ASTROSAT CZTI

Data Quality Report

Orbit 38161

Creation date: 2024-06-27T21:49:11.037320
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/AS1A07_145T01_9000005370_38161cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38161cztM0_level2_quad_clean.evt
Size (bytes)297,964,80091,581,120
Size284.2 MB 87.3 MB
Events in quadrant A2,736,831612,615
Events in quadrant B2,517,007630,409
Events in quadrant C2,540,028603,430
Events in quadrant D2,822,588555,508

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112693
B0110862
C0107942
D0118542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5301140.264101%
B5301460.867761%
C530170.132051%
D5301310.584795%

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 7064 5302 8 8 0.11% 0.15%
B 7064 5302 23 23 0.33% 0.43%
C 7064 5302 4 4 0.06% 0.08%
D 7064 5302 31 31 0.44% 0.58%

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 366120 3000.51 600 588 121.8
A 12 189 24678 197.75 600 588 121.8
A 9 143 12859 100.73 600 588 121.8
B 4 171 108991 934.75 596 582 116.0
B 5 172 63794 545.04 596 582 116.0
B 12 111 14444 119.52 596 582 116.0
C 15 214 223248 1644.21 581 584 135.4
C 1 23 32927 238.83 581 584 135.4
C 0 10 14691 104.17 581 584 135.4
D 12 235 131597 922.57 582 568 142.0
D 2 250 101338 709.52 582 568 142.0
D 13 171 76844 537.06 582 568 142.0

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