ASTROSAT CZTI

Data Quality Report

Orbit 16726

Creation date: 2024-06-27T17:26:50.431771
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/AS1A05_059T07_9000002480_16726cztM0_level2.evt modeM0/AS1A05_059T07_9000002480_16726cztM0_level2_quad_clean.evt
Size (bytes)1,135,886,400262,082,880
Size1.1 GB 249.9 MB
Events in quadrant A10,488,1081,712,006
Events in quadrant B7,660,8071,791,137
Events in quadrant C7,144,8751,738,979
Events in quadrant D8,127,2471,695,607

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0408984
B0321793
C0304883
D0338693

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02940
C02940
D02940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1449412018.286187%
B144943252.242307%
C144942591.786946%
D144944853.346212%

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 16285 14498 741 741 4.55% 5.11%
B 16285 14498 61 61 0.37% 0.42%
C 16285 14498 13 13 0.08% 0.09%
D 16285 14498 250 250 1.54% 1.72%

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 15 174 3866345 11576.1 1662 1623 333.9
A 10 234 132507 392.04 1662 1623 333.9
A 15 190 58126 169.24 1662 1623 333.9
B 15 35 474644 1467.75 1700 1655 322.3
B 10 16 174962 537.8 1700 1655 322.3
B 15 36 96485 294.27 1700 1655 322.3
C 0 207 303331 796.61 1635 1645 378.7
C 14 238 249391 654.18 1635 1645 378.7
C 3 233 204563 535.81 1635 1645 378.7
D 10 70 757898 1887.51 1650 1594 400.7
D 2 16 274434 680.93 1650 1594 400.7
D 13 248 198703 491.92 1650 1594 400.7

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