ASTROSAT CZTI

Data Quality Report

Orbit 27095

Creation date: 2024-06-27T19:36:26.725402
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/AS1T03_231T01_9000003910_27095cztM0_level2.evt modeM0/AS1T03_231T01_9000003910_27095cztM0_level2_quad_clean.evt
Size (bytes)533,378,880100,920,960
Size508.7 MB 96.2 MB
Events in quadrant A3,512,570676,612
Events in quadrant B3,748,698685,393
Events in quadrant C3,335,271641,743
Events in quadrant D5,127,620610,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145630
B0152790
C0138430
D0196170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6339811.277804%
B6339791.246253%
C63391011.593311%
D63393425.395173%

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 7574 6340 9 9 0.12% 0.14%
B 7574 6340 9 9 0.12% 0.14%
C 7574 6340 7 7 0.09% 0.11%
D 7574 6340 182 182 2.40% 2.87%

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 14 235 181455 1073.75 851 837 168.2
A 13 248 27875 160.74 851 837 168.2
A 12 189 19237 109.39 851 837 168.2
B 3 112 138993 876.1 845 826 157.7
B 10 245 124522 784.34 845 826 157.7
B 3 64 59169 369.95 845 826 157.7
C 14 238 133034 704.89 807 812 187.6
C 15 208 27640 143.02 807 812 187.6
C 2 16 9678 47.27 807 812 187.6
D 1 52 1668384 8753.01 803 783 190.5
D 2 250 157082 820.39 803 783 190.5
D 7 38 132408 690.88 803 783 190.5

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