ASTROSAT CZTI

Data Quality Report

Orbit 22785

Creation date: 2024-06-27T18:45:43.604228
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_168T01_9000003368_22785cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22785cztM0_level2_quad_clean.evt
Size (bytes)432,120,960132,632,640
Size412.1 MB 126.5 MB
Events in quadrant A3,082,549916,908
Events in quadrant B3,179,960921,181
Events in quadrant C3,124,994877,021
Events in quadrant D3,273,535865,194

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129791
B0131841
C0131581
D0137451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62651081.723863%
B6266901.436323%
C62661392.218321%
D6266981.563996%

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 7360 6266 0 0 0.00% 0.00%
B 7361 6267 0 0 0.00% 0.00%
C 7361 6267 16 16 0.22% 0.26%
D 7361 6267 15 15 0.20% 0.24%

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 11476 67.91 798 785 157.4
A 0 226 6931 39.04 798 785 157.4
A 3 137 6241 34.66 798 785 157.4
B 0 228 38909 263.93 789 773 144.5
B 0 190 18380 121.85 789 773 144.5
B 0 230 16963 112.05 789 773 144.5
C 14 238 123483 715.4 751 758 171.5
C 10 22 70628 407.29 751 758 171.5
C 13 61 5325 26.62 751 758 171.5
D 1 52 145545 790.79 769 749 183.1
D 7 38 77421 418.74 769 749 183.1
D 12 227 29387 156.4 769 749 183.1

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