ASTROSAT CZTI

Data Quality Report

Orbit 16254

Creation date: 2024-06-27T17:20:00.302903
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/AS1T02_112T01_9000002390_16254cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16254cztM0_level2_quad_clean.evt
Size (bytes)488,854,08091,031,040
Size466.2 MB 86.8 MB
Events in quadrant A3,675,251583,709
Events in quadrant B3,714,169589,638
Events in quadrant C3,610,991580,469
Events in quadrant D3,384,338570,570

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147333
B0149382
C0146972
D0137732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61931402.260617%
B61931231.986113%
C61931542.486679%
D6193901.453254%

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 7519 6195 36 36 0.48% 0.58%
B 7519 6195 14 14 0.19% 0.23%
C 7519 6195 5 5 0.07% 0.08%
D 7519 6195 8 8 0.11% 0.13%

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 15 174 282406 1612.9 879 865 174.6
A 3 1 10943 57.74 879 865 174.6
A 0 226 7903 40.32 879 865 174.6
B 7 220 128140 792.0 871 854 160.7
B 0 198 60284 369.78 871 854 160.7
B 3 209 31504 190.71 871 854 160.7
C 14 238 132158 685.89 843 854 191.4
C 3 233 119532 619.94 843 854 191.4
C 0 207 70035 361.38 843 854 191.4
D 15 0 46388 223.58 861 841 203.7
D 1 52 39230 188.44 861 841 203.7
D 2 234 21068 99.29 861 841 203.7

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