ASTROSAT CZTI

Data Quality Report

Orbit 48071

Creation date: 2024-08-20T11:46:45.919156
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_073T04_9000006396_48071cztM0_level2.fits modeM0/AS1A13_073T04_9000006396_48071cztM0_level2_quad_clean.evt
Size (bytes)324,671,04061,758,720
Size309.6 MB 58.9 MB
Events in quadrant A6,322,024506,799
Events in quadrant B794,30129,396
Events in quadrant C2,066,330520,926
Events in quadrant D2,458,336475,035

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219813
B049961
C098221
D0109461

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A477283817.560771%
B47724772100.000000%
C4772140.293378%
D4772621.299246%

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 5882 4773 684 684 11.63% 14.33%
B 5881 4771 0 0 0.00% 0.00%
C 5882 4773 0 0 0.00% 0.00%
D 5882 4773 49 49 0.83% 1.03%

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 2571760 24632.51 498 490 104.4
A 0 31 1808603 17321.54 498 490 104.4
A 13 254 8880 80.38 498 490 104.4
B 2 177 662092 76766.15 32 31 8.6
B 5 32 1530 173.81 32 31 8.6
B 0 200 940 105.4 32 31 8.6
C 3 233 8420 63.88 522 525 123.6
C 14 254 8061 60.98 522 525 123.6
C 12 2 5694 41.83 522 525 123.6
D 2 249 193034 1479.3 517 501 130.2
D 11 224 123930 948.35 517 501 130.2
D 10 204 54921 418.13 517 501 130.2

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