ASTROSAT CZTI

Data Quality Report

Orbit 25818

Creation date: 2024-06-27T19:21:46.354956
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_25818cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25818cztM0_level2_quad_clean.evt
Size (bytes)544,055,040108,555,840
Size518.9 MB 103.5 MB
Events in quadrant A3,767,717719,582
Events in quadrant B3,486,370725,192
Events in quadrant C4,152,750677,256
Events in quadrant D4,598,217680,659

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156480
B0146440
C0167390
D0182850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6966831.191502%
B6966630.904393%
C69661672.397359%
D69661071.536032%

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 7935 6965 4 4 0.05% 0.06%
B 7936 6966 0 0 0.00% 0.00%
C 7936 6966 26 26 0.33% 0.37%
D 7936 6966 44 44 0.55% 0.63%

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 336490 1878.1 890 872 178.7
A 13 254 9697 49.38 890 872 178.7
A 3 137 8272 41.41 890 872 178.7
B 0 219 21776 125.22 873 852 167.1
B 4 171 20814 119.46 873 852 167.1
B 12 111 20685 118.69 873 852 167.1
C 3 233 733730 3727.65 839 846 196.6
C 14 238 134732 680.98 839 846 196.6
C 0 207 10935 51.32 839 846 196.6
D 7 80 674689 3331.38 857 837 202.3
D 8 195 478666 2362.29 857 837 202.3
D 1 52 127686 627.11 857 837 202.3

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