ASTROSAT CZTI

Data Quality Report

Orbit 11205

Creation date: 2024-06-27T16:09:43.998365
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_171T01_9000001634_11205cztM0_level2.evt modeM0/AS1A04_171T01_9000001634_11205cztM0_level2_quad_clean.evt
Size (bytes)582,157,44082,707,840
Size555.2 MB 78.9 MB
Events in quadrant A6,779,412477,580
Events in quadrant B3,644,079529,796
Events in quadrant C3,127,496524,690
Events in quadrant D3,618,880498,347

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01422

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025309646
B015410190
C014133154
D015670146

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6778105615.579817%
B67941632.399176%
C6795580.853569%
D68011321.940891%

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 8968 6795 777 777 8.66% 11.43%
B 8990 6808 38 38 0.42% 0.56%
C 8986 6807 1 1 0.01% 0.01%
D 9006 6814 76 76 0.84% 1.12%

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 15 239 3306405 21291.68 759 745 155.3
A 8 15 321398 2065.32 759 745 155.3
A 8 5 158970 1019.12 759 745 155.3
B 4 239 324576 2089.77 810 788 154.9
B 4 80 42307 267.97 810 788 154.9
B 4 81 40443 255.94 810 788 154.9
C 13 61 5778 26.69 801 804 186.4
C 14 234 4907 22.02 801 804 186.4
C 3 202 1960 6.2 801 804 186.4
D 2 14 284061 1511.77 785 763 187.4
D 2 136 218815 1163.6 785 763 187.4
D 13 152 50204 263.83 785 763 187.4

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