ASTROSAT CZTI

Data Quality Report

Orbit 27535

Creation date: 2024-06-27T19:41:07.503897
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_038T15_9000003936_27535cztM0_level2.evt modeM0/AS1A09_038T15_9000003936_27535cztM0_level2_quad_clean.evt
Size (bytes)442,336,32083,335,680
Size421.8 MB 79.5 MB
Events in quadrant A2,563,788552,177
Events in quadrant B2,757,351560,520
Events in quadrant C2,713,205535,311
Events in quadrant D4,991,426493,854

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110740
B0116330
C0116420
D0184160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A545490.165017%
B5455460.843263%
C5455911.668194%
D545564211.769019%

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 5454 5454 7 7 0.13% 0.13%
B 5455 5455 27 27 0.49% 0.49%
C 5455 5455 53 53 0.97% 0.97%
D 5455 5455 644 644 11.81% 11.81%

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 0 13 94227 734.1 630 617 127.5
A 6 16 22458 171.28 630 617 127.5
A 0 31 11676 86.73 630 617 127.5
B 10 245 171181 1430.33 628 612 119.3
B 0 230 65196 541.58 628 612 119.3
B 15 33 27170 222.71 628 612 119.3
C 2 16 237036 1657.53 606 609 142.6
C 14 238 97911 682.16 606 609 142.6
C 1 16 10234 67.48 606 609 142.6
D 1 52 2037214 14626.56 580 564 139.2
D 7 80 481922 3456.96 580 564 139.2
D 2 250 118877 849.69 580 564 139.2

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