ASTROSAT CZTI

Data Quality Report

Orbit 00175

Creation date: 2024-06-27T13:57:25.185019
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/AS1P01_134T02_9000000010_00175cztM0_level2.evt modeM0/AS1P01_134T02_9000000010_00175cztM0_level2_quad_clean.evt
Size (bytes)256,063,68023,742,720
Size244.2 MB 22.6 MB
Events in quadrant A1,559,275161,641
Events in quadrant B1,629,075168,473
Events in quadrant C1,572,364163,587
Events in quadrant D2,896,227117,909

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0311
C0311
D0311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12293509697361
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06284630
B06488638
C06322643
D0108141117

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143040.279720%
B142800.000000%
C142720.140154%
D142453737.710674%

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 1574 1431 19 19 1.21% 1.33%
B 1575 1432 16 16 1.02% 1.12%
C 1574 1429 22 22 1.40% 1.54%
D 1568 1425 693 693 44.20% 48.63%

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 14 10 21258 235.66 392 389 88.6
A 0 96 10849 118.12 392 389 88.6
A 0 86 5664 59.57 392 389 88.6
B 0 212 11733 115.11 418 421 98.3
B 5 216 8292 80.1 418 421 98.3
B 2 253 4332 39.8 418 421 98.3
C 12 48 14775 131.39 387 404 109.4
C 10 38 7710 66.8 387 404 109.4
C 0 218 5691 48.34 387 404 109.4
D 2 121 1759730 20417.06 278 285 86.2
D 13 89 20573 235.43 278 285 86.2
D 12 14 8873 99.66 278 285 86.2

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