ASTROSAT CZTI

Data Quality Report

Orbit 23089

Creation date: 2024-06-27T18:49:36.888516
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/AS1A07_049T01_9000003408_23089cztM0_level2.evt modeM0/AS1A07_049T01_9000003408_23089cztM0_level2_quad_clean.evt
Size (bytes)771,969,60062,735,040
Size736.2 MB 59.8 MB
Events in quadrant A10,973,943224,141
Events in quadrant B3,400,644422,083
Events in quadrant C4,239,370399,811
Events in quadrant D4,322,246395,237

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0369033
B0140072
C0166792
D0170582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6557314647.979259%
B65571181.799603%
C65572724.148239%
D65573204.880281%

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 7642 6557 2741 2741 35.87% 41.80%
B 7642 6558 15 15 0.20% 0.23%
C 7642 6557 62 62 0.81% 0.95%
D 7642 6557 186 186 2.43% 2.84%

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 6 16 8599608 70715.79 612 602 121.6
A 2 79 16451 130.34 612 602 121.6
A 13 254 7133 53.71 612 602 121.6
B 15 36 39871 245.51 844 822 159.0
B 12 111 19540 117.68 844 822 159.0
B 11 111 17311 103.67 844 822 159.0
C 10 187 566344 3020.68 806 814 187.2
C 0 10 341428 1819.33 806 814 187.2
C 14 238 127317 675.69 806 814 187.2
D 1 52 728292 3717.78 810 788 195.7
D 13 172 487688 2488.22 810 788 195.7
D 1 239 43339 217.45 810 788 195.7

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