ASTROSAT CZTI

Data Quality Report

Orbit 24656

Creation date: 2024-06-27T19:08:27.047482
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_191T01_9000003618_24656cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24656cztM0_level2_quad_clean.evt
Size (bytes)573,220,800144,682,560
Size546.7 MB 138.0 MB
Events in quadrant A3,648,687988,563
Events in quadrant B3,743,007996,248
Events in quadrant C3,800,484938,267
Events in quadrant D5,645,844923,664

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160742
B0161982
C0160913
D0221642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7699911.181972%
B77001201.558442%
C76991301.688531%
D76992062.675672%

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 8254 7701 4 4 0.05% 0.05%
B 8255 7702 0 0 0.00% 0.00%
C 8254 7701 7 7 0.08% 0.09%
D 8254 7701 101 101 1.22% 1.31%

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 6 16 49367 259.02 926 904 187.1
A 12 96 24288 124.98 926 904 187.1
A 13 254 13740 68.61 926 904 187.1
B 0 190 46661 259.72 919 896 176.2
B 0 189 42038 233.49 919 896 176.2
B 12 111 21657 117.82 919 896 176.2
C 7 247 171534 827.04 877 878 206.3
C 14 238 139329 670.97 877 878 206.3
C 10 91 22729 105.9 877 878 206.3
D 8 195 1216668 5637.33 890 862 215.7
D 1 52 709715 3286.74 890 862 215.7
D 7 238 190025 877.09 890 862 215.7

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