ASTROSAT CZTI

Data Quality Report

Orbit 38511

Creation date: 2024-06-27T21:53:44.342169
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_018T01_9000005386_38511cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38511cztM0_level2_quad_clean.evt
Size (bytes)459,046,08096,255,360
Size437.8 MB 91.8 MB
Events in quadrant A3,287,584670,434
Events in quadrant B6,346,222591,112
Events in quadrant C2,854,963653,906
Events in quadrant D4,034,718577,155

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134793
B0230142
C0122542
D0161472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6031530.878793%
B6031101016.746808%
C6031100.165810%
D60313595.952578%

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 7314 6032 47 47 0.64% 0.78%
B 7314 6032 796 796 10.88% 13.20%
C 7314 6032 2 2 0.03% 0.03%
D 7314 6032 288 288 3.94% 4.77%

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 433410 3185.45 668 654 135.9
A 9 143 177777 1303.78 668 654 135.9
A 13 248 67748 493.87 668 654 135.9
B 8 3 3480984 29214.96 626 609 119.1
B 0 183 138971 1161.44 626 609 119.1
B 5 200 99023 826.11 626 609 119.1
C 15 214 254074 1664.84 652 655 152.2
C 14 254 19883 126.32 652 655 152.2
C 0 10 19619 124.58 652 655 152.2
D 12 233 461493 2935.68 639 621 157.0
D 12 235 307172 1952.68 639 621 157.0
D 13 249 282553 1795.86 639 621 157.0

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