ASTROSAT CZTI

Data Quality Report

Orbit 44236

Creation date: 2024-06-27T23:00:49.051124
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_074T01_9000005974_44236cztM0_level2.fits modeM0/AS1A13_074T01_9000005974_44236cztM0_level2_quad_clean.evt
Size (bytes)1,168,493,760250,888,320
Size1.1 GB 239.3 MB
Events in quadrant A11,974,6901,689,417
Events in quadrant B9,483,5821,724,829
Events in quadrant C9,291,3071,600,958
Events in quadrant D11,221,5641,437,801

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03340
B03340
C03340
D03340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0495639
B0392142
C0396432
D04511922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A165724682.824041%
B165756163.716440%
C1657510266.190045%
D1657111957.211393%

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 17040 16577 82 82 0.48% 0.49%
B 17040 16577 160 160 0.94% 0.97%
C 17040 16577 357 357 2.10% 2.15%
D 17040 16575 759 759 4.45% 4.58%

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 3548378 9221.82 1842 1800 384.6
A 15 223 1067788 2771.78 1842 1800 384.6
A 7 3 88635 225.79 1842 1800 384.6
B 0 219 366661 1018.12 1826 1767 358.4
B 0 200 280026 776.39 1826 1767 358.4
B 0 155 246090 681.7 1826 1767 358.4
C 14 254 1697656 4116.01 1745 1755 412.0
C 3 233 300287 724.55 1745 1755 412.0
C 4 254 288049 694.84 1745 1755 412.0
D 13 249 2530658 5613.79 1760 1702 450.5
D 1 52 312094 689.01 1760 1702 450.5
D 13 171 262921 579.86 1760 1702 450.5

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