ASTROSAT CZTI

Data Quality Report

Orbit 40000

Creation date: 2024-06-27T22:11:06.972139
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/AS1A12_054T03_9000005516_40000cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40000cztM0_level2_quad_clean.evt
Size (bytes)360,495,36084,853,440
Size343.8 MB 80.9 MB
Events in quadrant A2,915,927580,396
Events in quadrant B2,879,800590,097
Events in quadrant C2,606,803573,103
Events in quadrant D4,532,756458,415

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116903
B0121032
C0110172
D0172272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5249410.781101%
B52491452.762431%
C5249120.228615%
D524978214.898076%

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 7072 5250 27 27 0.38% 0.51%
B 7072 5250 80 80 1.13% 1.52%
C 7072 5250 9 9 0.13% 0.17%
D 7072 5249 622 622 8.80% 11.85%

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 467038 3949.32 581 571 118.1
A 13 248 159253 1343.47 581 571 118.1
A 15 223 21708 178.96 581 571 118.1
B 4 171 548272 4883.31 573 556 112.2
B 0 230 36849 323.58 573 556 112.2
B 0 221 23240 202.25 573 556 112.2
C 15 214 222166 1650.33 569 574 134.3
C 14 254 91593 677.87 569 574 134.3
C 0 10 43635 320.7 569 574 134.3
D 2 250 2020909 15441.29 529 514 130.8
D 12 227 210504 1604.89 529 514 130.8
D 12 233 107482 817.52 529 514 130.8

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