ASTROSAT CZTI

Data Quality Report

Orbit 16326

Creation date: 2024-06-27T17:21:04.204900
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/AS1A05_096T04_9000002406_16326cztM0_level2.evt modeM0/AS1A05_096T04_9000002406_16326cztM0_level2_quad_clean.evt
Size (bytes)597,844,800112,501,440
Size570.1 MB 107.3 MB
Events in quadrant A3,395,461778,207
Events in quadrant B7,549,004637,160
Events in quadrant C3,340,060788,804
Events in quadrant D3,390,336759,125

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140223
B0268292
C0136842
D0139562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63501131.779528%
B6350193830.519685%
C6350781.228346%
D6350580.913386%

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 7686 6352 51 51 0.66% 0.80%
B 7686 6352 1395 1395 18.15% 21.96%
C 7686 6352 0 0 0.00% 0.00%
D 7686 6352 38 38 0.49% 0.60%

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 15 174 269729 1688.64 812 797 159.3
A 0 226 7139 39.82 812 797 159.3
A 12 194 6027 32.84 812 797 159.3
B 3 112 4760917 39088.26 673 658 121.8
B 0 189 55511 450.42 673 658 121.8
B 4 173 41952 339.08 673 658 121.8
C 14 238 129584 683.22 818 824 188.5
C 0 207 13021 64.72 818 824 188.5
C 3 233 10220 49.86 818 824 188.5
D 2 14 158070 804.53 817 795 195.5
D 1 52 55414 279.4 817 795 195.5
D 13 104 30022 149.51 817 795 195.5

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