ASTROSAT CZTI

Data Quality Report

Orbit 40282

Creation date: 2024-06-27T22:14:30.541143
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/AS1A12_056T02_9000005538_40282cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40282cztM0_level2_quad_clean.evt
Size (bytes)1,691,055,360418,668,480
Size1.6 GB 399.3 MB
Events in quadrant A14,174,0992,825,820
Events in quadrant B12,208,2492,910,353
Events in quadrant C12,999,5362,813,611
Events in quadrant D21,249,3322,377,337

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0571427
B0530976
C0541106
D0805326

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870
B0870
C0870
D0870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05200
B05200
C05200
D05200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A254252380.936087%
B254251240.487709%
C254251060.416912%
D2542524609.675516%

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 34085 25431 160 160 0.47% 0.63%
B 34085 25431 58 58 0.17% 0.23%
C 34085 25431 80 80 0.23% 0.31%
D 34085 25430 2146 2146 6.30% 8.44%

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 10 83 1991353 3435.65 2849 2795 578.8
A 13 248 999818 1722.57 2849 2795 578.8
A 13 6 51225 83.67 2849 2795 578.8
B 0 245 391780 718.26 2837 2755 541.6
B 5 255 252007 460.2 2837 2755 541.6
B 4 171 176325 320.46 2837 2755 541.6
C 15 214 1062774 1632.7 2790 2810 649.2
C 14 254 945690 1452.35 2790 2810 649.2
C 0 10 39279 56.17 2790 2810 649.2
D 12 227 3484078 5324.88 2678 2601 653.8
D 2 250 3137352 4794.56 2678 2601 653.8
D 12 218 1510948 2307.0 2678 2601 653.8

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