ASTROSAT CZTI

Data Quality Report

Orbit 20240415_A13_065T07_9000006188_level2

Creation date: 2024-04-17T14:03:22.458090
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/AS1A13_065T07_9000006188cztM0_level2.fits modeM0/AS1A13_065T07_9000006188cztM0_level2_quad_clean.evt
Size (bytes)586,261,440628,280,640
Size559.1 MB 599.2 MB
Events in quadrant A3,424,7363,699,067
Events in quadrant B3,356,9083,828,587
Events in quadrant C3,480,8043,723,256
Events in quadrant D2,947,9683,235,087

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02182720
B01542880
C01435720
D01727950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013420
B013420
C013420
D013420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6621520523.098996%
B6622112471.883088%
C662239901.494949%
D6622433014.984598%

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 79411 66217 0 0 0.00% 0.00%
B 79411 66217 0 0 0.00% 0.00%
C 79411 66198 0 0 0.00% 0.00%
D 79411 66108 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 7 110 2667 7.96 892 831 230.6
A 0 29 2651 7.89 892 831 230.6
A 15 236 2649 7.88 892 831 230.6
B 2 9 3159 13.14 888 845 176.2
B 2 8 2547 9.66 888 845 176.2
B 3 17 2412 8.9 888 845 176.2
C 3 202 2640 7.42 920 852 241.0
C 3 203 2608 7.29 920 852 241.0
C 1 81 2572 7.14 920 852 241.0
D 15 47 2233 6.21 847 769 235.7
D 7 3 2115 5.71 847 769 235.7
D 10 189 2110 5.69 847 769 235.7

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