ASTROSAT CZTI

Data Quality Report

Orbit 18905

Creation date: 2024-06-27T17:56:21.773954
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/AS1A05_163T01_9000002820_18905cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18905cztM0_level2_quad_clean.evt
Size (bytes)542,854,08077,077,440
Size517.7 MB 73.5 MB
Events in quadrant A4,462,974475,685
Events in quadrant B4,419,445487,239
Events in quadrant C3,045,575484,599
Events in quadrant D4,112,005473,348

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169211
B0168161
C0124441
D0160591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59104327.309645%
B59114617.799019%
C5911741.251903%
D59111752.960582%

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 7115 5911 235 235 3.30% 3.98%
B 7116 5912 239 239 3.36% 4.04%
C 7116 5912 1 1 0.01% 0.02%
D 7116 5912 108 108 1.52% 1.83%

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 1553915 10306.78 751 737 150.7
A 13 254 9546 58.46 751 737 150.7
A 8 144 8062 48.61 751 737 150.7
B 3 112 1321629 9422.99 737 720 140.2
B 7 220 124544 883.33 737 720 140.2
B 0 189 29306 203.92 737 720 140.2
C 14 238 114492 672.66 728 733 169.1
C 3 233 72667 425.35 728 733 169.1
C 5 112 20186 115.03 728 733 169.1
D 7 238 1050954 5797.13 741 717 181.2
D 12 233 173703 954.85 741 717 181.2
D 1 52 55954 304.9 741 717 181.2

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