ASTROSAT CZTI

Data Quality Report

Orbit 40953

Creation date: 2024-06-27T22:22:38.379849
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_052T04_9000005582_40953cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40953cztM0_level2_quad_clean.evt
Size (bytes)297,613,44088,666,560
Size283.8 MB 84.6 MB
Events in quadrant A2,792,155614,803
Events in quadrant B2,274,759626,111
Events in quadrant C2,694,484571,743
Events in quadrant D2,871,626527,316

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112183
B099122
C0109382
D0119762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4919160.325269%
B491960.121976%
C4919911.849970%
D49192084.228502%

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 7011 4920 6 6 0.09% 0.12%
B 7011 4920 0 0 0.00% 0.00%
C 7011 4920 92 92 1.31% 1.87%
D 7011 4920 180 180 2.57% 3.66%

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 480550 4155.55 571 559 115.5
A 12 189 98578 848.61 571 559 115.5
A 13 254 8969 72.81 571 559 115.5
B 0 190 26792 241.83 567 553 108.5
B 3 112 23614 212.54 567 553 108.5
B 12 111 13412 118.51 567 553 108.5
C 0 10 262085 2080.95 543 546 125.7
C 15 214 227493 1805.72 543 546 125.7
C 14 254 51348 404.21 543 546 125.7
D 13 249 543671 4147.98 539 524 130.9
D 12 233 151947 1156.41 539 524 130.9
D 2 234 26096 195.29 539 524 130.9

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