ASTROSAT CZTI

Data Quality Report

Orbit 40599

Creation date: 2024-06-27T22:18:02.650445
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/AS1A12_054T02_9000005550_40599cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40599cztM0_level2_quad_clean.evt
Size (bytes)1,028,148,480226,618,560
Size980.5 MB 216.1 MB
Events in quadrant A8,074,4131,667,710
Events in quadrant B8,047,1321,690,834
Events in quadrant C8,158,0741,604,442
Events in quadrant D12,564,807822,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338365
B0341414
C0344514
D0484254

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15586430.275889%
B155861070.686514%
C155863101.988964%
D15586777249.865264%

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 19765 15589 15 15 0.08% 0.10%
B 19765 15589 66 66 0.33% 0.42%
C 19765 15589 300 300 1.52% 1.92%
D 19765 15588 550 550 2.78% 3.53%

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 10 83 1296144 3805.31 1670 1638 340.2
A 12 189 143913 418.23 1670 1638 340.2
A 2 79 69739 200.19 1670 1638 340.2
B 0 190 649183 2035.0 1660 1615 318.2
B 3 112 381057 1192.41 1660 1615 318.2
B 5 255 309658 968.03 1660 1615 318.2
C 14 254 991220 2630.77 1622 1630 376.2
C 15 214 662620 1757.21 1622 1630 376.2
C 0 10 109068 285.62 1622 1630 376.2
D 2 153 3235829 10389.4 1251 1217 311.3
D 12 227 1283327 4118.07 1251 1217 311.3
D 12 191 1050031 3368.73 1251 1217 311.3

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