ASTROSAT CZTI

Data Quality Report

Orbit 15937

Creation date: 2024-06-27T17:15:20.264923
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/AS1A04_104T03_9000002348_15937cztM0_level2.evt modeM0/AS1A04_104T03_9000002348_15937cztM0_level2_quad_clean.evt
Size (bytes)440,262,72089,749,440
Size419.9 MB 85.6 MB
Events in quadrant A3,169,970581,003
Events in quadrant B3,444,499591,999
Events in quadrant C3,255,083559,860
Events in quadrant D3,040,301550,246

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133983
B0142242
C0134602
D0132442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62321211.941592%
B62321412.262516%
C62321502.406932%
D6232871.396021%

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 7498 6233 3 3 0.04% 0.05%
B 7498 6233 2 2 0.03% 0.03%
C 7498 6234 0 0 0.00% 0.00%
D 7498 6234 3 3 0.04% 0.05%

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 15 239 38867 231.42 813 797 164.5
A 0 226 7250 39.23 813 797 164.5
A 12 194 6081 32.12 813 797 164.5
B 4 142 75038 481.37 815 798 154.2
B 0 244 67716 433.89 815 798 154.2
B 0 190 28306 178.36 815 798 154.2
C 14 238 120594 668.77 770 776 179.2
C 3 233 117322 650.51 770 776 179.2
C 7 247 14482 76.5 770 776 179.2
D 15 0 40503 206.55 783 761 192.4
D 2 234 25842 130.35 783 761 192.4
D 2 120 17443 86.7 783 761 192.4

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