ASTROSAT CZTI

Data Quality Report

Orbit 16596

Creation date: 2024-06-27T17:24:51.282943
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/AS1C04_001T01_9000002446_16596cztM0_level2.evt modeM0/AS1C04_001T01_9000002446_16596cztM0_level2_quad_clean.evt
Size (bytes)463,803,840126,501,120
Size442.3 MB 120.6 MB
Events in quadrant A3,194,904853,061
Events in quadrant B3,486,432856,611
Events in quadrant C3,222,501824,953
Events in quadrant D3,661,964804,595

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144291
B0150131
C0143501
D0161821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7074801.130902%
B7074791.116766%
C7074811.145038%
D7074891.258128%

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 7551 7076 4 4 0.05% 0.06%
B 7551 7076 2 2 0.03% 0.03%
C 7551 7076 0 0 0.00% 0.00%
D 7551 7076 25 25 0.33% 0.35%

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 15 174 34895 206.18 812 794 165.4
A 9 143 33810 199.62 812 794 165.4
A 0 226 7067 37.93 812 794 165.4
B 15 35 103894 663.66 809 784 155.4
B 0 229 66398 422.32 809 784 155.4
B 0 85 43215 273.1 809 784 155.4
C 14 238 120639 660.58 773 777 181.4
C 3 233 78695 429.42 773 777 181.4
C 7 247 9014 45.39 773 777 181.4
D 1 52 549787 2846.95 783 757 192.8
D 10 70 77071 395.72 783 757 192.8
D 2 33 35710 181.25 783 757 192.8

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