 217.1

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