ASTROSAT CZTI

Data Quality Report

Orbit 35590

Creation date: 2022-04-28T21:03:30.325439
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/AS1A10_065T04_9000005098_35590cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35590cztM0_level2_quad_clean.evt
Size (bytes)468,423,36079,398,720
Size446.7 MB 75.7 MB
Events in quadrant A2,664,079524,538
Events in quadrant B4,034,581497,136
Events in quadrant C3,274,319503,958
Events in quadrant D3,840,944494,565

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115203
B0155872
C0130352
D0150072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5491120.218539%
B54914367.940266%
C54911943.533054%
D54911813.296303%

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 7135 5492 0 0 0.00% 0.00%
B 7135 5492 318 318 4.46% 5.79%
C 7135 5492 128 128 1.79% 2.33%
D 7135 5492 158 158 2.21% 2.88%

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 10 83 143172 1094.26 638 625 130.3
A 15 169 27032 202.71 638 625 130.3
A 13 6 19641 145.98 638 625 130.3
B 5 172 1265447 10911.0 605 590 115.9
B 4 81 148202 1273.34 605 590 115.9
B 4 232 86477 740.88 605 590 115.9
C 0 10 588969 4140.81 607 613 142.1
C 15 214 224105 1572.92 607 613 142.1
C 1 23 75748 528.8 607 613 142.1
D 7 80 859472 5645.02 617 600 152.1
D 10 118 106375 695.22 617 600 152.1
D 2 153 97848 639.17 617 600 152.1

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