ASTROSAT CZTI

Data Quality Report

Orbit 44275

Creation date: 2024-06-27T23:01:15.565004
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/AS1A13_077T01_9000005984_44275cztM0_level2.fits modeM0/AS1A13_077T01_9000005984_44275cztM0_level2_quad_clean.evt
Size (bytes)570,657,600128,200,320
Size544.2 MB 122.3 MB
Events in quadrant A6,176,496845,748
Events in quadrant B4,178,872887,793
Events in quadrant C4,214,932847,440
Events in quadrant D5,944,936754,717

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240962
B0178382
C0181002
D0231272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78503664.662420%
B78491722.191362%
C78491101.401452%
D78494335.516626%

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 7865 7851 43 43 0.55% 0.55%
B 7864 7850 17 17 0.22% 0.22%
C 7864 7850 36 36 0.46% 0.46%
D 7864 7850 294 294 3.74% 3.75%

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 1736632 9043.21 918 899 191.9
A 15 223 485241 2523.43 918 899 191.9
A 7 3 283330 1471.47 918 899 191.9
B 0 219 135083 727.91 924 893 184.3
B 0 190 122900 661.82 924 893 184.3
B 0 200 71264 381.73 924 893 184.3
C 3 233 384850 1773.07 904 906 216.5
C 14 254 191240 878.97 904 906 216.5
C 4 254 102916 471.09 904 906 216.5
D 1 52 607224 2677.91 884 855 226.4
D 13 249 468626 2065.82 884 855 226.4
D 2 249 403158 1776.69 884 855 226.4

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