ASTROSAT CZTI

Data Quality Report

Orbit 12567

Creation date: 2024-06-27T16:29:19.843860
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/AS1C03_021T01_9000001864_12567cztM0_level2.evt modeM0/AS1C03_021T01_9000001864_12567cztM0_level2_quad_clean.evt
Size (bytes)496,339,200102,942,720
Size473.3 MB 98.2 MB
Events in quadrant A3,583,024647,258
Events in quadrant B3,692,503665,977
Events in quadrant C3,477,980653,733
Events in quadrant D3,763,142623,382

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157113
B0158942
C0156122
D0164332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7579941.240269%
B75791181.556934%
C7579510.672912%
D7579931.227075%

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 8820 7584 0 0 0.00% 0.00%
B 8820 7583 2 2 0.02% 0.03%
C 8820 7584 0 0 0.00% 0.00%
D 8820 7584 46 46 0.52% 0.61%

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 44814 234.22 911 891 187.5
A 1 162 14074 70.3 911 891 187.5
A 1 178 8499 40.57 911 891 187.5
B 11 51 73117 405.05 912 888 178.3
B 0 214 26835 145.51 912 888 178.3
B 12 111 20801 111.67 912 888 178.3
C 13 61 6536 27.03 890 896 208.6
C 14 234 3088 10.51 890 896 208.6
C 0 15 3013 10.15 890 896 208.6
D 1 52 194229 904.37 879 854 213.8
D 13 249 94702 438.91 879 854 213.8
D 8 195 43996 201.77 879 854 213.8

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