ASTROSAT CZTI

Data Quality Report

Orbit 32838

Creation date: 2024-06-27T20:42:33.606268
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/AS1C06_002T09_9000004734_32838cztM0_level2.evt modeM0/AS1C06_002T09_9000004734_32838cztM0_level2_quad_clean.evt
Size (bytes)1,456,289,280254,237,760
Size1.4 GB 242.5 MB
Events in quadrant A7,229,8241,736,108
Events in quadrant B9,609,5161,686,459
Events in quadrant C8,084,5551,681,695
Events in quadrant D18,134,0211,523,680

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319004
B0386683
C0344813
D0649573

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15544340.218734%
B155445273.390376%
C15544900.579002%
D1554414929.598559%

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 19781 15547 15 15 0.08% 0.10%
B 19781 15547 348 348 1.76% 2.24%
C 19781 15547 66 66 0.33% 0.42%
D 19781 15547 1241 1241 6.27% 7.98%

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 16 74888 204.6 1791 1755 357.4
A 7 16 64068 174.33 1791 1755 357.4
A 14 207 61888 168.23 1791 1755 357.4
B 5 172 1460788 4337.13 1768 1722 336.4
B 0 219 367618 1087.64 1768 1722 336.4
B 0 190 249277 735.87 1768 1722 336.4
C 3 233 446382 1118.64 1737 1752 397.5
C 9 160 290863 727.37 1737 1752 397.5
C 0 10 214419 535.05 1737 1752 397.5
D 8 195 5541964 13545.87 1664 1625 409.0
D 10 203 1582393 3864.9 1664 1625 409.0
D 2 250 1068705 2608.96 1664 1625 409.0

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