ASTROSAT CZTI

Data Quality Report

Orbit 22456

Creation date: 2024-06-27T18:41:34.443582
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/AS1T03_149T08_9000003334_22456cztM0_level2.evt modeM0/AS1T03_149T08_9000003334_22456cztM0_level2_quad_clean.evt
Size (bytes)253,563,84036,259,200
Size241.8 MB 34.6 MB
Events in quadrant A1,611,337213,036
Events in quadrant B2,433,961211,722
Events in quadrant C1,644,833208,451
Events in quadrant D1,738,003204,791

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073540
B096240
C073590
D077890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A366930.081766%
B36701865.068120%
C3670130.354223%
D3670230.626703%

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 3669 3669 0 0 0.00% 0.00%
B 3670 3670 140 140 3.81% 3.81%
C 3670 3670 0 0 0.00% 0.00%
D 3670 3670 18 18 0.49% 0.49%

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 13 254 4453 47.37 417 405 85.5
A 3 137 3651 37.99 417 405 85.5
A 0 226 3580 37.16 417 405 85.5
B 10 245 832739 10506.19 406 395 79.2
B 12 111 9371 113.3 406 395 79.2
B 11 111 8454 101.72 406 395 79.2
C 14 238 63532 653.49 404 405 96.6
C 10 22 5327 50.95 404 405 96.6
C 13 61 2771 24.49 404 405 96.6
D 13 172 107869 1058.36 412 399 101.5
D 7 223 36019 350.78 412 399 101.5
D 9 85 27228 264.21 412 399 101.5

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