ASTROSAT CZTI

Data Quality Report

Orbit 19608

Creation date: 2024-06-27T18:04:42.739757
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/AS1T03_115T01_9000002914_19608cztM0_level2.evt modeM0/AS1T03_115T01_9000002914_19608cztM0_level2_quad_clean.evt
Size (bytes)447,177,600101,759,040
Size426.5 MB 97.0 MB
Events in quadrant A3,202,929662,763
Events in quadrant B3,353,060670,610
Events in quadrant C3,190,414651,038
Events in quadrant D3,348,011637,434

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139322
B0144672
C0138402
D0147232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6590300.455235%
B6590751.138088%
C6590661.001517%
D6590460.698027%

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 7640 6591 1 1 0.01% 0.02%
B 7640 6591 28 28 0.37% 0.42%
C 7640 6591 0 0 0.00% 0.00%
D 7640 6591 24 24 0.31% 0.36%

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 9 143 97217 602.54 795 780 160.1
A 5 16 28755 174.79 795 780 160.1
A 11 29 8351 47.3 795 780 160.1
B 7 220 148963 984.73 793 772 150.5
B 4 216 26566 171.4 793 772 150.5
B 3 64 22520 144.52 793 772 150.5
C 14 238 119726 650.24 770 775 182.9
C 3 233 65688 354.85 770 775 182.9
C 13 61 5407 25.32 770 775 182.9
D 1 52 181414 954.59 775 752 189.3
D 10 199 88926 465.9 775 752 189.3
D 2 16 81119 424.65 775 752 189.3

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