ASTROSAT CZTI

Data Quality Report

Orbit 04496

Creation date: 2024-06-27T14:42:51.746119
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/AS1G05_253T03_9000000562_04496cztM0_level2.evt modeM0/AS1G05_253T03_9000000562_04496cztM0_level2_quad_clean.evt
Size (bytes)1,152,869,760171,613,440
Size1.1 GB 163.7 MB
Events in quadrant A8,551,1381,016,390
Events in quadrant B8,071,4821,025,790
Events in quadrant C7,673,7801,028,045
Events in quadrant D9,495,864982,482

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03426
B03420
C03424
D03420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0181
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037125267
B035206262
C035017309
D040472301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A165933121.880311%
B165871390.838006%
C165841280.771828%
D165813972.394307%

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 18576 16706 153 153 0.82% 0.92%
B 18576 16701 13 13 0.07% 0.08%
C 18576 16702 52 52 0.28% 0.31%
D 18576 16706 264 264 1.42% 1.58%

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 13 409035 1042.05 1890 1845 390.8
A 0 50 383366 976.36 1890 1845 390.8
A 0 118 238845 606.51 1890 1845 390.8
B 15 204 326424 876.79 1922 1871 370.2
B 8 3 158881 424.17 1922 1871 370.2
B 4 80 68398 179.73 1922 1871 370.2
C 9 247 223368 514.83 1842 1852 430.3
C 9 54 124475 284.99 1842 1852 430.3
C 9 16 67703 153.04 1842 1852 430.3
D 14 34 1667542 3792.91 1817 1759 439.2
D 13 235 450781 1022.4 1817 1759 439.2
D 12 36 151812 341.66 1817 1759 439.2

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