ASTROSAT CZTI

Data Quality Report

Orbit 23663

Creation date: 2024-06-27T18:57:20.426661
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/AS1A08_004T02_9000003496_23663cztM0_level2.evt modeM0/AS1A08_004T02_9000003496_23663cztM0_level2_quad_clean.evt
Size (bytes)295,623,36054,864,000
Size281.9 MB 52.3 MB
Events in quadrant A1,892,302353,576
Events in quadrant B2,118,626361,634
Events in quadrant C1,945,405345,395
Events in quadrant D2,728,778323,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081211
B0873913
C0813314
D01098336

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A393160.152633%
B3927160.407436%
C3926280.713194%
D39211162.958429%

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 5076 3932 0 0 0.00% 0.00%
B 5076 3932 4 4 0.08% 0.10%
C 5076 3932 1 1 0.02% 0.03%
D 5075 3931 106 106 2.09% 2.70%

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 13 254 6915 64.22 490 480 100.2
A 3 137 4345 38.57 490 480 100.2
A 0 226 4184 36.96 490 480 100.2
B 0 229 78198 831.27 491 479 93.5
B 3 64 66840 709.79 491 479 93.5
B 0 189 19787 206.51 491 479 93.5
C 14 238 76816 688.87 473 475 110.8
C 7 247 17570 154.26 473 475 110.8
C 2 16 8227 69.95 473 475 110.8
D 1 52 698584 6169.1 466 452 113.2
D 9 85 75701 664.94 466 452 113.2
D 12 233 65431 574.19 466 452 113.2

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