ASTROSAT CZTI

Data Quality Report

Orbit 44426

Creation date: 2024-06-27T23:03:28.404149
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/AS1A13_072T03_9000006000_44426cztM0_level2.fits modeM0/AS1A13_072T03_9000006000_44426cztM0_level2_quad_clean.evt
Size (bytes)421,908,480108,380,160
Size402.4 MB 103.4 MB
Events in quadrant A4,641,007724,429
Events in quadrant B3,413,174742,580
Events in quadrant C3,575,616699,025
Events in quadrant D3,462,717645,049

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190351
B0149041
C0155721
D0154151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6754570.843944%
B67541251.850755%
C67542103.109269%
D6754891.317738%

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 7734 6755 3 3 0.04% 0.04%
B 7734 6755 74 74 0.96% 1.10%
C 7734 6755 39 39 0.50% 0.58%
D 7734 6755 70 70 0.91% 1.04%

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 1727633 11206.1 737 722 154.1
A 8 4 24482 154.18 737 722 154.1
A 15 235 18231 113.61 737 722 154.1
B 5 172 265371 1823.53 734 711 145.1
B 4 170 84645 578.31 734 711 145.1
B 0 229 72845 497.01 734 711 145.1
C 12 16 562993 3356.67 710 714 167.5
C 14 254 113976 676.15 710 714 167.5
C 3 233 65203 384.98 710 714 167.5
D 1 52 195828 1094.19 710 689 178.3
D 13 249 170629 952.89 710 689 178.3
D 4 221 78018 433.6 710 689 178.3

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