ASTROSAT CZTI

Data Quality Report

Orbit 18504

Creation date: 2024-06-27T17:50:41.790379
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/AS1A05_075T08_9000002744_18504cztM0_level2.evt modeM0/AS1A05_075T08_9000002744_18504cztM0_level2_quad_clean.evt
Size (bytes)443,514,24083,672,640
Size423.0 MB 79.8 MB
Events in quadrant A3,223,445515,418
Events in quadrant B3,306,759531,792
Events in quadrant C3,108,961517,134
Events in quadrant D3,339,195504,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139701
B0141031
C0135691
D0146611

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66621291.936355%
B66631592.386312%
C66621261.891324%
D66621692.536776%

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 6952 6662 9 9 0.13% 0.14%
B 6953 6663 33 33 0.47% 0.50%
C 6952 6662 0 0 0.00% 0.00%
D 6952 6662 62 62 0.89% 0.93%

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 13 133729 815.72 793 774 163.0
A 14 111 14165 82.16 793 774 163.0
A 15 192 9807 55.42 793 774 163.0
B 10 245 91215 583.45 791 770 155.0
B 7 220 72357 461.8 791 770 155.0
B 0 230 22876 142.6 791 770 155.0
C 14 238 117431 646.0 762 766 180.6
C 8 128 10568 54.28 762 766 180.6
C 13 61 5374 25.52 762 766 180.6
D 7 38 305205 1618.33 772 748 188.1
D 7 238 54049 283.32 772 748 188.1
D 13 168 33177 172.37 772 748 188.1

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