ASTROSAT CZTI

Data Quality Report

Orbit 17707

Creation date: 2024-06-27T17:39:50.844340
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/AS1T03_040T01_9000002628_17707cztM0_level2.evt modeM0/AS1T03_040T01_9000002628_17707cztM0_level2_quad_clean.evt
Size (bytes)626,829,12084,078,720
Size597.8 MB 80.2 MB
Events in quadrant A3,333,154539,710
Events in quadrant B3,894,048547,943
Events in quadrant C3,467,271525,507
Events in quadrant D7,798,574428,525

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148622
B0163001
C0148621
D0280691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72321592.198562%
B72332353.248998%
C72331852.557722%
D7233160222.148486%

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 7417 7234 0 0 0.00% 0.00%
B 7418 7235 53 53 0.71% 0.73%
C 7418 7235 2 2 0.03% 0.03%
D 7418 7233 1219 1219 16.43% 16.85%

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 15 174 32390 179.2 858 839 176.1
A 0 226 7406 37.3 858 839 176.1
A 3 137 6590 32.66 858 839 176.1
B 10 245 235815 1422.8 853 829 165.2
B 0 189 116451 700.07 853 829 165.2
B 5 172 80944 485.08 853 829 165.2
C 14 238 124827 643.23 817 821 192.8
C 3 233 90096 463.07 817 821 192.8
C 5 218 49801 254.06 817 821 192.8
D 7 238 4992473 28140.61 725 703 177.4
D 2 234 27958 153.65 725 703 177.4
D 10 70 19975 108.64 725 703 177.4

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