ASTROSAT CZTI

Data Quality Report

Orbit 00164

Creation date: 2024-06-27T13:57:16.275920
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/AS1P01_120T01_9000000006_00164cztM0_level2.evt modeM0/AS1P01_120T01_9000000006_00164cztM0_level2_quad_clean.evt
Size (bytes)530,712,0008,634,240
Size506.1 MB 8.2 MB
Events in quadrant A3,928,8117,592
Events in quadrant B4,421,0617,817
Events in quadrant C3,680,3997,792
Events in quadrant D3,825,8577,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09220
B09222
C09222
D09222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196915794
B0208625427
C0179764696
D0190705441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3182100.314268%
B32151655.132193%
C328020.060976%
D3200120.375000%

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 5956 3445 91 91 1.53% 2.64%
B 5969 3482 334 334 5.60% 9.59%
C 5968 3566 46 46 0.77% 1.29%
D 5970 3474 88 88 1.47% 2.53%

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 10 82888 375.24 979 972 218.3
A 0 86 21728 95.08 979 972 218.3
A 12 244 12402 52.36 979 972 218.3
B 5 85 285081 1263.72 956 961 224.8
B 5 216 218654 968.27 956 961 224.8
B 10 199 200508 887.56 956 961 224.8
C 0 188 17585 63.94 920 953 260.1
C 0 202 11212 39.44 920 953 260.1
C 8 31 9045 31.11 920 953 260.1
D 7 68 152736 557.23 892 925 272.4
D 14 53 48736 175.49 892 925 272.4
D 13 28 30714 109.34 892 925 272.4

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