ASTROSAT CZTI

Data Quality Report

Orbit 15194

Creation date: 2024-06-27T17:05:05.932595
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_068T01_9000002238_15194cztM0_level2.evt modeM0/AS1T02_068T01_9000002238_15194cztM0_level2_quad_clean.evt
Size (bytes)261,561,60052,378,560
Size249.4 MB 50.0 MB
Events in quadrant A1,323,436372,256
Events in quadrant B3,661,894297,722
Events in quadrant C1,402,861364,403
Events in quadrant D1,343,972353,976

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058141
B0127521
C059561
D059351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A275440.145243%
B275495434.640523%
C275440.145243%
D2754110.399419%

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 2755 2755 0 0 0.00% 0.00%
B 2755 2755 738 738 26.79% 26.79%
C 2755 2755 0 0 0.00% 0.00%
D 2755 2755 9 9 0.33% 0.33%

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 17447 248.09 338 331 69.0
A 13 248 4256 56.89 338 331 69.0
A 0 226 3008 38.8 338 331 69.0
B 3 112 2494735 45874.12 277 270 54.4
B 4 48 40838 746.06 277 270 54.4
B 0 197 13468 242.72 277 270 54.4
C 3 233 118992 1534.23 328 331 77.3
C 13 61 2267 25.03 328 331 77.3
C 7 247 1762 18.5 328 331 77.3
D 9 68 25147 302.08 332 323 82.2
D 2 120 23350 280.22 332 323 82.2
D 2 234 11468 135.62 332 323 82.2

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