ASTROSAT CZTI

Data Quality Report

Orbit 47000

Creation date: 2024-06-27T23:30:33.978111
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/AS1C09_006T01_9000006294_47000cztM0_level2.fits modeM0/AS1C09_006T01_9000006294_47000cztM0_level2_quad_clean.evt
Size (bytes)895,072,32096,606,720
Size853.6 MB 92.1 MB
Events in quadrant A6,961,156758,707
Events in quadrant B14,789,393286,587
Events in quadrant C4,105,341754,984
Events in quadrant D6,716,876620,149

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255721
B0489813
C0173891
D0249281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72412924.032592%
B7240497068.646409%
C72402233.080110%
D7241104314.404088%

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 7501 7242 5 5 0.07% 0.07%
B 7500 7241 4278 4278 57.04% 59.08%
C 7500 7241 182 182 2.43% 2.51%
D 7501 7242 866 866 11.55% 11.96%

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 3626329 21082.43 820 800 172.0
A 9 191 117679 679.65 820 800 172.0
A 0 243 21077 117.91 820 800 172.0
B 3 112 12538924 112795.11 552 536 111.2
B 0 198 21098 184.98 552 536 111.2
B 12 111 14061 121.67 552 536 111.2
C 14 254 742610 3845.63 808 813 192.9
C 3 233 128003 659.38 808 813 192.9
C 0 207 44707 227.56 808 813 192.9
D 13 249 2312145 11848.64 768 743 195.1
D 1 52 1221157 6256.05 768 743 195.1
D 12 218 81894 415.99 768 743 195.1

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