ASTROSAT CZTI

Data Quality Report

Orbit 01300

Creation date: 2024-06-27T14:10:37.247544
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/AS1G04_002T02_9000000230_01300cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01300cztM0_level2_quad_clean.evt
Size (bytes)1,229,679,36089,104,320
Size1.1 GB 85.0 MB
Events in quadrant A7,443,936587,577
Events in quadrant B7,668,895608,073
Events in quadrant C6,971,799600,641
Events in quadrant D14,760,774482,059

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264272
B0270511
C0249741
D0483981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59962193.652435%
B5996190.316878%
C599650.083389%
D5996244140.710474%

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 7165 5996 395 395 5.51% 6.59%
B 7166 5997 343 343 4.79% 5.72%
C 7166 5997 107 107 1.49% 1.78%
D 7166 5996 4231 4231 59.04% 70.56%

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 32 759761 1848.85 1714 1725 410.0
A 15 127 69325 164.88 1714 1725 410.0
A 0 5 13525 28.78 1714 1725 410.0
B 8 4 203187 466.38 1853 1865 431.7
B 12 52 164870 377.62 1853 1865 431.7
B 6 53 141287 322.98 1853 1865 431.7
C 15 241 299474 637.62 1695 1756 466.9
C 3 111 18913 36.75 1695 1756 466.9
C 3 79 11284 20.41 1695 1756 466.9
D 13 169 9326736 21257.55 1420 1470 438.7
D 2 88 58094 129.08 1420 1470 438.7
D 10 84 40298 88.51 1420 1470 438.7

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