ASTROSAT CZTI

Data Quality Report

Orbit 10178

Creation date: 2024-06-27T15:56:00.848209
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/AS1A03_133T01_9000001464_10178cztM0_level2.evt modeM0/AS1A03_133T01_9000001464_10178cztM0_level2_quad_clean.evt
Size (bytes)473,771,52091,609,920
Size451.8 MB 87.4 MB
Events in quadrant A3,054,670592,291
Events in quadrant B3,484,902586,506
Events in quadrant C2,924,333585,695
Events in quadrant D4,436,966550,718

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01368
C01362
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013839229
B015003314
C013706234
D018123438

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6599320.484922%
B6568861.309379%
C6593210.318520%
D65641281.950030%

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 7400 6708 5 5 0.07% 0.07%
B 7400 6708 31 31 0.42% 0.46%
C 7400 6710 5 5 0.07% 0.07%
D 7400 6699 86 86 1.16% 1.28%

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 15 174 34396 211.67 772 755 158.9
A 8 15 26757 163.61 772 755 158.9
A 3 1 15837 94.9 772 755 158.9
B 4 239 201778 1369.14 768 751 146.8
B 0 219 82592 557.4 768 751 146.8
B 0 189 46165 309.3 768 751 146.8
C 14 234 31329 178.52 738 742 171.3
C 14 67 13946 77.07 738 742 171.3
C 13 61 5597 28.34 738 742 171.3
D 8 195 651929 3724.16 727 706 174.9
D 1 52 451619 2578.65 727 706 174.9
D 2 16 152694 869.18 727 706 174.9

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