ASTROSAT CZTI

Data Quality Report

Orbit 20221201_A12_061T07_9000005402_level2

Creation date: 2022-12-05T16:53:22.283447
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/AS1A12_061T07_9000005402cztM0_level2.fits modeM0/AS1A12_061T07_9000005402cztM0_level2_quad_clean.evt
Size (bytes)575,513,280594,751,680
Size548.9 MB 567.2 MB
Events in quadrant A3,446,2843,606,375
Events in quadrant B3,355,4203,624,478
Events in quadrant C3,419,6323,383,782
Events in quadrant D2,899,8363,089,430

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012800
B012800
C012800
D012800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400350
B01283130
C01306630
D01744360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A628302920.464746%
B628301510.240331%
C628302480.394716%
D6283016332.599077%

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 87086 62830 0 0 0.00% 0.00%
B 87086 62830 0 0 0.00% 0.00%
C 87086 62830 0 0 0.00% 0.00%
D 87086 62817 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 0 29 2793 8.53 899 841 228.8
A 7 110 2787 8.51 899 841 228.8
A 9 19 2719 8.21 899 841 228.8
B 2 9 2886 11.77 886 844 173.6
B 3 80 2617 10.22 886 844 173.6
B 2 8 2364 8.76 886 844 173.6
C 1 81 2766 8.27 902 848 231.9
C 3 202 2729 8.11 902 848 231.9
C 1 80 2698 7.98 902 848 231.9
D 4 160 2138 6.26 828 756 220.7
D 7 3 2085 6.02 828 756 220.7
D 1 3 2065 5.93 828 756 220.7

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