ASTROSAT CZTI

Data Quality Report

Orbit 41682

Creation date: 2024-06-27T22:31:28.549792
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_044T21_9000005688_41682cztM0_level2.fits modeM0/AS1A12_044T21_9000005688_41682cztM0_level2_quad_clean.evt
Size (bytes)333,555,84095,198,400
Size318.1 MB 90.8 MB
Events in quadrant A3,144,270636,872
Events in quadrant B2,722,906648,417
Events in quadrant C2,959,217613,238
Events in quadrant D3,062,327572,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129672
B0123242
C0126272
D0134602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5883180.305966%
B5884310.526852%
C5883921.563828%
D5883751.274860%

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 8899 5885 13 13 0.15% 0.22%
B 8900 5886 10 10 0.11% 0.17%
C 8899 5885 90 90 1.01% 1.53%
D 8899 5885 75 75 0.84% 1.27%

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 549659 4120.86 642 628 133.2
A 13 248 65281 485.27 642 628 133.2
A 15 223 19901 144.66 642 628 133.2
B 4 141 93542 742.67 636 618 125.1
B 5 255 58410 461.89 636 618 125.1
B 0 245 34567 271.33 636 618 125.1
C 0 10 282396 1920.05 624 628 146.8
C 15 214 240000 1631.15 624 628 146.8
C 13 61 4138 23.92 624 628 146.8
D 13 249 332776 2149.78 624 605 154.5
D 2 249 157999 1018.64 624 605 154.5
D 2 120 47556 303.86 624 605 154.5

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