ASTROSAT CZTI

Data Quality Report

Orbit 31873

Creation date: 2024-06-27T20:33:44.468599
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/AS1A10_109T01_9000004646_31873cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31873cztM0_level2_quad_clean.evt
Size (bytes)600,356,160101,957,760
Size572.5 MB 97.2 MB
Events in quadrant A3,799,145686,396
Events in quadrant B5,555,147675,145
Events in quadrant C4,000,285641,360
Events in quadrant D4,387,252630,939

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154562
B0207592
C0161012
D0173552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65111041.597297%
B65111852.841345%
C65112313.547842%
D65111472.257718%

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 7771 6512 0 0 0.00% 0.00%
B 7771 6512 2 2 0.03% 0.03%
C 7771 6512 17 17 0.22% 0.26%
D 7771 6512 62 62 0.80% 0.95%

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 13 254 11115 52.1 983 971 194.7
A 13 6 9899 45.85 983 971 194.7
A 3 137 9046 41.47 983 971 194.7
B 6 159 1686010 9550.64 951 932 176.4
B 0 218 51083 284.24 951 932 176.4
B 10 247 32767 180.43 951 932 176.4
C 3 233 172431 823.47 907 918 208.3
C 14 238 157540 751.98 907 918 208.3
C 0 10 100476 478.0 907 918 208.3
D 8 195 556286 2531.09 929 908 219.4
D 12 218 229693 1042.67 929 908 219.4
D 12 79 39283 174.89 929 908 219.4

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