ASTROSAT CZTI

Data Quality Report

Orbit 24766

Creation date: 2024-06-27T19:09:38.764398
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_147T01_9000003624_24766cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24766cztM0_level2_quad_clean.evt
Size (bytes)473,086,08066,234,240
Size451.2 MB 63.2 MB
Events in quadrant A3,400,801407,106
Events in quadrant B3,547,758411,358
Events in quadrant C3,355,698384,022
Events in quadrant D3,609,713377,348

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136412
B0142542
C0134752
D0143463

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6094420.689202%
B6094801.312767%
C6094691.132261%
D6093350.574430%

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 7449 6095 1 1 0.01% 0.02%
B 7449 6095 7 7 0.09% 0.11%
C 7449 6095 0 0 0.00% 0.00%
D 7448 6094 17 17 0.23% 0.28%

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 96 9051 47.16 879 866 173.6
A 13 254 8067 41.49 879 866 173.6
A 0 226 7590 38.74 879 866 173.6
B 3 64 115129 707.64 867 850 161.5
B 12 111 19236 113.85 867 850 161.5
B 11 111 17450 102.79 867 850 161.5
C 14 238 133361 702.67 817 825 188.6
C 2 16 18708 94.81 817 825 188.6
C 7 247 16259 81.83 817 825 188.6
D 8 195 224384 1117.66 830 808 200.0
D 12 233 220807 1099.77 830 808 200.0
D 1 52 35465 173.25 830 808 200.0

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