ASTROSAT CZTI

Data Quality Report

Orbit 30421

Creation date: 2024-06-27T20:15:01.332261
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/AS1C05_019T04_9000004376_30421cztM0_level2.evt modeM0/AS1C05_019T04_9000004376_30421cztM0_level2_quad_clean.evt
Size (bytes)518,112,00082,442,880
Size494.1 MB 78.6 MB
Events in quadrant A3,190,998518,761
Events in quadrant B5,423,448515,457
Events in quadrant C3,222,468501,940
Events in quadrant D3,402,538495,953

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137550
B0209690
C0136470
D0142300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6665741.110278%
B66651542.310578%
C6665991.485371%
D6665671.005251%

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 7525 6665 1 1 0.01% 0.02%
B 7525 6665 16 16 0.21% 0.24%
C 7525 6665 2 2 0.03% 0.03%
D 7525 6665 28 28 0.37% 0.42%

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 14 239 41121 247.43 807 790 163.0
A 0 13 21430 126.62 807 790 163.0
A 13 254 12850 73.99 807 790 163.0
B 6 159 1839229 12070.23 794 773 152.3
B 0 229 407921 2673.1 794 773 152.3
B 4 80 25976 165.47 794 773 152.3
C 14 238 124387 692.04 767 768 178.6
C 3 233 76396 423.38 767 768 178.6
C 10 22 18772 100.79 767 768 178.6
D 8 195 152290 758.12 769 753 199.9
D 13 249 130114 647.18 769 753 199.9
D 2 250 62464 308.73 769 753 199.9

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