ASTROSAT CZTI

Data Quality Report

Orbit 32394

Creation date: 2024-06-27T20:39:42.147163
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/AS1T04_059T01_9000004704_32394cztM0_level2.evt modeM0/AS1T04_059T01_9000004704_32394cztM0_level2_quad_clean.evt
Size (bytes)782,599,68081,164,160
Size746.3 MB 77.4 MB
Events in quadrant A3,535,130581,532
Events in quadrant B10,253,724427,770
Events in quadrant C5,855,242508,146
Events in quadrant D3,670,340537,917

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141572
B0344341
C0212431
D0145041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57371963.416420%
B5737269346.940910%
C5737119820.881994%
D57371232.143978%

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 7027 5738 142 142 2.02% 2.47%
B 7027 5738 2122 2122 30.20% 36.98%
C 7027 5738 768 768 10.93% 13.38%
D 7027 5738 81 81 1.15% 1.41%

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 6 603933 4047.16 747 734 149.0
A 0 226 42952 283.26 747 734 149.0
A 13 6 11020 69.01 747 734 149.0
B 4 80 5154896 43566.37 626 612 118.3
B 6 159 1406738 11885.22 626 612 118.3
B 5 172 616912 5209.25 626 612 118.3
C 3 233 2733162 18431.52 642 646 148.3
C 0 10 422884 2848.1 642 646 148.3
C 14 238 117762 789.98 642 646 148.3
D 8 195 531277 3135.09 707 688 169.2
D 13 249 197025 1160.1 707 688 169.2
D 1 47 73608 430.86 707 688 169.2

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