ASTROSAT CZTI

Data Quality Report

Orbit 20218

Creation date: 2024-06-27T18:12:34.278619
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/AS1A05_117T01_9000002998_20218cztM0_level2.evt modeM0/AS1A05_117T01_9000002998_20218cztM0_level2_quad_clean.evt
Size (bytes)516,677,76095,636,160
Size492.7 MB 91.2 MB
Events in quadrant A3,299,094621,821
Events in quadrant B3,900,774625,876
Events in quadrant C3,437,358605,422
Events in quadrant D4,571,544591,847

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137821
B0155451
C0140991
D0177941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6474590.911338%
B64741842.842138%
C6474811.251158%
D64742924.510349%

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 7604 6475 19 19 0.25% 0.29%
B 7604 6475 64 64 0.84% 0.99%
C 7604 6475 0 0 0.00% 0.00%
D 7604 6475 191 191 2.51% 2.95%

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 2 99801 602.62 825 809 164.3
A 14 238 22333 131.03 825 809 164.3
A 0 226 7111 38.36 825 809 164.3
B 10 245 390486 2479.55 817 795 157.2
B 15 32 134405 850.14 817 795 157.2
B 7 220 88454 557.76 817 795 157.2
C 3 233 151990 807.15 801 810 187.3
C 14 238 125309 664.7 801 810 187.3
C 3 9 17010 86.49 801 810 187.3
D 1 52 1330783 6984.4 795 774 190.4
D 7 38 139491 728.46 795 774 190.4
D 2 234 30119 154.1 795 774 190.4

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