ASTROSAT CZTI

Data Quality Report

Orbit 45915

Creation date: 2024-06-27T23:17:39.899409
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/AS1A13_071T03_9000006142_45915cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45915cztM0_level2_quad_clean.evt
Size (bytes)843,799,680118,794,240
Size804.7 MB 113.3 MB
Events in quadrant A6,958,401799,932
Events in quadrant B7,974,652756,578
Events in quadrant C4,111,181823,755
Events in quadrant D11,576,652663,071

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253620
B0291290
C0179981
D0399380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79583384.247298%
B7959119915.064707%
C79581481.859764%
D7958134516.901231%

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 7958 7958 38 38 0.48% 0.48%
B 7958 7958 764 764 9.60% 9.60%
C 7958 7958 90 90 1.13% 1.13%
D 7958 7958 1029 1029 12.93% 12.93%

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 3297618 17560.51 897 875 187.7
A 0 247 111725 590.45 897 875 187.7
A 14 235 44908 234.54 897 875 187.7
B 3 112 4371687 25143.5 859 830 173.8
B 0 186 49176 278.11 859 830 173.8
B 4 158 29528 165.09 859 830 173.8
C 14 254 568334 2738.84 881 887 207.2
C 5 250 60294 286.73 881 887 207.2
C 12 249 27321 127.59 881 887 207.2
D 11 241 5723516 26746.34 840 814 214.0
D 1 52 1707892 7978.41 840 814 214.0
D 13 249 251293 1170.67 840 814 214.0

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