ASTROSAT CZTI

Data Quality Report

Orbit 45735

Creation date: 2024-06-27T23:15:34.014358
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/AS1T05_183T01_9000006124_45735cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45735cztM0_level2_quad_clean.evt
Size (bytes)556,646,400115,318,080
Size530.9 MB 110.0 MB
Events in quadrant A6,245,902775,846
Events in quadrant B4,644,577792,490
Events in quadrant C3,421,930790,469
Events in quadrant D5,793,231683,103

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224692
B0179732
C0142482
D0216544

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64503515.441860%
B64504176.465116%
C64501392.155039%
D64496119.474337%

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 7640 6451 15 15 0.20% 0.23%
B 7640 6451 153 153 2.00% 2.37%
C 7640 6451 34 34 0.45% 0.53%
D 7639 6450 467 467 6.11% 7.24%

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 10 83 2999654 18070.97 806 790 165.9
A 13 248 85341 509.5 806 790 165.9
A 2 79 14452 82.33 806 790 165.9
B 3 112 639980 4160.12 789 766 153.7
B 5 172 296686 1925.9 789 766 153.7
B 5 255 165427 1071.64 789 766 153.7
C 14 254 236751 1260.98 793 800 187.1
C 14 96 37782 197.64 793 800 187.1
C 12 2 20968 107.78 793 800 187.1
D 1 52 1529625 7819.92 779 755 195.5
D 13 249 861910 4404.67 779 755 195.5
D 2 249 118262 601.03 779 755 195.5

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