ASTROSAT CZTI

Data Quality Report

Orbit 24953

Creation date: 2024-06-27T19:11:52.738974
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_200T01_9000003654_24953cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24953cztM0_level2_quad_clean.evt
Size (bytes)470,715,840133,246,080
Size448.9 MB 127.1 MB
Events in quadrant A3,017,426912,049
Events in quadrant B3,375,054943,579
Events in quadrant C3,388,822900,335
Events in quadrant D4,056,310849,993

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129902
B0139712
C0141412
D0162662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6164130.210902%
B6165621.005677%
C6165631.021898%
D6164841.362751%

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 7495 6166 0 0 0.00% 0.00%
B 7495 6166 15 15 0.20% 0.24%
C 7495 6166 2 2 0.03% 0.03%
D 7494 6165 46 46 0.61% 0.75%

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 9439 56.61 780 766 153.2
A 0 226 6759 39.11 780 766 153.2
A 11 208 6528 37.61 780 766 153.2
B 3 64 181161 1277.59 786 771 141.2
B 10 251 24564 168.51 786 771 141.2
B 4 80 18529 125.77 786 771 141.2
C 7 247 242645 1392.49 761 768 173.7
C 14 238 124154 710.33 761 768 173.7
C 7 252 29413 164.91 761 768 173.7
D 1 3 473989 2635.2 751 731 179.6
D 8 195 356390 1980.38 751 731 179.6
D 1 52 227285 1261.5 751 731 179.6

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