ASTROSAT CZTI

Data Quality Report

Orbit 22257

Creation date: 2024-06-27T18:38:38.894832
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/AS1A07_018T07_9000003294_22257cztM0_level2.evt modeM0/AS1A07_018T07_9000003294_22257cztM0_level2_quad_clean.evt
Size (bytes)547,678,08086,728,320
Size522.3 MB 82.7 MB
Events in quadrant A3,163,745565,876
Events in quadrant B3,257,648581,105
Events in quadrant C3,270,243549,921
Events in quadrant D6,438,731460,755

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137322
B0138552
C0139272
D0237232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6726170.252751%
B6726370.550104%
C6726590.877193%
D6726122118.153434%

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 8686 6728 0 0 0.00% 0.00%
B 8686 6728 0 0 0.00% 0.00%
C 8686 6728 1 1 0.01% 0.01%
D 8686 6728 921 921 10.60% 13.69%

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 13 254 10114 56.6 820 802 164.5
A 3 137 7317 39.6 820 802 164.5
A 0 226 7023 37.81 820 802 164.5
B 12 111 19127 116.12 822 800 157.8
B 11 111 17515 105.91 822 800 157.8
B 14 111 15380 92.38 822 800 157.8
C 14 238 124350 659.4 795 801 187.4
C 10 22 39785 208.06 795 801 187.4
C 3 9 6649 31.21 795 801 187.4
D 1 52 3310305 18762.98 729 709 176.4
D 2 136 278691 1575.95 729 709 176.4
D 12 227 43050 240.04 729 709 176.4

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