ASTROSAT CZTI

Data Quality Report

Orbit 41274

Creation date: 2024-06-27T22:26:52.203673
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_9000005638_41274cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41274cztM0_level2_quad_clean.evt
Size (bytes)313,007,04089,268,480
Size298.5 MB 85.1 MB
Events in quadrant A3,057,037597,739
Events in quadrant B2,551,330608,851
Events in quadrant C2,919,563575,787
Events in quadrant D2,644,123548,543

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122023
B0111042
C0120362
D0115682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5317110.206884%
B5317200.376152%
C53171793.366560%
D5317240.451382%

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 7351 5318 5 5 0.07% 0.09%
B 7351 5318 11 11 0.15% 0.21%
C 7351 5318 176 176 2.39% 3.31%
D 7351 5318 27 27 0.37% 0.51%

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 515235 4274.12 588 575 120.4
A 6 10 145551 1203.99 588 575 120.4
A 2 79 66868 550.55 588 575 120.4
B 0 186 80985 721.27 579 563 111.5
B 7 202 80227 714.47 579 563 111.5
B 5 255 58037 515.46 579 563 111.5
C 0 10 495395 3781.72 562 565 130.8
C 15 214 225650 1720.2 562 565 130.8
C 13 61 3690 23.88 562 565 130.8
D 1 52 204170 1453.98 578 564 140.0
D 2 249 63757 451.27 578 564 140.0
D 12 233 50526 356.79 578 564 140.0

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