ASTROSAT CZTI

Data Quality Report

Orbit 38968

Creation date: 2024-06-27T21:58:46.629699
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_057T01_9000005418_38968cztM0_level2.fits modeM0/AS1A12_057T01_9000005418_38968cztM0_level2_quad_clean.evt
Size (bytes)196,041,60057,643,200
Size187.0 MB 55.0 MB
Events in quadrant A1,698,297397,883
Events in quadrant B1,690,158403,371
Events in quadrant C1,563,382388,550
Events in quadrant D2,066,352339,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069902
B069951
C065901
D082661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3041120.394607%
B3041361.183821%
C304120.065768%
D30411926.313713%

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 5074 3042 6 6 0.12% 0.20%
B 5074 3042 29 29 0.57% 0.95%
C 5074 3042 1 1 0.02% 0.03%
D 5074 3042 184 184 3.63% 6.05%

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 235048 3166.0 361 355 74.1
A 13 248 58070 778.57 361 355 74.1
A 13 6 6171 78.46 361 355 74.1
B 5 172 145535 2114.78 360 352 68.7
B 5 184 91107 1321.96 360 352 68.7
B 0 230 22021 315.64 360 352 68.7
C 15 214 133413 1601.97 355 358 83.1
C 14 254 36881 439.73 355 358 83.1
C 0 10 4572 50.74 355 358 83.1
D 2 249 471779 5662.47 342 332 83.3
D 12 227 96091 1150.14 342 332 83.3
D 2 250 47523 566.8 342 332 83.3

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