ASTROSAT CZTI

Data Quality Report

Orbit 25833

Creation date: 2024-06-27T19:21:55.579660
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_068T01_9000003756_25833cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25833cztM0_level2_quad_clean.evt
Size (bytes)467,447,040105,045,120
Size445.8 MB 100.2 MB
Events in quadrant A3,141,794712,041
Events in quadrant B3,116,713710,384
Events in quadrant C3,127,129669,920
Events in quadrant D4,351,482657,612

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133431
B0131721
C0132771
D0171911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6185761.228779%
B6185691.115602%
C61851031.665319%
D61862484.009053%

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 7215 6186 0 0 0.00% 0.00%
B 7215 6186 2 2 0.03% 0.03%
C 7215 6186 0 0 0.00% 0.00%
D 7216 6187 181 181 2.51% 2.93%

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 0 13 68631 425.66 794 779 159.4
A 6 16 10391 60.3 794 779 159.4
A 3 137 7195 40.25 794 779 159.4
B 0 219 38034 250.26 774 754 149.0
B 0 245 25046 163.07 774 754 149.0
B 12 111 18099 116.44 774 754 149.0
C 14 238 120667 685.86 744 749 174.8
C 3 233 87241 494.68 744 749 174.8
C 14 225 17991 98.61 744 749 174.8
D 7 80 598511 3322.71 751 731 179.9
D 1 52 361824 2007.1 751 731 179.9
D 12 233 348832 1934.89 751 731 179.9

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