ASTROSAT CZTI

Data Quality Report

Orbit 14127

Creation date: 2024-06-27T16:50:36.495682
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/AS1A04_149T01_9000002082_14127cztM0_level2.evt modeM0/AS1A04_149T01_9000002082_14127cztM0_level2_quad_clean.evt
Size (bytes)482,932,800128,088,000
Size460.6 MB 122.2 MB
Events in quadrant A3,014,947889,102
Events in quadrant B3,673,019889,507
Events in quadrant C3,020,610861,447
Events in quadrant D4,510,564821,095

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126442
B0148311
C0126571
D0173571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5995791.317765%
B59952243.736447%
C5995661.100917%
D59953135.221018%

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 7321 5998 2 2 0.03% 0.03%
B 7321 5998 64 64 0.87% 1.07%
C 7321 5998 0 0 0.00% 0.00%
D 7321 5998 237 237 3.24% 3.95%

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 38098 243.44 770 758 153.4
A 13 248 10470 63.32 770 758 153.4
A 0 226 6896 40.02 770 758 153.4
B 0 85 588138 4217.26 757 741 139.3
B 3 209 41034 289.28 757 741 139.3
B 0 189 38047 267.84 757 741 139.3
C 3 233 174087 1042.92 729 734 166.2
C 13 61 5296 27.45 729 734 166.2
C 0 207 2911 13.1 729 734 166.2
D 1 52 1101931 6485.49 722 704 169.8
D 10 157 233478 1370.88 722 704 169.8
D 8 195 203681 1195.4 722 704 169.8

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