ASTROSAT CZTI

Data Quality Report

Orbit 31179

Creation date: 2024-06-27T20:24:21.472519
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/AS1A10_058T02_9000004510_31179cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31179cztM0_level2_quad_clean.evt
Size (bytes)640,183,68069,056,640
Size610.5 MB 65.9 MB
Events in quadrant A3,746,294425,931
Events in quadrant B5,686,618419,515
Events in quadrant C3,980,095399,821
Events in quadrant D5,538,522394,552

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153072
B0209052
C0159602
D0212152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64641011.562500%
B64642243.465347%
C64642724.207921%
D64641622.506188%

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 7779 6465 1 1 0.01% 0.02%
B 7779 6465 21 21 0.27% 0.32%
C 7779 6465 39 39 0.50% 0.60%
D 7779 6465 45 45 0.58% 0.70%

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 28161 142.92 965 951 190.4
A 13 254 11852 57.26 965 951 190.4
A 3 137 8770 41.07 965 951 190.4
B 6 159 1678875 9631.98 934 917 174.2
B 12 18 206608 1180.73 934 917 174.2
B 4 80 76310 432.78 934 917 174.2
C 0 10 249392 1212.01 899 909 205.0
C 14 238 160040 776.18 899 909 205.0
C 14 254 16660 76.83 899 909 205.0
D 8 195 1699109 7947.91 925 909 213.7
D 2 250 130973 608.72 925 909 213.7
D 2 69 109470 508.09 925 909 213.7

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