ASTROSAT CZTI

Data Quality Report

Orbit 50989

Creation date: 2025-03-02T20:07:22.071608
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/AS1C07_001T02_9000006452_50989cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50989cztM0_level2_quad_clean.evt
Size (bytes)555,678,720100,860,480
Size529.9 MB 96.2 MB
Events in quadrant A4,837,625653,259
Events in quadrant B4,042,716708,596
Events in quadrant C4,281,420626,566
Events in quadrant D6,857,970571,907

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190952
B0170152
C0178312
D0253512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70863104.374824%
B70863094.360711%
C70863224.544172%
D70865157.267852%

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 7936 7086 153 153 1.93% 2.16%
B 7936 7086 140 140 1.76% 1.98%
C 7936 7086 193 193 2.43% 2.72%
D 7936 7086 452 452 5.70% 6.38%

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 12 3 667709 3626.92 746 728 183.9
A 3 130 189547 1026.76 746 728 183.9
A 4 3 151667 820.78 746 728 183.9
B 12 32 242736 1537.7 741 716 157.4
B 4 81 191632 1213.0 741 716 157.4
B 7 252 114987 726.03 741 716 157.4
C 1 44 840425 4311.11 719 715 194.8
C 13 3 71831 365.11 719 715 194.8
C 15 193 69970 355.56 719 715 194.8
D 8 176 1209087 6137.67 710 685 196.9
D 10 181 800980 4064.83 710 685 196.9
D 7 39 587183 2978.92 710 685 196.9

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