ASTROSAT CZTI

Data Quality Report

Orbit 34816

Creation date: 2022-03-07T13:29:20.052439
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/AS1C07_005T01_9000004992_34816cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34816cztM0_level2_quad_clean.evt
Size (bytes)762,704,64084,568,320
Size727.4 MB 80.7 MB
Events in quadrant A3,335,606676,040
Events in quadrant B12,677,010203,154
Events in quadrant C3,117,350674,557
Events in quadrant D3,617,620641,164

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132053
B0411342
C0122872
D0143492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5189320.616689%
B5189487894.006552%
C51891312.524571%
D51891352.601657%

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 7042 5190 16 16 0.23% 0.31%
B 7042 5190 4667 4667 66.27% 89.92%
C 7042 5190 102 102 1.45% 1.97%
D 7042 5190 125 125 1.78% 2.41%

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 15 169 891617 7324.63 602 591 121.6
A 15 174 53636 436.05 602 591 121.6
A 10 83 51160 415.7 602 591 121.6
B 4 251 11505577 270133.96 220 215 42.6
B 5 255 145611 3413.75 220 215 42.6
B 15 222 78227 1831.64 220 215 42.6
C 15 214 241211 1789.84 584 586 134.4
C 0 207 228978 1698.85 584 586 134.4
C 0 10 189140 1402.52 584 586 134.4
D 8 195 584777 3812.95 581 569 153.2
D 13 249 235172 1531.18 581 569 153.2
D 12 233 91711 594.86 581 569 153.2

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