ASTROSAT CZTI

Data Quality Report

Orbit 01167

Creation date: 2024-06-27T14:08:32.771051
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/AS1P01_997T03_9000000216_01167cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01167cztM0_level2_quad_clean.evt
Size (bytes)1,445,129,28079,012,800
Size1.3 GB 75.4 MB
Events in quadrant A7,436,912642,125
Events in quadrant B8,575,893621,014
Events in quadrant C7,632,337623,791
Events in quadrant D19,693,21651,492

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027697952
B0314521369
C0282891004
D0666072499

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01366
B01366
C01366
D01366

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A648260.092564%
B64732253.475977%
C647670.108091%
D6453628697.412056%

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 7692 6493 133 133 1.73% 2.05%
B 7691 6483 533 533 6.93% 8.22%
C 7692 6494 132 132 1.72% 2.03%
D 7692 6453 6409 6409 83.32% 99.32%

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 12 243 16897 32.26 1933 1944 463.5
A 11 79 8497 14.14 1933 1944 463.5
A 3 111 6402 9.62 1933 1944 463.5
B 2 32 839304 1788.84 1992 2006 468.1
B 6 53 64851 134.26 1992 2006 468.1
B 15 22 29237 58.18 1992 2006 468.1
C 15 241 317550 617.27 1839 1901 511.4
C 9 68 38995 72.54 1839 1901 511.4
C 9 83 28010 51.06 1839 1901 511.4
D 1 239 18583480 203986.24 293 302 91.1
D 10 125 8259 87.34 293 302 91.1
D 2 54 2327 22.23 293 302 91.1

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