ASTROSAT CZTI

Data Quality Report

Orbit 04234

Creation date: 2024-06-27T14:39:08.601057
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/AS1G05_240T01_9000000536_04234cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04234cztM0_level2_quad_clean.evt
Size (bytes)927,023,040134,015,040
Size884.1 MB 127.8 MB
Events in quadrant A7,541,675792,911
Events in quadrant B6,688,465804,370
Events in quadrant C6,373,115800,793
Events in quadrant D6,595,072765,510

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02724
B02726
C02722
D02724

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151
B0151
C0151
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032543977
B029638891
C028800771
D029676799

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129166214.807990%
B129312191.693605%
C129511311.011505%
D129282892.235458%

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 14867 13113 349 349 2.35% 2.66%
B 14867 13112 41 41 0.28% 0.31%
C 14867 13141 3 3 0.02% 0.02%
D 14867 13118 140 140 0.94% 1.07%

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 0 50 1633097 5414.9 1467 1435 301.3
A 12 247 114378 374.82 1467 1435 301.3
A 15 234 70444 229.02 1467 1435 301.3
B 15 204 321117 1101.7 1508 1473 290.1
B 3 0 234182 802.07 1508 1473 290.1
B 14 167 140877 480.48 1508 1473 290.1
C 9 144 519646 1514.53 1460 1468 342.1
C 7 247 71723 205.34 1460 1468 342.1
C 10 65 49415 140.14 1460 1468 342.1
D 2 232 241567 693.28 1438 1396 346.4
D 2 63 224899 645.17 1438 1396 346.4
D 15 217 131280 374.92 1438 1396 346.4

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