ASTROSAT CZTI

Data Quality Report

Orbit 48427

Creation date: 2024-09-11T07:49:53.618367
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/AS1A13_029T01_9000006426_48427cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48427cztM0_level2_quad_clean.evt
Size (bytes)1,356,148,800287,867,520
Size1.3 GB 274.5 MB
Events in quadrant A18,977,2041,902,438
Events in quadrant B10,363,9611,874,560
Events in quadrant C8,174,3831,925,135
Events in quadrant D11,221,6181,708,398

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0688722
B0449182
C0391312
D0472522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189288954.728445%
B1892811616.133770%
C189291050.554704%
D189296423.391621%

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 19918 18930 145 145 0.73% 0.77%
B 19918 18930 519 519 2.61% 2.74%
C 19919 18931 13 13 0.07% 0.07%
D 19919 18931 379 379 1.90% 2.00%

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 10696202 25412.8 2021 1980 420.8
A 13 248 402255 951.18 2021 1980 420.8
A 7 3 60823 139.83 2021 1980 420.8
B 12 16 2275920 5886.91 1975 1914 386.3
B 5 255 81796 206.8 1975 1914 386.3
B 12 111 50340 125.36 1975 1914 386.3
C 12 2 231597 485.64 2017 2028 472.7
C 15 208 31587 62.53 2017 2028 472.7
C 14 254 29004 57.07 2017 2028 472.7
D 2 165 831558 1655.3 1985 1925 501.2
D 12 233 779883 1552.2 1985 1925 501.2
D 2 249 740409 1473.44 1985 1925 501.2

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