ASTROSAT CZTI

Data Quality Report

Orbit 18759

Creation date: 2024-06-27T17:54:28.644883
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_156T01_9000002804_18759cztM0_level2.evt modeM0/AS1A05_156T01_9000002804_18759cztM0_level2_quad_clean.evt
Size (bytes)313,652,16042,128,640
Size299.1 MB 40.2 MB
Events in quadrant A2,012,367258,846
Events in quadrant B2,549,918254,003
Events in quadrant C2,257,360246,424
Events in quadrant D2,418,545245,608

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083251
B0100571
C090761
D096751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3821140.366396%
B3821982.564774%
C3821461.203873%
D3821340.889819%

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 3821 3821 0 0 0.00% 0.00%
B 3821 3821 60 60 1.57% 1.57%
C 3821 3821 0 0 0.00% 0.00%
D 3821 3821 29 29 0.76% 0.76%

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 13 254 5682 49.96 521 513 103.5
A 0 226 4655 40.03 521 513 103.5
A 12 194 3769 31.47 521 513 103.5
B 10 245 467068 4853.72 513 503 96.1
B 0 197 48930 503.79 513 503 96.1
B 12 111 10591 104.95 513 503 96.1
C 9 54 242920 2120.14 495 500 114.3
C 14 238 80705 701.45 495 500 114.3
C 13 61 3580 26.94 495 500 114.3
D 1 52 249448 2030.17 506 492 122.6
D 13 168 122264 993.02 506 492 122.6
D 7 38 80879 655.54 506 492 122.6

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