ASTROSAT CZTI

Data Quality Report

Orbit 11136

Creation date: 2024-06-27T16:08:46.809337
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/AS1G08_071T02_9000001620_11136cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11136cztM0_level2_quad_clean.evt
Size (bytes)719,559,36087,099,840
Size686.2 MB 83.1 MB
Events in quadrant A6,405,738512,608
Events in quadrant B5,158,871522,675
Events in quadrant C4,265,611530,363
Events in quadrant D5,399,582494,846

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246892
B0205441
C0183351
D0215551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83025726.889906%
B83026297.576488%
C83023654.396531%
D83026507.829439%

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 8602 8305 155 155 1.80% 1.87%
B 8602 8305 150 150 1.74% 1.81%
C 8602 8305 107 107 1.24% 1.29%
D 8602 8305 269 269 3.13% 3.24%

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 8 5 1449564 7075.0 1000 975 204.7
A 8 15 802431 3914.36 1000 975 204.7
A 14 238 292295 1422.83 1000 975 204.7
B 4 239 883809 4489.1 1019 990 196.7
B 15 204 107171 539.93 1019 990 196.7
B 10 16 78244 392.83 1019 990 196.7
C 9 54 350657 1511.88 989 993 231.3
C 5 128 26315 109.49 989 993 231.3
C 14 234 12689 50.57 989 993 231.3
D 1 52 697096 2964.59 973 942 234.8
D 10 253 519082 2206.51 973 942 234.8
D 2 14 197596 837.46 973 942 234.8

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