ASTROSAT CZTI

Data Quality Report

Orbit 24412

Creation date: 2024-06-27T19:05:45.195778
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_001T03_9000003602_24412cztM0_level2.evt modeM0/AS1A07_001T03_9000003602_24412cztM0_level2_quad_clean.evt
Size (bytes)628,447,680151,686,720
Size599.3 MB 144.7 MB
Events in quadrant A4,161,7381,005,668
Events in quadrant B4,253,6501,015,508
Events in quadrant C4,180,000980,275
Events in quadrant D5,806,538947,916

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187671
B0188981
C0187871
D0233761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9304640.687876%
B9305730.784524%
C9305991.063944%
D93052282.450296%

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 9829 9305 0 0 0.00% 0.00%
B 9830 9306 3 3 0.03% 0.03%
C 9830 9306 0 0 0.00% 0.00%
D 9830 9306 167 167 1.70% 1.79%

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 15874 68.37 1077 1053 216.8
A 0 226 9643 39.62 1077 1053 216.8
A 3 137 9595 39.4 1077 1053 216.8
B 0 190 33100 156.12 1067 1037 205.4
B 12 111 25046 116.9 1067 1037 205.4
B 11 111 22223 103.16 1067 1037 205.4
C 14 238 163465 678.76 1026 1029 239.3
C 7 247 15724 61.4 1026 1029 239.3
C 13 61 7081 25.29 1026 1029 239.3
D 1 52 1467854 5777.78 1036 1004 253.9
D 8 195 332312 1304.99 1036 1004 253.9
D 2 234 51839 200.23 1036 1004 253.9

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