ASTROSAT CZTI

Data Quality Report

Orbit 39146

Creation date: 2024-06-27T22:01:07.430768
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_054T02_9000005444_39146cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39146cztM0_level2_quad_clean.evt
Size (bytes)428,241,60089,847,360
Size408.4 MB 85.7 MB
Events in quadrant A2,906,033630,600
Events in quadrant B2,416,096634,401
Events in quadrant C2,701,826602,622
Events in quadrant D7,405,733472,010

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120283
B0110232
C0114952
D0257682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5434320.588885%
B543480.147221%
C5434130.239234%
D5434118021.715127%

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 7108 5435 18 18 0.25% 0.33%
B 7108 5435 4 4 0.06% 0.07%
C 7108 5435 7 7 0.10% 0.13%
D 7108 5435 1104 1104 15.53% 20.31%

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 436014 3556.63 602 590 122.4
A 0 230 74735 605.63 602 590 122.4
A 15 223 26295 209.96 602 590 122.4
B 5 172 29927 253.01 597 579 116.0
B 15 85 22821 191.75 597 579 116.0
B 12 111 14475 119.8 597 579 116.0
C 15 214 225984 1660.01 586 589 135.8
C 9 187 109003 798.46 586 589 135.8
C 2 16 63103 460.41 586 589 135.8
D 12 235 4506669 32914.09 550 536 136.9
D 2 249 348793 2543.77 550 536 136.9
D 2 250 75852 550.13 550 536 136.9

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