ASTROSAT CZTI

Data Quality Report

Orbit 04071

Creation date: 2024-06-27T14:37:03.006679
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_222T01_9000000520_04071cztM0_level2.evt modeM0/AS1G05_222T01_9000000520_04071cztM0_level2_quad_clean.evt
Size (bytes)576,446,40082,229,760
Size549.7 MB 78.4 MB
Events in quadrant A4,208,293499,964
Events in quadrant B4,389,305490,379
Events in quadrant C3,892,943495,549
Events in quadrant D4,446,924471,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071
B072
C071
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017824
B017822
C017812
D017611

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204862906
B0214643268
C0191992226
D0218533135

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76243694.839979%
B75684896.461416%
C77032042.648319%
D75773664.830408%

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 9389 8437 67 67 0.71% 0.79%
B 9389 8386 157 157 1.67% 1.87%
C 9389 8517 9 9 0.10% 0.11%
D 9389 8445 83 83 0.88% 0.98%

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 0 50 469697 2456.06 918 896 190.9
A 13 251 93873 487.11 918 896 190.9
A 8 15 74111 383.58 918 896 190.9
B 14 167 508508 2814.55 917 892 180.4
B 10 16 134264 739.5 917 892 180.4
B 4 81 84687 464.61 917 892 180.4
C 9 144 314428 1435.08 915 918 218.5
C 13 61 7650 30.82 915 918 218.5
C 12 4 2919 9.16 915 918 218.5
D 10 172 708500 3206.43 891 864 220.7
D 2 232 202413 913.26 891 864 220.7
D 12 233 58493 261.13 891 864 220.7

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