ASTROSAT CZTI

Data Quality Report

Orbit 12669

Creation date: 2024-06-27T16:30:49.656499
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/AS1A04_174T01_9000001876_12669cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12669cztM0_level2_quad_clean.evt
Size (bytes)556,007,04099,486,720
Size530.2 MB 94.9 MB
Events in quadrant A3,506,868649,248
Events in quadrant B5,489,901573,070
Events in quadrant C3,505,303650,938
Events in quadrant D3,829,553619,447

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154363
B0212452
C0154252
D0166032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7468861.151580%
B746890712.145153%
C7468370.495447%
D7468911.218532%

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 8394 7470 0 0 0.00% 0.00%
B 8394 7469 608 608 7.24% 8.14%
C 8394 7470 0 0 0.00% 0.00%
D 8394 7470 61 61 0.73% 0.82%

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 12 189 15273 76.59 906 886 187.8
A 0 226 7878 37.22 906 886 187.8
A 12 194 7013 32.62 906 886 187.8
B 4 239 1903434 11721.21 840 820 162.3
B 3 64 124644 762.82 840 820 162.3
B 3 209 71418 434.92 840 820 162.3
C 15 208 23630 109.75 887 896 207.2
C 8 128 12684 56.9 887 896 207.2
C 8 112 6447 26.8 887 896 207.2
D 1 52 248662 1135.81 871 851 218.2
D 13 104 118252 538.09 871 851 218.2
D 13 249 80021 362.86 871 851 218.2

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