ASTROSAT CZTI

Data Quality Report

Orbit 34854

Creation date: 2022-03-10T02:28:30.346486
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/AS1C07_005T01_9000004992_34854cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34854cztM0_level2_quad_clean.evt
Size (bytes)726,837,12082,912,320
Size693.2 MB 79.1 MB
Events in quadrant A8,904,773443,431
Events in quadrant B4,363,078592,242
Events in quadrant C3,148,377580,610
Events in quadrant D5,246,194529,316

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300383
B0163442
C0125632
D0193112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5192230944.472265%
B51925099.803544%
C51921232.369029%
D519259811.517720%

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 7045 5193 2035 2035 28.89% 39.19%
B 7045 5193 422 422 5.99% 8.13%
C 7045 5193 111 111 1.58% 2.14%
D 7045 5193 618 618 8.77% 11.90%

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 6909623 69776.14 496 487 99.0
A 10 83 30098 299.04 496 487 99.0
A 15 237 27294 270.73 496 487 99.0
B 5 172 527415 4745.5 594 581 111.0
B 5 31 350064 3148.0 594 581 111.0
B 5 15 349367 3141.72 594 581 111.0
C 0 207 317410 2354.97 582 585 134.5
C 15 214 235510 1746.2 582 585 134.5
C 0 10 226921 1682.36 582 585 134.5
D 12 227 1520678 10060.21 560 549 151.1
D 8 195 674642 4461.15 560 549 151.1
D 1 52 310942 2054.18 560 549 151.1

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