ASTROSAT CZTI

Data Quality Report

Orbit 47759

Creation date: 2024-07-28T05:10:54.392379
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/AS1C09_004T04_9000006346_47759cztM0_level2.fits modeM0/AS1C09_004T04_9000006346_47759cztM0_level2_quad_clean.evt
Size (bytes)1,483,205,760285,629,760
Size1.4 GB 272.4 MB
Events in quadrant A19,819,4751,897,848
Events in quadrant B10,424,3701,917,181
Events in quadrant C11,165,8941,813,766
Events in quadrant D12,044,8401,724,932

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710343
B0444383
C0471014
D0494663

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187748264.399702%
B187746393.403643%
C187739405.007191%
D187737604.048367%

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 20194 18777 294 294 1.46% 1.57%
B 20194 18777 231 231 1.14% 1.23%
C 20193 18776 608 608 3.01% 3.24%
D 20193 18776 568 568 2.81% 3.03%

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 11200982 26645.34 2022 1975 420.3
A 15 174 313623 741.49 2022 1975 420.3
A 9 191 150671 353.79 2022 1975 420.3
B 4 171 588110 1489.31 2017 1951 393.6
B 12 18 556211 1408.26 2017 1951 393.6
B 0 200 295696 746.34 2017 1951 393.6
C 12 2 2851181 6182.35 1961 1967 460.9
C 14 254 621671 1344.66 1961 1967 460.9
C 12 250 25240 50.5 1961 1967 460.9
D 7 67 910091 1810.61 1992 1926 501.6
D 12 2 788003 1567.21 1992 1926 501.6
D 2 165 727206 1446.0 1992 1926 501.6

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