ASTROSAT CZTI

Data Quality Report

Orbit 34246

Creation date: 2022-07-18T14:14:26.812546
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/AS1A11_059T09_9000004888_34246cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34246cztM0_level2_quad_clean.evt
Size (bytes)467,513,28060,670,080
Size445.9 MB 57.9 MB
Events in quadrant A2,596,471373,569
Events in quadrant B3,768,130366,753
Events in quadrant C3,299,851371,276
Events in quadrant D4,136,770356,069

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111010
B0146710
C0130850
D0158860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5274100.189609%
B52742614.948805%
C52741442.730375%
D52751362.578199%

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 7127 5275 1 1 0.01% 0.02%
B 7127 5275 175 175 2.46% 3.32%
C 7127 5275 99 99 1.39% 1.88%
D 7128 5276 98 98 1.37% 1.86%

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 10 83 25531 189.81 655 644 131.1
A 13 6 17580 129.17 655 644 131.1
A 9 143 16050 117.5 655 644 131.1
B 5 172 842571 6963.75 645 630 120.9
B 4 171 163470 1346.86 645 630 120.9
B 0 189 99455 817.39 645 630 120.9
C 0 10 301895 2073.42 635 641 145.3
C 15 214 228653 1569.32 635 641 145.3
C 14 254 212191 1456.02 635 641 145.3
D 8 195 1185191 7632.42 635 619 155.2
D 7 38 147536 946.61 635 619 155.2
D 13 249 124049 795.28 635 619 155.2

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