ASTROSAT CZTI

Data Quality Report

Orbit 02469

Creation date: 2024-06-27T14:18:13.647848
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/AS1G02_018T06_9000000370_02469cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02469cztM0_level2_quad_clean.evt
Size (bytes)447,736,32087,958,080
Size427.0 MB 83.9 MB
Events in quadrant A3,291,922542,383
Events in quadrant B3,186,682558,794
Events in quadrant C3,622,770545,378
Events in quadrant D2,986,358533,422

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146533
B0142372
C0156222
D0142342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6938310.446815%
B6938290.417988%
C6938891.282790%
D6938180.259441%

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 7728 6939 0 0 0.00% 0.00%
B 7728 6939 4 4 0.05% 0.06%
C 7728 6939 45 45 0.58% 0.65%
D 7728 6939 14 14 0.18% 0.20%

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 8 15 291832 1828.21 778 760 159.2
A 12 194 8508 48.66 778 760 159.2
A 0 226 8220 46.86 778 760 159.2
B 4 48 60041 384.89 796 778 154.0
B 4 200 16638 103.01 796 778 154.0
B 5 6 14614 89.86 796 778 154.0
C 14 223 576511 3225.03 757 761 178.5
C 8 112 30153 164.64 757 761 178.5
C 10 65 28346 154.52 757 761 178.5
D 6 112 33072 180.51 749 730 179.2
D 13 53 25519 138.35 749 730 179.2
D 2 14 23819 128.87 749 730 179.2

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