ASTROSAT CZTI

Data Quality Report

Orbit 14436

Creation date: 2024-06-27T16:55:09.924528
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/AS1G08_025T01_9000002130_14436cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14436cztM0_level2_quad_clean.evt
Size (bytes)535,317,12088,528,320
Size510.5 MB 84.4 MB
Events in quadrant A3,615,544555,549
Events in quadrant B3,649,104552,620
Events in quadrant C4,024,434543,764
Events in quadrant D4,428,672521,636

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153152
B0154671
C0162431
D0180421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72781712.349547%
B72781862.555647%
C72781692.322067%
D72784255.839516%

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 7439 7279 0 0 0.00% 0.00%
B 7439 7279 6 6 0.08% 0.08%
C 7439 7279 0 0 0.00% 0.00%
D 7439 7279 288 288 3.87% 3.96%

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 12 189 128501 708.31 879 861 180.2
A 8 15 99642 548.17 879 861 180.2
A 0 226 7811 38.57 879 861 180.2
B 0 219 104433 618.96 867 844 167.4
B 3 209 48703 285.96 867 844 167.4
B 4 80 27257 157.82 867 844 167.4
C 3 233 725503 3692.57 841 843 196.2
C 14 234 10959 51.55 841 843 196.2
C 13 61 6193 27.26 841 843 196.2
D 10 199 800579 3987.3 835 812 200.6
D 2 120 268049 1332.33 835 812 200.6
D 12 110 129529 641.73 835 812 200.6

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