ASTROSAT CZTI

Data Quality Report

Orbit 16905

Creation date: 2024-06-27T17:29:19.265826
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/AS1A05_004T03_9000002508_16905cztM0_level2.evt modeM0/AS1A05_004T03_9000002508_16905cztM0_level2_quad_clean.evt
Size (bytes)647,809,92058,628,160
Size617.8 MB 55.9 MB
Events in quadrant A9,164,981279,679
Events in quadrant B3,161,153375,861
Events in quadrant C3,174,228355,744
Events in quadrant D3,710,706342,625

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312121
B0128661
C0129851
D0148801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6019298849.642798%
B6020540.897010%
C6020570.946844%
D6020821.362126%

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 7320 6021 2167 2167 29.60% 35.99%
B 7321 6022 1 1 0.01% 0.02%
C 7321 6022 0 0 0.00% 0.00%
D 7321 6022 30 30 0.41% 0.50%

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 15 174 6644226 51860.91 646 635 128.1
A 12 189 21764 164.94 646 635 128.1
A 9 143 11969 88.47 646 635 128.1
B 0 189 24147 158.4 790 772 147.6
B 12 111 16808 108.67 790 772 147.6
B 0 219 14781 94.93 790 772 147.6
C 3 233 146228 852.81 745 751 170.6
C 14 238 118440 689.91 745 751 170.6
C 13 61 5450 27.55 745 751 170.6
D 1 52 474586 2610.99 750 730 181.5
D 12 235 378367 2080.81 750 730 181.5
D 2 234 26276 140.76 750 730 181.5

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