ASTROSAT CZTI

Data Quality Report

Orbit 20683

Creation date: 2024-06-27T18:18:18.980436
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_229T02_9000003060_20683cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20683cztM0_level2_quad_clean.evt
Size (bytes)546,730,560103,622,400
Size521.4 MB 98.8 MB
Events in quadrant A3,438,862693,985
Events in quadrant B3,586,472696,256
Events in quadrant C3,470,288672,723
Events in quadrant D5,636,323636,621

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143182
B0147342
C0144552
D0213052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62791211.927058%
B62781452.309653%
C62781772.819369%
D62793715.908584%

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 8789 6280 0 0 0.00% 0.00%
B 8788 6280 8 8 0.09% 0.13%
C 8788 6280 0 0 0.00% 0.00%
D 8789 6281 345 345 3.93% 5.49%

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 0 226 7824 39.23 895 882 176.9
A 3 137 6622 32.44 895 882 176.9
A 12 194 6467 31.56 895 882 176.9
B 7 220 68729 413.37 882 863 164.2
B 0 190 24567 144.38 882 863 164.2
B 0 229 20852 121.75 882 863 164.2
C 14 238 137226 703.07 847 858 194.0
C 7 247 17401 85.29 847 858 194.0
C 3 233 15880 77.45 847 858 194.0
D 12 227 2180205 10576.31 864 841 206.1
D 1 52 70734 339.19 864 841 206.1
D 13 153 55772 266.58 864 841 206.1

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