ASTROSAT CZTI

Data Quality Report

Orbit 20230918_T05_154T01_9000005850_level2

Creation date: 2023-09-20T10:26:24.088692
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/AS1T05_154T01_9000005850cztM0_level2.fits modeM0/AS1T05_154T01_9000005850cztM0_level2_quad_clean.evt
Size (bytes)590,483,520945,918,720
Size563.1 MB 902.1 MB
Events in quadrant A3,402,6246,010,424
Events in quadrant B3,399,9446,382,527
Events in quadrant C3,462,3806,103,232
Events in quadrant D2,984,1605,525,051

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940440
B01386310
C01413480
D01759950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013820
B013820
C013820
D013820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02590
B02590
C02590
D02590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6751752227.734348%
B675172230.330287%
C675171450.214761%
D6751722383.314721%

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 93484 67306 0 0 0.00% 0.00%
B 93485 67516 0 0 0.00% 0.00%
C 93485 67517 0 0 0.00% 0.00%
D 93485 67482 0 0 0.00% 0.00%

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 9 19 2914 9.32 888 837 222.9
A 0 29 2789 8.76 888 837 222.9
A 7 110 2739 8.53 888 837 222.9
B 2 9 3039 12.53 897 859 174.0
B 2 8 2504 9.45 897 859 174.0
B 3 80 2460 9.2 897 859 174.0
C 1 81 2955 8.89 915 854 236.4
C 1 80 2757 8.05 915 854 236.4
C 3 203 2707 7.84 915 854 236.4
D 10 189 2297 6.61 853 777 229.8
D 6 62 2155 6.0 853 777 229.8
D 4 160 2155 6.0 853 777 229.8

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