ASTROSAT CZTI

Data Quality Report

Orbit 23652

Creation date: 2024-06-27T18:57:13.571202
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/AS1A07_091T04_9000003492_23652cztM0_level2.evt modeM0/AS1A07_091T04_9000003492_23652cztM0_level2_quad_clean.evt
Size (bytes)331,128,00062,683,200
Size315.8 MB 59.8 MB
Events in quadrant A2,302,235393,751
Events in quadrant B2,613,963416,227
Events in quadrant C2,350,004394,945
Events in quadrant D2,448,696369,914

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112301620
B0122391596
C0113181524
D0123602076

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010715
B010917
C010715
D010812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4572140.306212%
B4613511.105571%
C4615501.083424%
D4556380.834065%

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 7514 4757 1 1 0.01% 0.02%
B 7522 4794 11 11 0.15% 0.23%
C 7498 4801 0 0 0.00% 0.00%
D 7506 4734 26 26 0.35% 0.55%

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 15 223 11739 93.85 594 583 118.9
A 13 254 7082 54.67 594 583 118.9
A 0 226 5041 37.5 594 583 118.9
B 3 64 84050 738.35 601 587 113.0
B 0 189 66506 583.15 601 587 113.0
B 0 229 45167 394.37 601 587 113.0
C 14 238 93707 698.42 576 581 133.3
C 7 247 5539 37.18 576 581 133.3
C 13 61 4041 25.95 576 581 133.3
D 1 52 124803 892.82 572 556 139.2
D 13 189 105471 753.91 572 556 139.2
D 9 85 19838 138.56 572 556 139.2

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