ASTROSAT CZTI

Data Quality Report

Orbit 00990

Creation date: 2024-06-27T14:05:48.335166
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/AS1P01_998T01_9000000188_00990cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00990cztM0_level2_quad_clean.evt
Size (bytes)1,597,204,800108,293,760
Size1.5 GB 103.3 MB
Events in quadrant A9,093,755749,901
Events in quadrant B9,911,865750,036
Events in quadrant C9,364,010739,650
Events in quadrant D19,493,501501,504

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324280
B0348650
C0332490
D0640120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A771690.116641%
B7716380.492483%
C7720110.142487%
D7719404252.364296%

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 8187 7722 261 261 3.19% 3.38%
B 8186 7723 472 472 5.77% 6.11%
C 8187 7724 310 310 3.79% 4.01%
D 8188 7723 5407 5407 66.04% 70.01%

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 0 253 57768 98.08 2353 2366 564.9
A 11 79 10697 14.75 2353 2366 564.9
A 3 111 7479 9.05 2353 2366 564.9
B 8 234 117946 196.81 2492 2498 586.6
B 7 221 102367 170.26 2492 2498 586.6
B 15 22 80898 133.66 2492 2498 586.6
C 15 241 359160 559.5 2287 2370 637.7
C 3 111 32818 47.75 2287 2370 637.7
C 3 79 28416 40.84 2287 2370 637.7
D 12 188 12892260 25139.66 1655 1710 512.8
D 1 4 239308 463.37 1655 1710 512.8
D 13 85 44845 84.12 1655 1710 512.8

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