ASTROSAT CZTI

Data Quality Report

Orbit 43676

Creation date: 2024-06-27T22:54:23.842206
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/AS1A12_018T01_9000005896_43676cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43676cztM0_level2_quad_clean.evt
Size (bytes)876,006,72091,831,680
Size835.4 MB 87.6 MB
Events in quadrant A9,100,865703,767
Events in quadrant B3,352,762723,024
Events in quadrant C11,546,655421,399
Events in quadrant D7,980,438524,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310311
B0137141
C0382871
D0277211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A579061710.656304%
B57911342.313935%
C5791354061.129339%
D5791162127.991711%

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 6925 5791 230 230 3.32% 3.97%
B 6926 5792 26 26 0.38% 0.45%
C 6926 5792 3284 3284 47.42% 56.70%
D 6926 5792 1393 1393 20.11% 24.05%

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 15 222 5116942 37836.23 664 652 135.2
A 10 83 768435 5677.95 664 652 135.2
A 14 63 419569 3098.0 664 652 135.2
B 5 235 150121 1165.86 673 655 128.2
B 4 171 143987 1118.01 673 655 128.2
B 0 230 118211 916.96 673 655 128.2
C 15 142 7945179 81172.43 420 423 97.9
C 15 157 927400 9471.02 420 423 97.9
C 15 158 761460 7775.6 420 423 97.9
D 13 187 2557478 15967.45 566 554 160.1
D 5 235 506529 3159.71 566 554 160.1
D 1 52 474710 2961.0 566 554 160.1

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