ASTROSAT CZTI

Data Quality Report

Orbit 36842

Creation date: 2024-06-27T21:32:16.170514
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/AS1A11_075T01_9000005244_36842cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36842cztM0_level2_quad_clean.evt
Size (bytes)369,002,88066,067,200
Size351.9 MB 63.0 MB
Events in quadrant A1,692,882453,136
Events in quadrant B5,265,202393,957
Events in quadrant C1,999,262458,715
Events in quadrant D1,971,620438,448

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08412
B08311
C08414
D08412

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087581155
B0227464732
C095151226
D0101131584

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272
B0261
C0262
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A363550.137552%
B3557122534.439134%
C36331213.330581%
D3634280.770501%

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 7284 3682 0 0 0.00% 0.00%
B 7284 3580 1201 1201 16.49% 33.55%
C 7284 3688 99 99 1.36% 2.68%
D 7284 3681 23 23 0.32% 0.62%

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 181253 2284.69 386 379 79.2
A 13 6 6674 79.51 386 379 79.2
A 9 143 6621 78.85 386 379 79.2
B 12 1 3258071 48772.11 348 340 66.8
B 5 172 328545 4913.62 348 340 66.8
B 4 232 140871 2103.92 348 340 66.8
C 0 10 341679 3893.51 376 378 87.7
C 15 214 165894 1888.18 376 378 87.7
C 14 254 17112 190.9 376 378 87.7
D 1 20 262684 2899.81 372 363 90.5
D 2 250 114857 1265.67 372 363 90.5
D 13 249 77475 852.43 372 363 90.5

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