ASTROSAT CZTI

Data Quality Report

Orbit 23450

Creation date: 2024-06-27T18:52:08.707044
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/AS1A08_004T03_9000003438_23450cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23450cztM0_level2_quad_clean.evt
Size (bytes)561,672,00055,990,080
Size535.7 MB 53.4 MB
Events in quadrant A2,950,113363,376
Events in quadrant B3,145,773363,560
Events in quadrant C2,975,704353,533
Events in quadrant D7,554,954218,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0131
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012783809
B013368824
C012956885
D0279781554

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01246
B01246
C01237
D01246

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5668881.552576%
B56521612.848549%
C56671242.188107%
D5608163529.154779%

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 7297 5724 8 8 0.11% 0.14%
B 7297 5722 15 15 0.21% 0.26%
C 7297 5722 0 0 0.00% 0.00%
D 7296 5677 1433 1433 19.64% 25.24%

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 15 174 30334 198.01 757 743 149.4
A 13 254 8554 52.27 757 743 149.4
A 0 226 6735 40.1 757 743 149.4
B 5 172 48970 356.63 736 719 135.3
B 7 202 40841 296.55 736 719 135.3
B 7 187 31360 226.47 736 719 135.3
C 14 238 115800 692.82 725 731 166.1
C 7 247 19978 115.88 725 731 166.1
C 1 16 7898 43.15 725 731 166.1
D 1 52 3989113 26524.23 624 609 150.4
D 7 238 985674 6550.85 624 609 150.4
D 12 233 134445 890.03 624 609 150.4

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