ASTROSAT CZTI

Data Quality Report

Orbit 33972

Creation date: 2024-06-27T20:54:48.181996
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/AS1A11_037T01_9000004858_33972cztM0_level2.evt modeM0/AS1A11_037T01_9000004858_33972cztM0_level2_quad_clean.evt
Size (bytes)696,294,72070,459,200
Size664.0 MB 67.2 MB
Events in quadrant A8,176,950189,755
Events in quadrant B3,320,898555,840
Events in quadrant C3,238,706543,844
Events in quadrant D6,005,234485,124

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279023
B0130442
C0129042
D0214602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5097441086.521483%
B50971062.079655%
C5097801.569551%
D509865612.867791%

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 7099 5096 1231 1231 17.34% 24.16%
B 7100 5098 80 80 1.13% 1.57%
C 7100 5098 56 56 0.79% 1.10%
D 7101 5099 619 619 8.72% 12.14%

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 15 169 7003222 117425.68 297 293 59.6
A 10 83 8363 135.32 297 293 59.6
A 7 16 7436 119.77 297 293 59.6
B 5 172 495678 4056.94 656 640 122.0
B 0 190 136622 1114.4 656 640 122.0
B 0 229 24866 198.54 656 640 122.0
C 0 10 280078 1887.2 652 659 148.1
C 15 214 222579 1498.85 652 659 148.1
C 3 233 166992 1123.42 652 659 148.1
D 12 33 1741345 11386.75 628 610 152.9
D 8 195 855376 5591.32 628 610 152.9
D 2 250 427398 2791.77 628 610 152.9

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