ASTROSAT CZTI

Data Quality Report

Orbit 44695

Creation date: 2024-06-27T23:05:24.489728
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_073T04_9000006010_44695cztM0_level2.fits modeM0/AS1A13_073T04_9000006010_44695cztM0_level2_quad_clean.evt
Size (bytes)801,452,160113,918,400
Size764.3 MB 108.6 MB
Events in quadrant A7,774,359773,411
Events in quadrant B4,996,057818,980
Events in quadrant C3,645,438841,673
Events in quadrant D12,634,205461,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290802
B0202052
C0167692
D04313515

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A796290611.379050%
B79626608.289375%
C79631742.185106%
D7959345243.372283%

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 8967 7965 299 299 3.33% 3.75%
B 8967 7964 172 172 1.92% 2.16%
C 8968 7966 2 2 0.02% 0.03%
D 8966 7960 2950 2950 32.90% 37.06%

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 2154772 11539.16 896 873 186.7
A 15 223 1653326 8852.75 896 873 186.7
A 10 248 236658 1263.18 896 873 186.7
B 5 255 1021079 5629.93 906 875 181.2
B 0 189 250518 1377.64 906 875 181.2
B 0 183 44022 238.1 906 875 181.2
C 14 254 25653 115.29 914 915 214.6
C 2 14 20870 93.0 914 915 214.6
C 3 233 11305 48.42 914 915 214.6
D 1 52 7037349 43310.53 642 621 162.5
D 11 241 2141543 13177.21 642 621 162.5
D 13 249 338184 2077.67 642 621 162.5

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