ASTROSAT CZTI

Data Quality Report

Orbit 40024

Creation date: 2024-06-27T22:11:23.864878
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_054T03_9000005516_40024cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40024cztM0_level2_quad_clean.evt
Size (bytes)361,454,40096,658,560
Size344.7 MB 92.2 MB
Events in quadrant A3,299,815650,700
Events in quadrant B2,746,637682,728
Events in quadrant C3,602,289618,128
Events in quadrant D3,296,893585,323

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134033
B0119032
C0140772
D0136312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5575561.004484%
B5575440.789238%
C55753446.170404%
D55751352.421525%

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 9251 5577 36 36 0.39% 0.65%
B 9251 5577 22 22 0.24% 0.39%
C 9251 5577 310 310 3.35% 5.56%
D 9251 5577 126 126 1.36% 2.26%

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 448059 3556.81 621 610 125.8
A 12 189 248415 1969.82 621 610 125.8
A 13 248 131865 1043.36 621 610 125.8
B 4 171 272241 2275.48 625 607 119.4
B 12 111 15042 120.92 625 607 119.4
B 11 111 13731 109.94 625 607 119.4
C 14 254 1049298 7584.18 590 596 138.3
C 15 214 222134 1602.16 590 596 138.3
C 0 10 18043 126.18 590 596 138.3
D 12 227 353506 2379.91 603 586 148.3
D 13 249 198948 1337.65 603 586 148.3
D 2 250 197860 1330.31 603 586 148.3

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