ASTROSAT CZTI

Data Quality Report

Orbit 40166

Creation date: 2024-06-27T22:13:21.747133
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_068T01_9000005526_40166cztM0_level2.fits modeM0/AS1A12_068T01_9000005526_40166cztM0_level2_quad_clean.evt
Size (bytes)1,175,063,040192,245,760
Size1.1 GB 183.3 MB
Events in quadrant A7,610,3411,406,483
Events in quadrant B7,176,3871,444,151
Events in quadrant C20,477,065779,805
Events in quadrant D7,219,0171,284,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305436
B0301804
C0694484
D0303954

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130942241.710707%
B130943692.818085%
C13094613246.830609%
D130942011.535054%

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 34046 13095 179 179 0.53% 1.37%
B 34046 13095 244 244 0.72% 1.86%
C 34046 13093 6105 6105 17.93% 46.63%
D 34046 13093 193 193 0.57% 1.47%

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 1104803 3727.87 1450 1418 296.0
A 13 248 612723 2065.34 1450 1418 296.0
A 7 3 104849 349.45 1450 1418 296.0
B 5 255 530603 1885.29 1443 1402 280.7
B 5 172 523404 1859.64 1443 1402 280.7
B 4 171 231916 821.21 1443 1402 280.7
C 9 187 15735959 63150.99 1072 1080 249.2
C 15 214 416216 1666.12 1072 1080 249.2
C 10 20 41171 160.9 1072 1080 249.2
D 13 249 501352 1427.1 1425 1385 350.3
D 9 19 287273 816.04 1425 1385 350.3
D 12 233 191530 542.75 1425 1385 350.3

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