ASTROSAT CZTI

Data Quality Report

Orbit 04675

Creation date: 2024-06-27T14:45:30.030523
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/AS1G05_251T02_9000000588_04675cztM0_level2.evt modeM0/AS1G05_251T02_9000000588_04675cztM0_level2_quad_clean.evt
Size (bytes)629,219,520103,504,320
Size600.1 MB 98.7 MB
Events in quadrant A2,867,765708,344
Events in quadrant B3,128,648715,808
Events in quadrant C2,836,626715,049
Events in quadrant D9,798,170556,914

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129603
B0135642
C0127732
D0334572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6267220.351045%
B6267600.957396%
C6267130.207436%
D6267225435.966172%

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 7597 6268 2 2 0.03% 0.03%
B 7597 6268 15 15 0.20% 0.24%
C 7597 6268 0 0 0.00% 0.00%
D 7597 6268 2065 2065 27.18% 32.95%

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 12 133 31374 211.04 724 710 145.3
A 13 251 13627 88.9 724 710 145.3
A 8 15 11368 73.35 724 710 145.3
B 15 204 105144 758.76 740 722 137.6
B 7 252 79277 570.81 740 722 137.6
B 0 219 18227 127.2 740 722 137.6
C 9 68 8622 47.64 720 723 165.8
C 13 61 5838 30.85 720 723 165.8
C 12 4 5621 29.54 720 723 165.8
D 8 112 6605278 45841.06 605 589 144.1
D 2 63 332486 2303.59 605 589 144.1
D 2 234 154290 1066.79 605 589 144.1

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