ASTROSAT CZTI

Data Quality Report

Orbit 25064

Creation date: 2024-06-27T19:13:23.570955
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_206T01_9000003672_25064cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25064cztM0_level2_quad_clean.evt
Size (bytes)1,443,191,040240,491,520
Size1.3 GB 229.4 MB
Events in quadrant A8,382,4171,560,520
Events in quadrant B9,037,4141,572,815
Events in quadrant C8,622,2971,498,437
Events in quadrant D16,461,6491,422,313

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365403
B0380723
C0366823
D0616973

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178481911.070148%
B178492311.294190%
C178492661.490280%
D178496813.815340%

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 19628 17849 4 4 0.02% 0.02%
B 19629 17851 30 30 0.15% 0.17%
C 19629 17852 6 6 0.03% 0.03%
D 19629 17851 405 405 2.06% 2.27%

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 2 79 38757 84.25 2158 2109 435.0
A 13 254 30789 65.94 2158 2109 435.0
A 13 34 23354 48.84 2158 2109 435.0
B 5 172 173680 421.73 2146 2091 406.9
B 0 190 149451 362.18 2146 2091 406.9
B 4 80 92348 221.83 2146 2091 406.9
C 14 238 325736 674.37 2062 2075 479.9
C 7 247 130151 266.85 2062 2075 479.9
C 3 233 56961 114.36 2062 2075 479.9
D 8 195 4029083 8035.23 2072 2009 501.2
D 1 52 2101773 4189.66 2072 2009 501.2
D 1 3 932210 1856.03 2072 2009 501.2

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