ASTROSAT CZTI

Data Quality Report

Orbit 50643

Creation date: 2025-02-07T12:56:13.810525
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/AS1T05_241T01_9000006446_50643cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50643cztM0_level2_quad_clean.evt
Size (bytes)874,474,56096,203,520
Size834.0 MB 91.7 MB
Events in quadrant A5,092,562679,934
Events in quadrant B11,571,083528,959
Events in quadrant C8,724,283603,795
Events in quadrant D6,402,432577,090

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201740
B0396100
C0312240
D0244240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75101371.824234%
B7511275436.666223%
C7511111214.804953%
D75117119.466116%

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 7510 7510 91 91 1.21% 1.21%
B 7511 7511 2098 2098 27.93% 27.93%
C 7511 7511 951 951 12.66% 12.66%
D 7511 7510 626 626 8.33% 8.34%

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 4 4 632387 3296.09 775 755 191.6
A 4 3 241942 1258.6 775 755 191.6
A 12 250 232729 1210.52 775 755 191.6
B 4 170 7627799 49463.62 710 684 154.2
B 5 185 255610 1653.25 710 684 154.2
B 3 249 186078 1202.32 710 684 154.2
C 15 174 3663141 18371.2 720 714 199.4
C 13 3 510643 2557.87 720 714 199.4
C 15 1 402456 2015.19 720 714 199.4
D 7 110 1308931 6537.52 720 695 200.1
D 11 245 338941 1690.28 720 695 200.1
D 15 185 324523 1618.23 720 695 200.1

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