ASTROSAT CZTI

Data Quality Report

Orbit 22792

Creation date: 2024-06-27T18:45:49.518636
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_168T01_9000003368_22792cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22792cztM0_level2_quad_clean.evt
Size (bytes)463,559,040131,999,040
Size442.1 MB 125.9 MB
Events in quadrant A3,191,546897,639
Events in quadrant B3,324,103911,260
Events in quadrant C3,245,355865,623
Events in quadrant D3,811,930845,763

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139703
B0142032
C0140032
D0159332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6868340.495050%
B6868440.640652%
C6868711.033780%
D6868801.164822%

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 7778 6869 3 3 0.04% 0.04%
B 7778 6869 10 10 0.13% 0.15%
C 7778 6869 5 5 0.06% 0.07%
D 7778 6869 49 49 0.63% 0.71%

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 22777 133.92 820 805 164.1
A 13 254 12471 71.1 820 805 164.1
A 0 226 7058 38.11 820 805 164.1
B 0 228 53012 335.56 823 805 155.6
B 12 16 22259 137.89 823 805 155.6
B 12 111 18430 113.28 823 805 155.6
C 14 238 127691 693.12 790 795 183.1
C 10 22 27782 147.41 790 795 183.1
C 13 61 5530 25.86 790 795 183.1
D 1 52 581295 3044.36 793 770 190.7
D 1 239 75675 392.81 793 770 190.7
D 2 152 35584 182.57 793 770 190.7

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