ASTROSAT CZTI

Data Quality Report

Orbit 13701

Creation date: 2024-06-27T16:44:50.168171
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/AS1T02_040T01_9000002030_13701cztM0_level2.evt modeM0/AS1T02_040T01_9000002030_13701cztM0_level2_quad_clean.evt
Size (bytes)541,549,44096,557,760
Size516.5 MB 92.1 MB
Events in quadrant A3,704,755610,933
Events in quadrant B4,213,250651,715
Events in quadrant C3,620,307587,842
Events in quadrant D4,355,373553,451

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156973
B0170662
C0153132
D0178932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7474841.123896%
B74741722.301311%
C7474580.776024%
D74741321.766123%

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 8935 7477 4 4 0.04% 0.05%
B 8935 7477 38 38 0.43% 0.51%
C 8935 7477 0 0 0.00% 0.00%
D 8935 7477 53 53 0.59% 0.71%

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 11 29 97334 507.07 927 906 190.2
A 15 69 18376 91.87 927 906 190.2
A 1 162 15864 78.66 927 906 190.2
B 0 219 344822 1927.93 936 919 178.4
B 4 48 175404 978.17 936 919 178.4
B 12 111 20481 109.67 936 919 178.4
C 3 233 129593 618.67 893 900 208.0
C 14 234 7389 31.19 893 900 208.0
C 13 61 6376 26.33 893 900 208.0
D 1 52 397915 1855.84 883 859 213.9
D 5 222 273010 1272.04 883 859 213.9
D 8 195 117217 543.86 883 859 213.9

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