ASTROSAT CZTI

Data Quality Report

Orbit 08653

Creation date: 2024-06-27T15:35:28.991837
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/AS1G07_024T01_9000001206_08653cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08653cztM0_level2_quad_clean.evt
Size (bytes)435,283,200119,764,800
Size415.1 MB 114.2 MB
Events in quadrant A2,886,886798,188
Events in quadrant B3,164,785822,114
Events in quadrant C2,949,414813,921
Events in quadrant D3,758,405758,889

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128992
B0136731
C0130121
D0155581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6223250.401735%
B6223590.948096%
C6223420.674916%
D62232794.483368%

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 7408 6223 3 3 0.04% 0.05%
B 7408 6223 15 15 0.20% 0.24%
C 7408 6223 5 5 0.07% 0.08%
D 7407 6222 234 234 3.16% 3.76%

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 5 56252 379.01 725 710 146.5
A 15 174 28442 189.24 725 710 146.5
A 0 226 6776 41.39 725 710 146.5
B 10 246 99701 721.84 738 720 137.1
B 0 219 65454 472.09 738 720 137.1
B 0 168 41673 298.66 738 720 137.1
C 4 254 97884 587.64 723 727 165.3
C 14 67 14941 85.97 723 727 165.3
C 14 234 13279 75.92 723 727 165.3
D 10 253 614074 3584.53 707 685 171.1
D 12 233 168218 979.03 707 685 171.1
D 1 52 145787 847.95 707 685 171.1

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