ASTROSAT CZTI

Data Quality Report

Orbit 18603

Creation date: 2024-06-27T17:52:12.710985
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/AS1A05_104T03_9000002770_18603cztM0_level2.evt modeM0/AS1A05_104T03_9000002770_18603cztM0_level2_quad_clean.evt
Size (bytes)392,224,32071,222,400
Size374.1 MB 67.9 MB
Events in quadrant A2,682,543439,904
Events in quadrant B2,785,202451,468
Events in quadrant C2,763,543439,974
Events in quadrant D3,260,713428,037

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118001
B0120411
C0119461
D0136201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5678691.215217%
B56781021.796407%
C56781081.902078%
D56781612.835505%

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 6148 5678 0 0 0.00% 0.00%
B 6148 5678 11 11 0.18% 0.19%
C 6148 5679 1 1 0.02% 0.02%
D 6148 5679 69 69 1.12% 1.22%

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 8382 54.39 692 677 141.7
A 15 192 7066 45.1 692 677 141.7
A 0 226 5977 37.41 692 677 141.7
B 0 229 33478 246.85 691 674 132.9
B 4 173 20694 150.65 691 674 132.9
B 12 111 16386 118.24 691 674 132.9
C 14 238 104141 656.59 667 670 157.6
C 3 233 42719 266.83 667 670 157.6
C 9 54 14269 86.29 667 670 157.6
D 1 52 669187 4080.6 670 651 163.8
D 2 234 23133 137.23 670 651 163.8
D 7 238 22923 135.94 670 651 163.8

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