ASTROSAT CZTI

Data Quality Report

Orbit 54834

Creation date: 2025-11-16T16:56:15.549052
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/AS1A14_039T06_9000006526_54834cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54834cztM0_level2_quad_clean.evt
Size (bytes)382,124,16087,949,440
Size364.4 MB 83.9 MB
Events in quadrant A2,715,548580,251
Events in quadrant B2,682,025623,225
Events in quadrant C3,066,941552,777
Events in quadrant D5,209,041484,342

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127041
B0126291
C0135441
D0195761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60541141.883053%
B6054941.552692%
C60551021.684558%
D605462910.389825%

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 7079 6055 38 38 0.54% 0.63%
B 7079 6055 12 12 0.17% 0.20%
C 7080 6056 37 37 0.52% 0.61%
D 7079 6055 481 481 6.79% 7.94%

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 5 241 127274 789.35 649 631 160.4
A 6 161 18969 114.3 649 631 160.4
A 13 248 18583 111.89 649 631 160.4
B 5 236 59488 427.36 635 610 137.8
B 10 247 53873 386.6 635 610 137.8
B 5 185 25471 180.45 635 610 137.8
C 13 3 275052 1590.35 625 620 172.6
C 12 252 118490 683.06 625 620 172.6
C 6 223 94434 543.65 625 620 172.6
D 11 176 1790155 10442.79 600 573 171.4
D 5 38 222246 1293.53 600 573 171.4
D 6 42 185444 1078.78 600 573 171.4

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