ASTROSAT CZTI

Data Quality Report

Orbit 39343

Creation date: 2024-06-27T22:03:27.826572
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_9000005470_39343cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39343cztM0_level2_quad_clean.evt
Size (bytes)396,480,96093,600,000
Size378.1 MB 89.3 MB
Events in quadrant A2,767,984637,026
Events in quadrant B2,866,012656,091
Events in quadrant C2,666,373627,792
Events in quadrant D5,954,361533,696

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116973
B0122822
C0114592
D0214962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5425120.221198%
B5425530.976959%
C5425120.221198%
D542555110.156682%

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 7308 5426 6 6 0.08% 0.11%
B 7308 5426 35 35 0.48% 0.65%
C 7308 5426 4 4 0.05% 0.07%
D 7308 5426 517 517 7.07% 9.53%

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 421716 3462.53 601 588 121.6
A 13 248 16381 129.85 601 588 121.6
A 13 254 7107 53.6 601 588 121.6
B 5 184 393418 3422.24 599 581 114.8
B 5 172 107436 930.88 599 581 114.8
B 12 111 14606 122.18 599 581 114.8
C 15 214 245572 1804.48 587 590 135.8
C 9 187 105575 773.29 587 590 135.8
C 0 10 11407 79.68 587 590 135.8
D 12 235 3523824 25656.46 562 546 137.3
D 2 249 187765 1363.32 562 546 137.3
D 2 16 54506 392.93 562 546 137.3

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