ASTROSAT CZTI

Data Quality Report

Orbit 04246

Creation date: 2024-06-27T14:39:18.939411
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/AS1G05_240T01_9000000536_04246cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04246cztM0_level2_quad_clean.evt
Size (bytes)582,281,28078,456,960
Size555.3 MB 74.8 MB
Events in quadrant A4,863,660461,334
Events in quadrant B3,963,495463,596
Events in quadrant C3,607,804452,927
Events in quadrant D4,653,071437,907

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199223
B0172392
C0166292
D0195704

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80592252.791910%
B80591702.109443%
C80591011.253257%
D80582232.767436%

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 8429 8062 4 4 0.05% 0.05%
B 8429 8062 9 9 0.11% 0.11%
C 8429 8062 0 0 0.00% 0.00%
D 8429 8062 91 91 1.08% 1.13%

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 8 15 921368 4738.79 941 916 194.2
A 0 50 95788 488.43 941 916 194.2
A 0 199 87780 447.2 941 916 194.2
B 15 204 55294 291.09 958 932 186.8
B 4 81 46651 244.81 958 932 186.8
B 14 167 43017 225.35 958 932 186.8
C 9 54 12081 51.73 919 923 215.7
C 13 61 7738 31.59 919 923 215.7
C 0 10 3601 12.41 919 923 215.7
D 13 235 302789 1346.85 912 881 224.2
D 11 132 254462 1131.26 912 881 224.2
D 10 172 164561 730.2 912 881 224.2

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