ASTROSAT CZTI

Data Quality Report

Orbit 17627

Creation date: 2024-06-27T17:38:49.498722
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_071T01_9000002610_17627cztM0_level2.evt modeM0/AS1T03_071T01_9000002610_17627cztM0_level2_quad_clean.evt
Size (bytes)444,286,08090,057,600
Size423.7 MB 85.9 MB
Events in quadrant A3,143,688581,989
Events in quadrant B3,120,570591,001
Events in quadrant C3,298,719558,010
Events in quadrant D3,454,350547,021

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135732
B0134232
C0136452
D0147362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6443270.419059%
B6444470.729361%
C6444781.210428%
D64431392.157380%

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 8623 6445 2 2 0.02% 0.03%
B 8624 6446 0 0 0.00% 0.00%
C 8624 6446 0 0 0.00% 0.00%
D 8623 6445 87 87 1.01% 1.35%

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 14 237 116476 732.98 788 771 157.9
A 0 226 7082 39.98 788 771 157.9
A 3 137 5704 31.25 788 771 157.9
B 0 189 21460 136.57 791 773 151.5
B 12 111 17592 111.04 791 773 151.5
B 11 111 15302 95.92 791 773 151.5
C 3 233 231668 1319.8 749 753 175.0
C 14 238 117867 669.37 749 753 175.0
C 0 207 16674 91.0 749 753 175.0
D 1 52 420082 2310.49 751 730 181.5
D 13 189 100562 550.04 751 730 181.5
D 4 239 44823 242.94 751 730 181.5

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