ASTROSAT CZTI

Data Quality Report

Orbit 20230514_T05_102T01_9000005634_level2

Creation date: 2023-05-16T08:30:23.045197
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/AS1T05_102T01_9000005634cztM0_level2.fits modeM0/AS1T05_102T01_9000005634cztM0_level2_quad_clean.evt
Size (bytes)668,203,200619,963,200
Size637.2 MB 591.2 MB
Events in quadrant A3,963,2603,460,207
Events in quadrant B3,852,4763,628,038
Events in quadrant C3,936,7723,468,149
Events in quadrant D3,435,3303,172,557

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020610
B01709070
C01751740
D01773930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015060
B015060
C015060
D015060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7358233904.607105%
B7358316212.202954%
C7358313221.796611%
D7358321262.889254%

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 101705 73537 0 0 0.00% 0.00%
B 101705 73578 0 0 0.00% 0.00%
C 101705 73542 0 0 0.00% 0.00%
D 101705 73464 0 0 0.00% 0.00%

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 0 29 3167 8.59 1034 968 256.1
A 7 110 3161 8.56 1034 968 256.1
A 9 19 3158 8.55 1034 968 256.1
B 2 9 3383 12.09 1017 968 199.8
B 3 80 2762 8.98 1017 968 199.8
B 3 17 2749 8.92 1017 968 199.8
C 1 81 3312 8.73 1039 972 268.0
C 3 203 3122 8.02 1039 972 268.0
C 1 80 3103 7.95 1039 972 268.0
D 7 3 2545 6.31 982 895 261.4
D 10 189 2538 6.29 982 895 261.4
D 4 160 2456 5.97 982 895 261.4

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