ASTROSAT CZTI

Data Quality Report

Orbit 43834

Creation date: 2024-06-27T22:56:21.052006
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/AS1A13_018T01_9000005906_43834cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43834cztM0_level2_quad_clean.evt
Size (bytes)639,095,040100,114,560
Size609.5 MB 95.5 MB
Events in quadrant A5,782,059679,595
Events in quadrant B5,855,135660,767
Events in quadrant C4,524,419700,707
Events in quadrant D7,009,077551,225

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217674
B0215731
C0176501
D0252021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62865017.970092%
B628788814.124384%
C62871532.433593%
D6287111417.719103%

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 7361 6286 333 333 4.52% 5.30%
B 7362 6287 707 707 9.60% 11.25%
C 7362 6287 58 58 0.79% 0.92%
D 7362 6287 1028 1028 13.96% 16.35%

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 15 223 1644218 10975.67 723 709 149.7
A 10 83 949954 6339.24 723 709 149.7
A 2 79 254801 1696.87 723 709 149.7
B 0 200 2142390 15536.46 703 684 137.9
B 5 235 325751 2358.12 703 684 137.9
B 4 170 207202 1498.13 703 684 137.9
C 3 233 1575605 9209.25 720 725 171.0
C 15 158 64861 375.04 720 725 171.0
C 14 254 44595 256.53 720 725 171.0
D 12 33 1556600 9223.65 665 643 168.7
D 5 235 1454433 8618.0 665 643 168.7
D 1 52 927244 5492.85 665 643 168.7

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