ASTROSAT CZTI

Data Quality Report

Orbit 25839

Creation date: 2024-06-27T19:21:58.039296
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_068T01_9000003756_25839cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25839cztM0_level2_quad_clean.evt
Size (bytes)1,226,361,600202,515,840
Size1.1 GB 193.1 MB
Events in quadrant A8,230,6661,317,411
Events in quadrant B7,730,3921,338,058
Events in quadrant C7,593,3341,242,832
Events in quadrant D12,573,5311,199,390

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338150
B0322570
C0320250
D0477820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A150053182.119294%
B150071731.152795%
C150062601.732640%
D150059316.204598%

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 18976 15010 120 120 0.63% 0.80%
B 18977 15011 5 5 0.03% 0.03%
C 18977 15010 13 13 0.07% 0.09%
D 18977 15010 869 869 4.58% 5.79%

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 0 13 685825 1767.54 1950 1918 386.9
A 6 16 29440 71.13 1950 1918 386.9
A 13 254 21368 50.27 1950 1918 386.9
B 0 219 48569 128.91 1934 1894 362.1
B 6 36 45067 119.24 1934 1894 362.1
B 12 111 44035 116.39 1934 1894 362.1
C 14 238 298483 702.1 1831 1847 422.5
C 3 233 121811 283.94 1831 1847 422.5
C 14 225 37028 83.27 1831 1847 422.5
D 7 80 2275665 5271.31 1818 1774 431.4
D 1 3 2256813 5227.61 1818 1774 431.4
D 1 52 821067 1899.28 1818 1774 431.4

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