ASTROSAT CZTI

Data Quality Report

Orbit 17722

Creation date: 2024-06-27T17:40:02.913106
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/AS1T03_042T01_9000002630_17722cztM0_level2.evt modeM0/AS1T03_042T01_9000002630_17722cztM0_level2_quad_clean.evt
Size (bytes)520,853,76090,146,880
Size496.7 MB 86.0 MB
Events in quadrant A3,415,023566,990
Events in quadrant B3,398,618578,907
Events in quadrant C3,365,294552,964
Events in quadrant D5,100,832524,170

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150231
B0148541
C0147601
D0201721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7275981.347079%
B7276971.333150%
C72761281.759208%
D72764756.528312%

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 7590 7275 0 0 0.00% 0.00%
B 7591 7277 1 1 0.01% 0.01%
C 7591 7277 0 0 0.00% 0.00%
D 7591 7277 322 322 4.24% 4.42%

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 16 99581 562.98 855 835 175.4
A 12 194 22519 123.63 855 835 175.4
A 0 226 7323 36.99 855 835 175.4
B 0 219 20740 120.95 851 830 164.6
B 12 111 20136 117.28 851 830 164.6
B 11 111 17428 100.83 851 830 164.6
C 14 238 126233 655.57 812 815 191.3
C 3 233 44374 227.69 812 815 191.3
C 5 218 28189 143.09 812 815 191.3
D 7 238 1707665 7959.43 800 779 214.4
D 5 222 115402 534.5 800 779 214.4
D 1 52 94956 439.16 800 779 214.4

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