ASTROSAT CZTI

Data Quality Report

Orbit 44170

Creation date: 2024-06-27T23:00:02.739561
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/AS1A13_079T01_9000005956_44170cztM0_level2.fits modeM0/AS1A13_079T01_9000005956_44170cztM0_level2_quad_clean.evt
Size (bytes)459,599,040111,957,120
Size438.3 MB 106.8 MB
Events in quadrant A4,316,761770,531
Events in quadrant B4,012,436777,552
Events in quadrant C3,000,830753,296
Events in quadrant D5,182,759639,977

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173651
B0162161
C0135921
D0199502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64351372.128982%
B64353615.609946%
C6436350.543816%
D64354677.257187%

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 7645 6436 14 14 0.18% 0.22%
B 7645 6436 185 185 2.42% 2.87%
C 7646 6437 13 13 0.17% 0.20%
D 7645 6436 366 366 4.79% 5.69%

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 10 83 1307542 8442.09 750 737 154.8
A 15 223 78785 504.2 750 737 154.8
A 13 6 10439 62.68 750 737 154.8
B 5 172 745814 5170.85 740 719 144.1
B 0 189 122975 848.44 740 719 144.1
B 0 219 81238 558.79 740 719 144.1
C 14 254 157699 911.5 726 730 172.2
C 8 13 4916 24.31 726 730 172.2
C 13 61 4873 24.06 726 730 172.2
D 13 249 947951 5450.38 693 672 173.8
D 13 187 662866 3810.08 693 672 173.8
D 5 235 312137 1792.08 693 672 173.8

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