ASTROSAT CZTI

Data Quality Report

Orbit 23870

Creation date: 2024-06-27T18:59:35.231955
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/AS1A07_001T01_9000003538_23870cztM0_level2.evt modeM0/AS1A07_001T01_9000003538_23870cztM0_level2_quad_clean.evt
Size (bytes)434,626,560127,097,280
Size414.5 MB 121.2 MB
Events in quadrant A3,140,890865,254
Events in quadrant B2,979,346898,336
Events in quadrant C2,984,030849,327
Events in quadrant D3,654,870821,848

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130751
B0124572
C0124971
D0146951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5936991.667790%
B5935470.791912%
C5935911.533277%
D59351041.752317%

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 7221 5937 60 60 0.83% 1.01%
B 7220 5936 1 1 0.01% 0.02%
C 7220 5936 9 9 0.12% 0.15%
D 7220 5936 98 98 1.36% 1.65%

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 4 2 251432 1685.99 748 734 148.7
A 13 254 10022 62.46 748 734 148.7
A 2 250 6861 41.21 748 734 148.7
B 12 111 15990 108.83 755 738 140.1
B 11 111 14128 95.55 755 738 140.1
B 14 111 12481 83.79 755 738 140.1
C 14 238 117385 705.77 720 726 165.3
C 0 10 47812 284.86 720 726 165.3
C 7 247 14009 80.36 720 726 165.3
D 1 52 457301 2641.44 722 702 172.9
D 8 195 338259 1952.78 722 702 172.9
D 7 238 105269 604.92 722 702 172.9

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