ASTROSAT CZTI

Data Quality Report

Orbit 11505

Creation date: 2024-06-27T16:13:55.050747
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/AS1A04_021T05_9000001686_11505cztM0_level2.evt modeM0/AS1A04_021T05_9000001686_11505cztM0_level2_quad_clean.evt
Size (bytes)661,377,60082,702,080
Size630.7 MB 78.9 MB
Events in quadrant A7,826,808475,788
Events in quadrant B4,360,160524,198
Events in quadrant C3,109,980551,760
Events in quadrant D4,302,512507,814

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277313
B0170732
C0132442
D0168912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6363139321.892189%
B63632884.526167%
C6363400.628634%
D63632263.551784%

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 7579 6365 1016 1016 13.41% 15.96%
B 7579 6365 116 116 1.53% 1.82%
C 7579 6365 0 0 0.00% 0.00%
D 7579 6365 158 158 2.08% 2.48%

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 8 5 4603510 29472.38 774 760 156.2
A 15 223 104300 662.99 774 760 156.2
A 15 239 51041 321.96 774 760 156.2
B 4 239 692584 4561.48 815 798 151.7
B 3 64 206270 1354.84 815 798 151.7
B 11 51 134594 882.22 815 798 151.7
C 12 4 8983 44.97 795 802 181.9
C 13 61 5770 27.31 795 802 181.9
C 14 234 2818 11.08 795 802 181.9
D 1 52 772435 4143.7 789 771 186.2
D 2 120 142475 760.93 789 771 186.2
D 13 137 128189 684.21 789 771 186.2

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