ASTROSAT CZTI

Data Quality Report

Orbit 26244

Creation date: 2024-06-27T19:26:32.808333
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/AS1A09_079T03_9000003790_26244cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26244cztM0_level2_quad_clean.evt
Size (bytes)522,910,080101,871,360
Size498.7 MB 97.2 MB
Events in quadrant A3,654,130655,881
Events in quadrant B3,264,896688,071
Events in quadrant C4,294,013650,796
Events in quadrant D4,178,435633,044

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150630
B0137360
C0169300
D0169810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65531311.999084%
B6554160.244126%
C65543315.050351%
D65541842.807446%

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 7883 6554 93 93 1.18% 1.42%
B 7884 6555 0 0 0.00% 0.00%
C 7884 6555 160 160 2.03% 2.44%
D 7884 6555 116 116 1.47% 1.77%

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 508791 3114.93 816 801 163.1
A 13 254 10068 56.82 816 801 163.1
A 0 226 7206 39.27 816 801 163.1
B 12 111 18604 115.21 828 811 154.4
B 0 230 17716 109.46 828 811 154.4
B 11 111 16153 99.34 828 811 154.4
C 3 233 1079806 5962.05 783 790 181.0
C 14 238 126556 694.91 783 790 181.0
C 2 16 37574 203.25 783 790 181.0
D 1 52 1168536 6319.66 781 763 184.8
D 2 234 28371 149.41 781 763 184.8
D 12 233 22073 115.32 781 763 184.8

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