ASTROSAT CZTI

Data Quality Report

Orbit 27767

Creation date: 2024-06-27T19:44:10.021124
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/AS1A09_038T34_9000004008_27767cztM0_level2.evt modeM0/AS1A09_038T34_9000004008_27767cztM0_level2_quad_clean.evt
Size (bytes)439,574,400119,888,640
Size419.2 MB 114.3 MB
Events in quadrant A2,986,311815,692
Events in quadrant B3,207,461823,040
Events in quadrant C3,492,515777,603
Events in quadrant D3,189,515766,840

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132900
B0137910
C0143770
D0140180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64121191.855895%
B64111812.823273%
C64111892.948058%
D64111512.355327%

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 6667 6413 0 0 0.00% 0.00%
B 6666 6411 19 19 0.29% 0.30%
C 6666 6411 7 7 0.11% 0.11%
D 6666 6411 57 57 0.86% 0.89%

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 13 170 35521 227.38 762 743 152.9
A 13 254 11147 68.02 762 743 152.9
A 3 137 7269 42.67 762 743 152.9
B 3 64 115409 795.57 757 737 144.1
B 0 190 30435 206.04 757 737 144.1
B 0 230 25763 173.63 757 737 144.1
C 3 233 482262 2809.75 730 733 171.4
C 14 238 115757 671.17 730 733 171.4
C 2 16 32429 184.95 730 733 171.4
D 1 52 130399 734.91 736 711 176.5
D 14 35 115241 649.02 736 711 176.5
D 2 250 95504 537.17 736 711 176.5

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