ASTROSAT CZTI

Data Quality Report

Orbit 37379

Creation date: 2024-06-27T21:39:13.904740
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/AS1T05_048T01_9000005318_37379cztM0_level2.evt modeM0/AS1T05_048T01_9000005318_37379cztM0_level2_quad_clean.evt
Size (bytes)591,906,24075,795,840
Size564.5 MB 72.3 MB
Events in quadrant A2,682,655507,050
Events in quadrant B2,744,644517,315
Events in quadrant C2,864,342519,377
Events in quadrant D9,276,448380,292

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111393
B0115212
C0115962
D0312302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5291110.207900%
B5291380.718201%
C5291510.963901%
D5291222342.014742%

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 7055 5292 2 2 0.03% 0.04%
B 7055 5292 19 19 0.27% 0.36%
C 7055 5292 40 40 0.57% 0.76%
D 7055 5292 2189 2189 31.03% 41.36%

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 277155 2246.97 608 597 123.1
A 13 6 23981 189.99 608 597 123.1
A 7 3 12981 100.62 608 597 123.1
B 0 190 109753 933.86 605 591 116.9
B 5 172 73589 624.48 605 591 116.9
B 0 229 47976 405.37 605 591 116.9
C 1 23 252218 1835.03 592 597 137.1
C 15 214 227072 1651.65 592 597 137.1
C 0 10 64390 465.23 592 597 137.1
D 12 235 6806414 52994.93 519 505 128.4
D 13 249 189202 1469.31 519 505 128.4
D 2 249 158708 1231.86 519 505 128.4

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