ASTROSAT CZTI

Data Quality Report

Orbit 35598

Creation date: 2022-04-29T09:15:42.750416
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/AS1A10_065T04_9000005098_35598cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35598cztM0_level2_quad_clean.evt
Size (bytes)416,033,28052,787,520
Size396.8 MB 50.3 MB
Events in quadrant A2,822,641313,067
Events in quadrant B3,122,533313,272
Events in quadrant C3,065,256301,600
Events in quadrant D3,224,298294,200

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117193
B0128332
C0122522
D0131642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5364190.354213%
B53641172.181208%
C53641653.076063%
D53641071.994780%

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 9217 5366 7 7 0.08% 0.13%
B 9217 5366 66 66 0.72% 1.23%
C 9217 5366 132 132 1.43% 2.46%
D 9217 5366 95 95 1.03% 1.77%

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 15 169 248214 1978.72 624 614 125.1
A 10 83 136870 1088.9 624 614 125.1
A 13 6 9609 71.88 624 614 125.1
B 5 172 541458 4481.05 618 604 120.7
B 4 81 42091 343.73 618 604 120.7
B 0 182 37932 309.27 618 604 120.7
C 0 10 489818 3494.85 600 605 140.0
C 15 214 221049 1574.81 600 605 140.0
C 9 187 8134 53.79 600 605 140.0
D 7 80 351639 2382.44 603 587 147.4
D 13 249 298552 2022.16 603 587 147.4
D 2 153 47287 316.93 603 587 147.4

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