ASTROSAT CZTI

Data Quality Report

Orbit 18091

Creation date: 2024-06-27T17:45:18.778455
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_080T01_9000002686_18091cztM0_level2.evt modeM0/AS1T03_080T01_9000002686_18091cztM0_level2_quad_clean.evt
Size (bytes)406,008,000119,419,200
Size387.2 MB 113.9 MB
Events in quadrant A3,030,477815,948
Events in quadrant B2,824,506828,151
Events in quadrant C2,789,293790,673
Events in quadrant D3,257,789777,463

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126311
B0119801
C0119091
D0133991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57941532.640663%
B5795370.638481%
C5795470.811044%
D57951462.519413%

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 7029 5795 79 79 1.12% 1.36%
B 7030 5796 2 2 0.03% 0.03%
C 7030 5796 0 0 0.00% 0.00%
D 7030 5796 122 122 1.74% 2.10%

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 4 231187 1611.38 716 703 143.0
A 4 2 21564 145.85 716 703 143.0
A 15 174 16794 112.5 716 703 143.0
B 12 111 15108 108.92 712 696 132.3
B 0 189 14147 101.65 712 696 132.3
B 11 111 13382 95.87 712 696 132.3
C 14 238 109261 692.55 682 687 156.8
C 3 233 13512 81.81 682 687 156.8
C 13 61 4916 26.98 682 687 156.8
D 11 176 599806 3596.82 692 673 166.6
D 2 234 22741 132.48 692 673 166.6
D 2 152 10511 59.06 692 673 166.6

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