ASTROSAT CZTI

Data Quality Report

Orbit 03955

Creation date: 2024-06-27T14:35:38.786056
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_246T02_9000000504_03955cztM0_level2.evt modeM0/AS1G05_246T02_9000000504_03955cztM0_level2_quad_clean.evt
Size (bytes)544,178,88068,086,080
Size519.0 MB 64.9 MB
Events in quadrant A5,087,314389,142
Events in quadrant B3,709,341391,141
Events in quadrant C3,351,296388,595
Events in quadrant D3,828,649375,968

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201452
B0157491
C0153371
D0168771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74253064.121212%
B74251632.195286%
C74251281.723906%
D74252052.760943%

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 7725 7426 53 53 0.69% 0.71%
B 7725 7426 8 8 0.10% 0.11%
C 7725 7426 1 1 0.01% 0.01%
D 7725 7426 77 77 1.00% 1.04%

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 8 15 689363 3862.8 863 846 178.2
A 0 199 490437 2746.76 863 846 178.2
A 0 118 329143 1841.85 863 846 178.2
B 4 81 118634 684.51 881 861 172.1
B 15 204 82719 475.77 881 861 172.1
B 3 0 61428 352.02 881 861 172.1
C 1 16 38850 191.3 847 850 198.6
C 13 61 7188 31.91 847 850 198.6
C 7 247 2219 6.89 847 850 198.6
D 2 232 267937 1321.9 837 812 202.1
D 2 63 179413 883.83 837 812 202.1
D 13 239 115571 567.9 837 812 202.1

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