ASTROSAT CZTI

Data Quality Report

Orbit 26903

Creation date: 2024-06-27T19:34:17.465475
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/AS1A09_044T01_9000003888_26903cztM0_level2.evt modeM0/AS1A09_044T01_9000003888_26903cztM0_level2_quad_clean.evt
Size (bytes)1,141,853,760166,610,880
Size1.1 GB 158.9 MB
Events in quadrant A6,228,7371,078,874
Events in quadrant B7,098,4651,088,721
Events in quadrant C5,870,1141,065,460
Events in quadrant D14,544,968952,426

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263180
B0292160
C0255340
D0518920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12444770.618772%
B124442331.872388%
C124441351.084860%
D12444193915.581806%

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 14044 12446 2 2 0.01% 0.02%
B 14044 12445 97 97 0.69% 0.78%
C 14044 12446 2 2 0.01% 0.02%
D 14044 12446 1880 1880 13.39% 15.11%

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 0 13 300033 988.22 1505 1476 302.1
A 5 168 92509 301.32 1505 1476 302.1
A 12 189 22655 70.1 1505 1476 302.1
B 0 190 463603 1626.04 1495 1458 284.2
B 3 64 441411 1547.96 1495 1458 284.2
B 10 246 87578 303.01 1495 1458 284.2
C 14 238 231417 679.32 1439 1449 338.5
C 15 208 18163 49.37 1439 1449 338.5
C 13 61 10068 25.46 1439 1449 338.5
D 7 80 3755516 10764.34 1364 1331 348.8
D 1 52 3565518 10219.56 1364 1331 348.8
D 12 233 1333754 3820.44 1364 1331 348.8

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