ASTROSAT CZTI

Data Quality Report

Orbit 23143

Creation date: 2024-06-27T18:50:25.431616
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_173T01_9000003416_23143cztM0_level2.evt modeM0/AS1T03_173T01_9000003416_23143cztM0_level2_quad_clean.evt
Size (bytes)474,678,720108,671,040
Size452.7 MB 103.6 MB
Events in quadrant A3,150,491721,317
Events in quadrant B3,241,793739,598
Events in quadrant C3,814,089707,237
Events in quadrant D3,749,755691,763

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136873
B0138502
C0156552
D0155672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6186691.115422%
B6186841.357905%
C61862624.235370%
D61861672.699644%

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 7436 6186 0 0 0.00% 0.00%
B 7436 6186 0 0 0.00% 0.00%
C 7436 6186 90 90 1.21% 1.45%
D 7436 6186 82 82 1.10% 1.33%

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 9617 54.5 815 799 161.8
A 6 16 8007 44.55 815 799 161.8
A 0 226 7049 38.63 815 799 161.8
B 0 190 46425 304.02 815 797 150.1
B 12 111 16833 106.85 815 797 150.1
B 11 111 14964 94.39 815 797 150.1
C 0 10 384124 2140.59 782 788 179.1
C 8 208 152283 845.96 782 788 179.1
C 14 238 123814 686.99 782 788 179.1
D 12 233 207739 1074.99 801 780 192.5
D 1 52 129348 667.81 801 780 192.5
D 10 230 101546 523.4 801 780 192.5

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