ASTROSAT CZTI

Data Quality Report

Orbit 31874

Creation date: 2024-06-27T20:33:45.235622
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_109T01_9000004646_31874cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31874cztM0_level2_quad_clean.evt
Size (bytes)593,046,720116,472,960
Size565.6 MB 111.1 MB
Events in quadrant A3,782,922803,690
Events in quadrant B5,459,145788,105
Events in quadrant C3,993,977749,906
Events in quadrant D4,290,759738,339

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155832
B0204605
C0162752
D0171702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6419931.448824%
B64181702.648800%
C64182063.209723%
D6418630.981614%

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 7744 6420 0 0 0.00% 0.00%
B 7743 6419 2 2 0.03% 0.03%
C 7743 6419 10 10 0.13% 0.16%
D 7743 6419 11 11 0.14% 0.17%

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 9621 44.88 978 966 192.8
A 3 137 8735 40.29 978 966 192.8
A 0 226 8265 37.85 978 966 192.8
B 6 159 1660229 9501.6 943 925 174.6
B 10 245 49889 280.38 943 925 174.6
B 10 247 21327 116.83 943 925 174.6
C 14 238 155483 737.04 910 921 209.7
C 3 233 147619 699.54 910 921 209.7
C 0 10 86368 407.46 910 921 209.7
D 8 195 445925 2033.91 935 915 218.8
D 1 52 119531 542.13 935 915 218.8
D 5 243 113369 513.97 935 915 218.8

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