ASTROSAT CZTI

Data Quality Report

Orbit 17284

Creation date: 2024-06-27T17:34:29.867273
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_059T01_9000002554_17284cztM0_level2.evt modeM0/AS1T03_059T01_9000002554_17284cztM0_level2_quad_clean.evt
Size (bytes)637,084,80089,222,400
Size607.6 MB 85.1 MB
Events in quadrant A3,475,521587,849
Events in quadrant B3,140,926601,214
Events in quadrant C3,201,159558,069
Events in quadrant D9,035,364500,319

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146043
B0135613
C0137793
D0313657

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65141001.535155%
B6514480.736874%
C6514560.859687%
D6513211332.442807%

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 7639 6516 67 67 0.88% 1.03%
B 7639 6516 2 2 0.03% 0.03%
C 7639 6516 2 2 0.03% 0.03%
D 7638 6515 1896 1896 24.82% 29.10%

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 14 235 414968 2600.55 791 777 159.3
A 0 23 9588 55.32 791 777 159.3
A 4 2 8347 47.53 791 777 159.3
B 12 111 18368 115.07 798 780 152.8
B 11 111 15633 97.18 798 780 152.8
B 0 230 14536 90.0 798 780 152.8
C 14 238 115651 649.39 754 762 176.9
C 5 112 77313 432.69 754 762 176.9
C 3 233 69027 385.85 754 762 176.9
D 11 176 5877101 35968.5 664 646 163.4
D 13 232 250821 1531.27 664 646 163.4
D 10 70 172684 1053.01 664 646 163.4

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