ASTROSAT CZTI

Data Quality Report

Orbit 17118

Creation date: 2024-06-27T17:32:22.431641
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_056T01_9000002540_17118cztM0_level2.evt modeM0/AS1A05_056T01_9000002540_17118cztM0_level2_quad_clean.evt
Size (bytes)559,362,240103,464,000
Size533.4 MB 98.7 MB
Events in quadrant A3,913,788657,571
Events in quadrant B3,868,798670,796
Events in quadrant C4,264,903624,619
Events in quadrant D4,349,531623,699

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168322
B0165602
C0180182
D0181202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8001730.912386%
B8001891.112361%
C80011121.399825%
D80011401.749781%

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 9781 8002 8 8 0.08% 0.10%
B 9781 8002 0 0 0.00% 0.00%
C 9781 8002 4 4 0.04% 0.05%
D 9781 8003 79 79 0.81% 0.99%

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 4 2 136537 681.05 981 960 199.1
A 0 226 8450 37.62 981 960 199.1
A 3 137 7503 32.87 981 960 199.1
B 12 111 23587 119.68 981 953 189.1
B 0 230 22032 111.46 981 953 189.1
B 11 111 19921 100.3 981 953 189.1
C 3 233 464253 2114.86 932 938 219.1
C 14 238 140984 639.26 932 938 219.1
C 5 112 18265 79.09 932 938 219.1
D 5 222 712318 3114.86 940 912 228.4
D 1 52 65627 283.35 940 912 228.4
D 2 234 30884 131.23 940 912 228.4

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