ASTROSAT CZTI

Data Quality Report

Orbit 27097

Creation date: 2024-06-27T19:36:28.114416
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_231T01_9000003910_27097cztM0_level2.evt modeM0/AS1T03_231T01_9000003910_27097cztM0_level2_quad_clean.evt
Size (bytes)606,551,04091,537,920
Size578.5 MB 87.3 MB
Events in quadrant A3,408,014621,148
Events in quadrant B4,064,922633,668
Events in quadrant C3,247,435591,856
Events in quadrant D7,236,385498,946

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138430
B0161320
C0132680
D0257280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6102681.114389%
B6102981.606031%
C6102791.294657%
D6102119419.567355%

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 7437 6103 13 13 0.17% 0.21%
B 7437 6103 20 20 0.27% 0.33%
C 7437 6103 0 0 0.00% 0.00%
D 7437 6103 1134 1134 15.25% 18.58%

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 14 235 134605 829.79 819 807 161.2
A 6 16 61545 376.69 819 807 161.2
A 12 189 27107 163.11 819 807 161.2
B 3 112 498169 3251.36 822 805 153.0
B 10 245 185047 1204.42 822 805 153.0
B 0 189 49768 320.08 822 805 153.0
C 14 238 127652 698.51 782 790 181.6
C 2 16 39578 213.57 782 790 181.6
C 3 233 22518 119.64 782 790 181.6
D 1 52 4059799 23210.66 727 710 174.9
D 2 250 133433 758.94 727 710 174.9
D 12 227 117958 670.45 727 710 174.9

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